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  1. Employees

Språkvelger

Norsk

Merete Tangstad

Merete Tangstad

Professor
Department of Materials Science and Engineering

merete.tangstad@ntnu.no
+4797180255 Berg, E-307, Gløshaugen, Alfred Getz vei 2
About Publications Teaching Media

About

Ferroalloy-, silicon- and solar grade silicon- production

Merete Tangstad was educated at NTH in 1989 and was also awarded her PhD at this institution. She worked in Elkem and Eramet in the period of 1990-2004 with production of ferromanganese alloys. Since 2004 she has been a professor at NTNU and her main fields are ferralloy production, silicon production and solar grade silicon processes.

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2023

  • Davies, Emlyn John; Tangstad, Merete; Schanche, Trygve Lindahl; du Preez, Preez. (2023) Pre-reduction of United Manganese of Kalahari Ore in CO/CO<inf>2</inf>, H<inf>2</inf>/H<inf>2</inf>O, and H<inf>2</inf> Atmospheres. Metallurgical and Materials Transactions B.
    Academic article
  • Folstad, Marit Buhaug; Yu, Han; Wang, Haijuan; Tangstad, Merete. (2023) Disintegration of Six Different Quartz Types during Heating to 1600 °C. Minerals. volum 13 (2).
    Academic article

2022

  • Bublik, Sergey; Tangstad, Merete; Einarsrud, Kristian Etienne. (2022) Interfacial Behaviour in Ferroalloys: The Influence of FeMn Slag Composition. Metallurgical and Materials Transactions B. volum 53B (5).
    Academic article
  • da Luz Pascoal, Aline; Aristides Victor Rossoni, Hygor; Kaffash, Hamideh; Tangstad, Merete; Bicalho Henriques, Andréia. (2022) Study of the Physical Behaviour and the Carbothermal Reduction of Self-Reducing Briquettes Developed with Iron Ore Fines, Charcoal and Silica Fume Residues. Sustainability. volum 14 (17).
    Academic article
  • Davies, Jamey; Paktunc, Dogan; Ramos-Hernandez, José Juan; Tangstad, Merete; Ringdalen, Eli; Beukes, Johan P.; Bessarabov, Dmitri G.; Du Preez, Stephanus P.. (2022) The use of hydrogen as a potential reductant in the chromite smelting industry. Minerals. volum 12 (5).
    Academic article
  • Davies, Jamey; Tangstad, Merete; Ringdalen, Eli; Beukes, Johan Paul; Bessarabov, Dmitri; du Preez, Stephanus Petrus. (2022) The Effect of Pre-Oxidation on the Reducibility of Chromite Using Hydrogen: A Preliminary Study. Minerals. volum 12 (7).
    Academic article
  • Goso, Xolisa; Petersen, Jochen; Tangstad, Merete; Safarian, Jafar. (2022) Beneficiation of fluxed titaniferous slag to a marketable titania product using the modified upgraded slag process. Mineral Processing and Extractive Metallurgy: Transactions of the Institute of Mining and Metallurgy. volum 131 (3).
    Academic article
  • Haghdani, Shokouh; Tangstad, Merete; Einarsrud, Kristian Etienne. (2022) A Raman-Structure Model for the Viscosity of SiO2- CaO-Al2O3 System. Metallurgical and Materials Transactions B. volum 53B.
    Academic article
  • Hoover, Haley; Andersen, Vegar; Sævarsdottir, Gudrun; Tangstad, Merete. (2022) Excavation of 160kW Pilot Scale Si furnace. Aspects in Mining & Mineral Science (AMMS). volum 9 (2).
    Academic article
  • Hoover, Haley; Sævarsdottir, Gudrun; Tangstad, Merete. (2022) Electrical Resistivity of Transformed Carbon Materials in the Silicon Furnace. Furnace tapping 2022.
    Academic chapter/article/Conference paper
  • Jiao, Jian Meng; Safarian, Jafar; Tangstad, Merete. (2022) The Use of Fe-26Si-9B Alloy as Phase Change Material in Si<inf>3</inf>N<inf>4</inf> Container. Crystals. volum 12 (3).
    Academic article
  • Jusnes, Karin Fjeldstad; Ringdalen, Eli; Tangstad, Merete. (2022) The effects of cristobalite formation on disintegration of quartz. Materials at High Temperature.
    Academic article
  • Kaffash, Hamideh; Tangstad, Merete. (2022) CO2 Gasification of Densified Biomass: The Influence of K on Reaction Rate. JOM. volum 74 (5).
    Academic article
  • Larssen, Trine Asklund; Tangstad, Merete. (2022) Effect of Moisture, Hydrogen, and Water–Gas Shift Reaction on the Prereduction Behavior of Comilog and Nchwaning Manganese Ores. Metallurgical and Materials Transactions B. volum 53.
    Academic article
  • Mukono, Tichaona; Reiersen, Henrik Stensdal; Schanche, Trygve Lindahl; Wallin, Maria; Tangstad, Merete. (2022) Prereduction Behavior of Manganese Ores With Solid Carbon and in CO/CO<inf>2</inf> Gas Atmosphere. Metallurgical and Materials Transactions B. volum 53B (5).
    Academic article
  • Mukono, Tichaona; Wallin, Maria; Tangstad, Merete. (2022) Phase Distribution During Slag Formation in Mn Ferroalloy Production. Metallurgical and Materials Transactions B. volum 53B.
    Academic article
  • Mukono, Tichaona; Wallin, Maria; Tangstad, Merete. (2022) Slag Reduction and Viscosities Interaction in Ferromanganese Process. The Minerals, Metals & Materials Series.
    Academic article
  • Olsen, Jan Erik; Ksiazek, Michal Tomasz; Tangstad, Merete. (2022) CFD Study on Continuous Tapping of Silicon. The Minerals, Metals & Materials Series.
    Academic article
  • Surup, Gerrit Ralf; Kaffash, Hamideh; Ma, Yan; Trubetskaya, Anna; Pettersen, Johan Berg; Tangstad, Merete. (2022) Life Cycle Based Climate Emissions of Charcoal Conditioning Routes for the Use in the Ferro-Alloy Production. Energies. volum 15 (11).
    Academic article
  • Tangstad, Merete; Olsen, Jan Erik; Ringdalen, Eli; Ksiazek, Michal Tomasz; Reynolds, Quinn; Steenkamp, Joalet. (2022) Conceptual Tapping Model of Mn-Ferroalloy Furnaces. JOM. volum 74 (11).
    Academic article

2021

  • Aarnæs, Trygve Storm; Tangstad, Merete; Ringdalen, Eli. (2021) SiC formation and SiO reactivity of methane at high temperatures. Materials Chemistry and Physics. volum 276.
    Academic article
  • Bao, Sarina; Tangstad, Merete; Tang, Kai; Einarsrud, Kristian Etienne; Syvertsen, Martin; Onsøien, Morten Ingar; Kudyba, Artur; Bublik, Sergey. (2021) Investigation of Two Immiscible Liquids Wetting at Elevated Temperature: Interaction Between Liquid FeMn Alloy and Liquid Slag. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Bublik, Sergey; Bao, Sarina; Tangstad, Merete; Einarsrud, Kristian Etienne. (2021) Interfacial Behaviour in Ferroalloys: The Influence of Sulfur in FeMn and SiMn Systems. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Canaguier, Vincent Yves; Tangstad, Merete. (2021) In situ observation of the carbothermic reduction and foaming of slags in silicomanganese production. Processes. volum 9 (11).
    Academic article
  • Folstad, Marit Buhaug; Ringdalen, Eli; Tveit, Halvard; Tangstad, Merete. (2021) Effect of different SiO2 polymorphs on the reaction between SiO2 and SiC in Si production. Metallurgical and Materials Transactions B. volum 52B (2).
    Academic article
  • Glastonbury, Ralph; Beukes, Paul; van Zyl, Pieter Gideon; Tangstad, Merete; Ringdalen, Eli; Dall, Douglas; Steenkamp, Joalet Dalene; Mushwana, Masana. (2021) Characterisation of a real-world Søderberg electrode. Metals. volum 11 (5).
    Academic article
  • Goso, Xolisa; Petersen, Jochen; Tangstad, Merete; Safarian, Jafar. (2021) Beneficiation of fluxed titaniferous slag to a marketable titania product using the modified upgraded slag process. Mineral Processing and Extractive Metallurgy: Transactions of the Institute of Mining and Metallurgy.
    Academic article
  • He, Jiali; Jusnes, Karin Fjeldstad; Tangstad, Merete. (2021) Phase transformation in quartz at elevated temperatures. Aspects in Mining & Mineral Science (AMMS).
    Article
  • Jiao, Jianmeng; Tang, Kai; Safarian, Jafar; Grorud, Bettina; Sellevoll, Kathrine; Tangstad, Merete. (2021) High temperature interaction between Si–B alloys and Si3N4. Ceramics International. volum 47 (10).
    Academic article
  • Kaffash, Hamideh; Surup, Gerrit Ralf; Tangstad, Merete. (2021) Densification of Biocarbon and Its Effect on CO2 Reactivity. Processes. volum 9 (2).
    Academic article
  • Larssen, Trine Asklund; Senk, Dieter Georg; Tangstad, Merete. (2021) Reaction Rate Analysis of Manganese Ore Prereduction in CO-CO2 Atmosphere. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Larssen, Trine Asklund; Tangstad, Merete. (2021) Off-gas characteristics for varying conditions in the prereduction zone of a ferromanganese furnace – a basis for energy recovery. Social Science Research Network (SSRN).
    Academic article
  • Mukono, Tichaona; Gjøvik, Jonas Einan; Gaertner, Heiko; Wallin, Maria; Ringdalen, Eli; Tangstad, Merete. (2021) Extent of Ore Prereduction in Pilot-scale Production of High Carbon Ferromanganese. SSRN Electronic Journal.
    Academic article
  • Ramos, D.C.; Carneiro, A.C.O.; Tangstad, Merete; Pereira, B.L.C.; Saadieh, Raghed; Oliveira, A.C.; Vital, B.R.. (2021) Reactivity assessment of charcoal for use in silicon production. European Journal of Wood and Wood Products. volum 79 (3).
    Academic article
  • Schanche, Trygve Lindahl; Tangstad, Merete. (2021) Isothermal Reduction of Nchwaning Manganese Ore in CO/CO2/H2 Atmospheres. SSRN Electronic Journal.
    Academic article
  • Schanche, Trygve Lindahl; Tangstad, Merete. (2021) Prereduction of nchwaning ore in CO/CO<inf>2</inf>/H<inf>2</inf> gas mixtures. Minerals. volum 11 (10).
    Academic article
  • Sindland, Caroline; Tangstad, Merete. (2021) Production Rate of SiO Gas from Industrial Quartz and Silicon. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • SOLHAUG, Emma; Tangstad, Merete. (2021) Densified biocarbon and the effect of potassium. 2021.
    Report
  • Surup, Gerrit Ralf; Trubetskaya, Anna; Tangstad, Merete. (2021) Life cycle assessment of renewable reductants in the ferromanganese alloy production: A review. Processes. volum 9 (1).
    Academic literature review
  • Tangstad, Merete; Bublik, Sergey; Haghdani, Shokouh; Einarsrud, Kristian Etienne; Tang, Kai. (2021) Slag Properties in the Primary Production Process of Mn-Ferroalloys. Metallurgical and Materials Transactions B. volum 52B.
    Academic literature review
  • Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Sævarsdottir, Gudrun. (2021) The Effect of Electrode Movements on Electrical Characteristics of a Submerged Arc Furnace. JOM. volum 73 (10).
    Academic article

2020

  • Aarnæs, Trygve Storm; Ringdalen, Eli; Tangstad, Merete. (2020) Silicon carbide formation from methane and silicon monoxide. Scientific Reports. volum 10 (1).
    Academic article
  • Broggi, Andrea; Ringdalen, Eli; Tangstad, Merete. (2020) Characterization, Thermodynamics and Mechanism of Formation of SiC-SiOx Core–Shell Nanowires. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Broggi, Andrea; Ringdalen, Eli; Tangstad, Merete. (2020) Evolution of SiOx shell layers on SiC-SiOx core-shell nanowires. Materials Science Forum. volum 1004.
    Academic article
  • Canaguier, Vincent Yves; Tangstad, Merete. (2020) Kinetics of Slag Reduction in Silicomanganese Production. Metallurgical and Materials Transactions B. volum 51B.
    Academic article
  • Folstad, Marit Buhaug; Ksiazek, Michal Tomasz; Tangstad, Merete. (2020) Slag in the Tapping Area in a Si Furnace. Silicon for the Chemical and Solar Industry XV.
    Academic chapter/article/Conference paper
  • Jayakumari, Sethulakshmy; Tangstad, Merete. (2020) Transformation of β-SiC from Charcoal, Coal, and Petroleum Coke to α-SiC at Higher Temperatures. Metallurgical and Materials Transactions B. volum 51B.
    Academic article
  • Jayakumari, Sethulakshmy; Vullum, Per Erik; Van Helvoort, Antonius; Tangstad, Merete. (2020) SiC crystalline micro bullets on bio-carbon based charcoal substrate. Journal of Crystal Growth. volum 545.
    Academic article
  • Jesus, Leandro Gustavo de Mendes; Tangstad, Merete. (2020) CO Reactivity of Manganese Lumps Versus Briquettes. ISIJ International. volum 60 (10).
    Academic article
  • Jiao, Jian Meng; Grorud, Bettina; Safarian, Jafar; Tangstad, Merete. (2020) The Use of Si-B Alloys in Thermal Energy Storage System. Journal of Physics: Conference Series (JPCS). volum 1527 (1).
    Academic article
  • Jusnes, Karin Fjeldstad; Ringdalen, Eli; Tangstad, Merete. (2020) Phase Transformations in Quartz used in Silicon and Ferrosilicon Production. Aspects in Mining & Mineral Science (AMMS). volum 5 (5).
    Academic article
  • Jusnes, Karin Fjeldstad; Tangstad, Merete; Ringdalen, Eli. (2020) Phase transformations in quartz used in silicon and ferrosilicon. Aspects in Mining & Mineral Science (AMMS). volum 5 (5).
    Academic article
  • Kaffash, Hamideh; Tangstad, Merete. (2020) Factors influencing dissolution of carbonaceous materials in liquid Fe– Mn. Journal of Iron and Steel Research International. volum 27.
    Academic article
  • Kaffash, Hamideh; Xing, Xing; Tangstad, Merete. (2020) Wettability of cokes by Fe-Mn melt. Journal of Dispersion Science and Technology.
    Academic article
  • Larssen, Trine Asklund; Senk, Dieter Georg; Tangstad, Merete. (2020) Reduction of Manganese Ores in CO-CO2 Atmospheres. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Li, Xiang; Tang, Kai; Tangstad, Merete. (2020) Reduction and Dissolution Behaviour of Manganese Slag in the Ferromanganese Process. Minerals. volum 10(2) (97).
    Academic article
  • Ngoy, Didier; Sukhomlinov, Dmitry; Tangstad, Merete. (2020) Pre-reduction Behaviour of Manganese Ores in H2 and CO Containing Gases. ISIJ International. volum 60 (11).
    Academic article
  • Surup, Gerrit Ralf; Pedersen, Tommy Andre; Chaldien, Annah; Beukes, Johan Paul; Tangstad, Merete. (2020) Electrical Resistivity of Carbonaceous Bed Material at High Temperature. Processes. volum 8 (8).
    Academic article
  • Surup, Gerrit Ralf; Trubetskaya, Anna; Tangstad, Merete. (2020) Charcoal as an Alternative Reductant in Ferroalloy Production: A Review. Processes. volum 8.
    Academic literature review
  • Andresen, Birger; Rong, Harry Morten; Tangstad, Merete; Tveit, Halvard; Page, Ingrid Gamst. (2020) Silicon for the Chemical and Solar Industry XV. 2020. ISBN 978-82-997357-9-7.
    Academic anthology/Conference proceedings
  • Tangstad, Merete. (2020) Silicon for the Chemical and Solar Industry XV. 2020. ISBN 978-82-997357-9-7.
    Academic anthology/Conference proceedings
  • Tangstad, Merete. (2020) The Norwegian Aluminium Production. NTNU. 2020.
    Multimedia product
  • Tesfahunegn, Yonatan; Magnusson, Tordur; Tangstad, Merete; Sævarsdottir, Gudrun A.. (2020) Comparative study of AC and DC solvers based on current and power distributions in a submerged arc furnace. Metallurgical and Materials Transactions B. volum 51 (2).
    Academic article

2019

  • Aarnæs, Trygve Storm; Tangstad, Merete. (2019) Effect of H2 on SiO and SiC formation. Építőanyag - Journal of Silicate Based and Composite Materials. volum 71 (6).
    Academic article
  • Broggi, Andrea; Tangstad, Merete; Ringdalen, Eli. (2019) Characterization of a Si-SiO2 Mixture Generated from SiO(g) and CO(g). Metallurgical and Materials Transactions B. volum 50 (6).
    Academic article
  • Bublik, Sergey; Bao, Sarina; Tangstad, Merete; Einarsrud, Kristian Etienne. (2019) Slag-metal interactions in the FeMn tapping process: Interfacial properties and wetting. Proceedings of the Liquid Metal Processing & Casting Conference 2019.
    Academic chapter/article/Conference paper
  • Heimo, Juhani; Jokilaakso, Ari; Kekkonen, Marko; Tangstad, Merete; Støre, Anne. (2019) Thermal conductivity of titanium slags. Metallurgical Research and Technology. volum 116 (6).
    Academic article
  • Jiao, Jianmeng; Grorud, Bettina; Safarian, Jafar; Tangstad, Merete. (2019) WETTABILITY OF MOLTEN Fe-Si-B ALLOY ON GRAPHITE, Al2O3, AND h-BN SUBSTRATES. 2019. ISBN 0-87339-771-1.
    Academic anthology/Conference proceedings
  • Jiao, Jianmeng; Grorud, Bettina; Sindland, Caroline; Safarian, Jafar; Tang, Kai; Sellevoll, Kathrine; Tangstad, Merete. (2019) The Use of Eutectic Fe-Si-B Alloy as a Phase Change Material in Thermal Energy Storage Systems. Materials. volum 12 (14).
    Academic article
  • Jiao, Jianmeng; Safarian, Jafar; Grorud, Bettina; Tangstad, Merete. (2019) High Temperature Interaction of Si-B Alloys with Graphite Crucible in Thermal Energy Storage Systems. Materials. volum 13 (29).
    Academic article
  • Kalenga, M; Tangstad, Merete; Pan, X. (2019) Phase Relations in Ferromanganese Production During Prereduction: South African Ores. Metallurgist (New York). volum 62 (11-12).
    Academic article
  • Kim, Pyunghwa; Larssen, Trine Asklund; Tangstad, Merete. (2019) Reduction rates of MnO and SiO2 in SiMn slags between 1500 and 1650°C. The Southern African Journal of Mining and Metallurgy. volum 119 (5).
    Academic article
  • Larssen, Trine Asklund; Kero, Ida; Tangstad, Merete. (2019) Energy Distribution in HC FeMn and SiMn - Energy vs Exergy Analyses. The Southern African Journal of Mining and Metallurgy. volum 119 (12).
    Academic article
  • Myklebust, Håkon Aleksander; Tangstad, Merete. (2019) Simulation of Electrical Current Paths in a MnFerroalloy Furnace. Aspects in Mining & Mineral Science (AMMS). volum 4 (1).
    Academic article
  • Ramos, Diego Correa; Carneiro, Angélica de Cássia Oliveira; Tangstad, Merete; Saadieh, Raghed; Pereira, Bárbara Luísa Corradi. (2019) Quality of Wood and Charcoal from Eucalyptus Clones for Metallurgical Use. Floresta e Ambiente. volum 26 (2).
    Academic article
  • Tangstad, Merete; Safarian, Jafar; Bao, Sarina; Ringdalen, Eli; Valderhaug, Aasgeir. (2019) Reaction Rates of 2SiO2+SiC=3SiO+CO in Pellets at Elevated Temperatures. Aspects in Mining & Mineral Science (AMMS). volum 3 (2).
    Academic article
  • Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Saevarsdottir, Gudrun. (2019) Dynamic Current and Power Distributions in a Submerged Arc Furnace. The Minerals, Metals & Materials Series.
    Academic article

2018

  • Andresen, Birger; Nygaard, Lars; Rong, Harry Morten; Tangstad, Merete; Tveit, Halvard; Page, Ingrid Gamst. (2018) Silicon for the Chemical and Solar Industry XIV. Norges teknisk-naturvitenskapelige universitet. 2018. ISBN 9788269291926.
    Academic anthology/Conference proceedings
  • Broggi, Andrea; Tangstad, Merete. (2018) Small scale experiments simulating condensation of SiO and CO in silicon furnace. Silicon for the Chemical and Solar Industry XIV.
    Academic chapter/article/Conference paper
  • Datas, Alejandro; Cristobal, Ana Belen; del Cañizo, Carlos; Antolin, Elisa; Beaughon, Michel; Nikolopoulos, Nikolaos; Nikolopoulos, Aristeidis; Zeneli, Myrto; Sobczak, Natalia; Polkowski, Wojciech; Tangstad, Merete; Safarian, Jafar; Trucchi, Daniele M; Bellucci, Alessandro; Girolami, Marco; Marx, Roman; Bestenlehner, Dominik; Lang, Stephan; Vitulano, Aniello; Sabbatella, Gianfranco; Marti, Antonio. (2018) AMADEUS: Next generation materials and solid state devices for ultra high temperature energy storage and conversion. AIP Conference Proceedings. volum 2033.
    Academic article
  • du Preez, S.P; Beukes, Paul; van Zyl, Peter; Tangstad, Merete; Tiedt, LR. (2018) Silicon Carbide Formation Enhanced by In-Situ-Formed Silicon Nitride: An Approach to Capture Thermal Energy of CO-Rich Off-Gas Combustion. Metallurgical and Materials Transactions B. volum 49.
    Academic article
  • Jakobsson, Lars Klemet; Tangstad, Merete. (2018) Thermodynamics of Boron Removal from Silicon Using CaO-MgO-Al2O3-SiO2 Slags. Metallurgical and Materials Transactions B. volum 49 (4).
    Academic article
  • Jayakumari, Sethulakshmy; Tangstad, Merete. (2018) Formation of elemental silicon in β-SiC par. Silicon for the Chemical and Solar Industry XIV.
    Academic chapter/article/Conference paper
  • Jusnes, Karin Fjeldstad; Tangstad, Merete; Ringdalen, Eli. (2018) Cracks, Disintegration and Phases Transformations in Quartz. Silicon for the Chemical and Solar Industry XIV.
    Academic chapter/article/Conference paper
  • Jusnes, Karin Fjeldstad; Tangstad, Merete; Ringdalen, Eli. (2018) Phase Transformations from Quartz to Cristobalite. Extraction 2018- Proceedings of the First Global Conference on Extractive Metallurgy.
    Academic chapter/article/Conference paper
  • Kim, Pyunghwa; Tangstad, Merete. (2018) Kinetic Investigations of SiMn Slags From Different Mn Sources. Metallurgical and Materials Transactions B. volum 49 (3).
    Academic article
  • Larssen, Trine Asklund; Tangstad, Merete; Kero, Ida. (2018) Gaseous reduction of Mn ores in CO-CO2 atmosphere. Extraction 2018- Proceedings of the First Global Conference on Extractive Metallurgy.
    Academic chapter/article/Conference paper
  • Li, Fei; Tangstad, Merete. (2018) Kinetic modeling of the reaction rate for quartz and carbon pellet. Metallurgical and Materials Transactions B. volum 49 (2).
    Academic article
  • Li, Fei; Tangstad, Merete; Ringdalen, Eli. (2018) Carbothermal reduction of quartz and carbon pellets at elevated temperatures. Metallurgical and Materials Transactions B. volum 49 (3).
    Academic article
  • Li, Xiang; Tangstad, Merete. (2018) The Influence of Sulfur Content on the Carbothermal Reduction of SiMn Slag. Metallurgical and Materials Transactions B. volum 50 (1).
    Academic article
  • Mwana Bute Ngoy, D; Kalenga wa Kalenga, M; Tangstad, Merete. (2018) Effect of Charge Basicity of Two Compositions on MnO Reduction During Smelting Ferromanganese. Metallurgist (New York). volum 62 (7-8).
    Academic article
  • Polkowski, Wojciech; Sobczak, Natalia; Tangstad, Merete; Safarian, Jafar; Jiao, Jian Meng; Grorud, Bettina. (2018) Silicon and silicon-boron alloys as phase change materials in thermal energy storage units. Silicon for the Chemical and Solar Industry XIV.
    Academic chapter/article/Conference paper
  • Saadieh, Raghed; Tangstad, Merete; Wegge, Harald. (2018) Cavity Formation in Silicon Furnaces. Silicon for the Chemical and Solar Industry XIV Proceedings.
    Article
  • Saadieh, Raghed; Tangstad, Merete; Wegge, Harald. (2018) Cavity formation in silicon furnaces. Silicon for the Chemical and Solar Industry XIV.
    Academic chapter/article/Conference paper
  • Saadieh, Raghed; Tangstad, Merete; Wegge, Harald. (2018) Simulation of the Ferrosilicon Process Using Small-Scale Laboratory Furnace. International Ferroalloys Congress INFACON : Proceedings.
    Article
  • Tangstad, Merete; Beukes, Paul; Steenkamp, Joalet Dalene; Ringdalen, Eli. (2018) Chapter 14: Coal-based reducing agents in ferroalloys and silicon production. New Trends in Coal Conversion Combustion, Gasification, Emissions, and Coking,.
    Chapter
  • Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Saevarsdottir, Gudrun. (2018) Dynamic Current Distribution in the Electrodes of Submerged Arc Furnace Using Scalar and Vector Potentials. Lecture Notes in Computer Science (LNCS). volum 10861 LNCS.
    Academic article
  • Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Saevarsdottir, Gudrun. (2018) Effect of carbide configuration on the current distribution in submerged arc furnaces for silicon production?A modelling approach. The Minerals, Metals & Materials Series. volum Part F3.
    Academic article
  • Tesfahunegn, Yonatan; Magnusson, Tordur; Tangstad, Merete; Saevarsdottir, Gudrun. (2018) Effect of electrode shape on the current distribution in submerged arc furnaces for silicon production - A modelling approach. Symposium series - Southern African Institute of Mining and Metallurgy. volum 118 (6).
    Academic article
  • Vadon, Mathieu; Sortland, Øyvind Sunde; Nuta, Ioana; Chatillon, Christian; Tangstad, Merete; Chichignoud, Guy; Delannoy, Yves. (2018) CFD Modeling of boron removal from liquid silicon with cold gases and plasma. Metallurgical and Materials Transactions B. volum 49 (3).
    Academic article
  • Vadon, Mathieu; Sortland, Øyvind Sunde; Tangstad, Merete; Chichignoud, Guy; Delannoy, Yves. (2018) Passivation Threshold for the Oxidation of Liquid Silicon and Thermodynamic Non-equilibrium in the Gas Phase. Metallurgical and Materials Transactions B. volum 49 (6).
    Academic article
  • van Staden, Yolindi; Beukes, Johan Paul; van Zyl, Pieter Gideon; Ringdalen, Eli; Tangstad, Merete; Kleynhans, Ernst L.J.; Bunt, John Reginald. (2018) Damring formation during rotary kiln chromite pre-reduction: Effects of pulverized carbonaceous fuel selection and partial pellet melting. Metallurgical and Materials Transactions B. volum 49 (6).
    Academic article

2017

  • Hustad, Hanne Mette; Tangstad, Merete. (2017) The effect of FexOy on Al2O3 – CaO – SiO2 slag systems. 2017.
    Report
  • Kim, Pyunghwa; Larssen, Trine Asklund; Kawamoto, Ryosuke; Tangstad, Merete. (2017) Empirical Activation Energies of MnO and SiO2 Reduction in SiMn Slags Between 1500 and 1650 °C. The Minerals, Metals & Materials Series.
    Academic article
  • Letout, Sebastien Romain; Ratvik, Arne Petter; Tangstad, Merete; Johansen, Stein Tore; Olsen, Jan Erik. (2017) A multiscale numerical approach of the dripping slag in the coke bed zone of a pilot scale Si-Mn furnace. Progress in Applied CFD – CFD2017 Selected papers from 12th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries.
    Academic chapter/article/Conference paper
  • Li, Fei; Tangstad, Merete. (2017) Carbothermal Reduction of Quartz with Carbon from Natural Gas. Metallurgical and Materials Transactions B. volum 48 (2).
    Academic article
  • Polkowski, Wojciech; Sobczak, Natalia; Nowak, Rafal; Kudyba, Artur; Bruzda, Grzegorz; Polkowska, Adelajda; Homa, Marta; Turalska, Patrycja; Tangstad, Merete; Safarian, Jafar; Moosavi-Khoonsari, Elmira; Datas, Alejandro. (2017) Wetting Behavior and Reactivity of Molten Silicon with h-BN Substrate at Ultrahigh Temperatures up to 1750 °C. Journal of materials engineering and performance (Print). volum 27 (201).
    Academic article
  • Tangstad, Merete; Ringdalen, Eli; Manilla, Edmundo; Davila, Daniel. (2017) Pilot Scale Production of Manganese Ferroalloys Using Heat-Treated Mn-Nodules. JOM. volum 69 (2).
    Academic article

2016

  • Bao, Sarina; Syvertsen, Martin; Nordmark, Arne; Kvithyld, Anne; Engh, Thorvald Abel; Tangstad, Merete. (2016) Plant scale investigation of liquid aluminium filtration by Al2O3 and SiC ceramic foam filters. The Minerals, Metals & Materials Series.
    Academic article
  • Ksiazek, Michal; Tangstad, Merete; Ringdalen, Eli. (2016) Five furnaces five different sto. Silicon for the Chemical and Solar Industry XIII.
    Academic chapter/article/Conference paper
  • Li, Fei; Tangstad, Merete. (2016) Use of agglomerated raw materials in Si production. Silicon for the Chemical and Solar Industry XIII.
    Academic chapter/article/Conference paper
  • Nygård, Lars; Pachaly, Bernd; Rong, Harry Morten; Tangstad, Merete; Tveit, Halvard; Page, Ingrid Gamst. (2016) Silicon for the Chemical and Solar Industry XIII. Norges teknisk-naturvitenskapelige universitet. 2016. ISBN 9788269291919.
    Academic anthology/Conference proceedings
  • Ringdalen, Eli; Tangstad, Merete. (2016) Phase transformations in quartz and it's effect on furnace operation. Silicon for the Chemical and Solar Industry XIII.
    Academic chapter/article/Conference paper

2015

  • Jakobsson, Lars Klemet; Tangstad, Merete. (2015) Thermodynamic Activities and Distributions of Calcium and Magnesium Between Silicon and CaO-MgO-SiO2 Slags at 1873 K (1600 °C). Metallurgical and Materials Transactions B. volum 46 (2).
    Academic article
  • Li, Fei; Tangstad, Merete; Solheim, Ingeborg. (2015) Quartz and Carbon Black Pellets for Silicon Production. Proceeding of THE FOURTEENTH INTERNATIONAL FERROALLOYS CONGRESS - Energy efficiency and environmental friendliness are the future of the global Ferroalloy industry.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Tangstad, Merete; Brynjulfsen, Thomas. (2015) Melting Behaviour of Mn sources - effect on furnace performance. Proceeding of THE FOURTEENTH INTERNATIONAL FERROALLOYS CONGRESS - Energy efficiency and environmental friendliness are the future of the global Ferroalloy industry.
    Academic chapter/article/Conference paper
  • Steenkamp, JD; Pistorius, P Chris; Tangstad, Merete. (2015) Wear mechanisms of carbon-based refractory materials in SiMn tap-holes—part II: in situ observation of cemical reactions. Metallurgical and Materials Transactions B. volum 46 (2).
    Academic article
  • Steenkamp, JD; Pistorius, PC; Tangstad, Merete. (2015) Chemical wear analysis of a tap-hole on a SiMn production furnace. The Southern African Journal of Mining and Metallurgy. volum 115 (3).
    Academic article
  • Steenkamp, Joalet Dalene; Pistorius, Petrus Chris; Tangstad, Merete. (2015) Wear mechanisms of carbon-based refractory materials in silicomanganese tap holes—part I: equilibrium calculations and slag and refractory characterization. Metallurgical and Materials Transactions B. volum 46 (2).
    Academic article
  • Tangstad, Merete; Ringdalen, Eli; Ichihara, K. (2015) Pretreatment unit in ferromanganese production. Proceeding of THE FOURTEENTH INTERNATIONAL FERROALLOYS CONGRESS - Energy efficiency and environmental friendliness are the future of the global Ferroalloy industry.
    Academic chapter/article/Conference paper

2014

  • Dalaker, Halvor; Tangstad, Merete. (2014) The interactions of carbon and nitrogen in liquid silicon. High Temperature Materials and Processes. volum 33 (4).
    Academic article
  • Jakobsson, Lars Klemet; Tangstad, Merete. (2014) Distribution of Boron Between Silicon and CaO-MgO-Al2O3-SiO2 Slags. Metallurgical and Materials Transactions B. volum 45 (5).
    Academic article
  • Jakobsson, Lars Klemet; Tangstad, Merete. (2014) Erratum to: Distribution of boron between silicon and CaO-MgO-Al2O3-SiO2 slags. Metallurgical and Materials Transactions B.
    Errata
  • Kline, Jeffery; Tangstad, Merete; Tranell, Gabriella. (2014) A Raman Spectroscopic Study of the Structural Modifications Associated with the Addition of Calcium Oxide and Boron Oxide to Silica. Metallurgical and Materials Transactions B. volum 46 (1).
    Academic article
  • Ksiazek, Michal Tomasz; Tangstad, Merete; Dalaker, Halvor; Ringdalen, Eli. (2014) Reduction of SiO2 to SiC using natural gas. Metallurgical and Materials Transactions E. volum 1 (3).
    Academic article
  • Sortland, Øyvind Sunde; Tangstad, Merete. (2014) Boron Removal from Silicon Melts by H2O/H2 Gas Blowing: Mass Transfer in Gas and Melt. Metallurgical and Materials Transactions E. volum 1 (3).
    Academic article
  • Tang, Kai; Løvvik, Ole Martin; Safarian-Dastjerdi, Jafar; Ma, Xiang; Tangstad, Merete. (2014) Removal of Phosphorus in Metallurgical Silicon by Rare Earth Elements. Metallurgical and Materials Transactions E. volum 1 (3).
    Academic article
  • Tangstad, Merete; Brynjulfsen, Thomas; Ringdalen, Eli. (2014) Reduction of agglomerated manganese ores in a 150 kW pilot scale furnace. Celebrating the Megascale: Proceedings of the Extraction and Processing Division Symposium on Pyrometallurgy in Honor of David G.C. Robertson.
    Academic chapter/article/Conference paper
  • Tangstad, Merete; Ksiazek, Michal Tomasz; Andersen, Jan Erlend. (2014) Zones and materials in the Si furnace. Silicon for the Chemical and Solar Industry XII.
    Academic chapter/article/Conference paper
  • Turkova, Kira; Slizovskiy, Dmitry; Tangstad, Merete. (2014) Co reactivity and porosity of manganese materials. ISIJ International. volum 54 (6).
    Academic article
  • Øye, Harald Arnljot; Brekken, H.; Nygaard, Lars; Rong, Harry Morten; Tangstad, Merete; Tveit, Halvard. (2014) Silicon for the Chemical and Solar Industry XII. 2014. ISBN 978-82-997357-8-0.
    Academic anthology/Conference proceedings

2013

  • Bao, Sarina; Syvertsen, Martin; Nordmark, Arne; Kvithyld, Anne; Engh, Thorvald Abel; Tangstad, Merete. (2013) Plant Scale Investigation of Liquid Aluminium Filtration by Al2O3 and SiC Ceramic Foam Filters. Light Metals.
    Academic article
  • Ksiazek, Michal; Mánik, Tomás; Tangstad, Merete; Ringdalen, Eli. (2013) The thermal diffusivity of raw materials for ferromanganese production. INFACON XIII - THE THIRTEENTH INTERNATIONAL FERROALLOYSCONGRESS - Efficient Technologies in Ferroalloy Industry.
    Academic chapter/article/Conference paper
  • Ladam, Yves; Tangstad, Merete; Ravary, B. (2013) Energy mapping of industrial ferroalloy plants. INFACON XIII - THE THIRTEENTH INTERNATIONAL FERROALLOYSCONGRESS - Efficient Technologies in Ferroalloy Industry.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Tangstad, Merete. (2013) Study of SiMn production in Pilot Scale experiments – Comparing Carajas sinter and Assmang ore. INFACON XIII - THE THIRTEENTH INTERNATIONAL FERROALLOYSCONGRESS - Efficient Technologies in Ferroalloy Industry.
    Academic chapter/article/Conference paper
  • Safarian-Dastjerdi, Jafar; Tranell, Gabriella; Tangstad, Merete. (2013) Thermodynamic and Kinetic Behavior of B and Na Through the Contact of B-Doped Silicon with Na2O-SiO2 Slags. Metallurgical and Materials Transactions B. volum 44 (3).
    Academic article
  • Tangstad, Merete. (2013) Back to BASIC. International Innovation.
    Popular scientific article
  • Tangstad, Merete. (2013) Kobberprosessen i pepperkakeform. Arbeidets Rett.
    Popular scientific article

2012

  • Bao, Sarina; Engh, Thorvald Abel; Syvertsen, Martin; Kvithyld, Anne; Tangstad, Merete. (2012) Inclusion (particle) removal by interception and gravity in ceramic foam filters. Journal of Materials Science. volum 47 (23).
    Academic article
  • Bao, Sarina; Kvithyld, Anne; Tang, Kai; Engh, Thorvald Abel; Tangstad, Merete. (2012) WETTABILITY OF ALUMINIUM WITH ALUMINIUM CARBIDE (GRAPHITE) IN ALUMINIUM FILTRATION. Light Metals.
    Academic article
  • Bao, Sarina; Tang, Kai; Kvithyld, Anne; Engh, Thorvald Abel; Tangstad, Merete. (2012) Wetting of pure aluminium on graphite, SiC and Al2O3 in aluminium filtration. Transactions of Nonferrous Metals Society of China. volum 22 (8).
    Academic article
  • Kadkhodabeigi, Mehdi; Safarian-Dastjerdi, Jafar; Tveit, Halvard; Tangstad, Merete; Johansen, Stein Tore. (2012) Removal of SiC particles from solar grade silicon melts by imposition of high frequency magnetic field. Transactions of Nonferrous Metals Society of China. volum 22 (11).
    Academic article
  • Nordstrand, Erlend Fjøsne; Tangstad, Merete. (2012) Removal of boron from silicon by moist hydrogen gas. Metallurgical and Materials Transactions B. volum 43 (4).
    Academic article
  • Ringdalen, Eli; Tangstad, Merete. (2012) Reaction Mechanisms in Carbothermic Production of Silicon, Study of Selected Reactions. International Smelting Technology Symposium: Incorporating the 6th Advances in Sulfide Smelting Symposium.
    Academic chapter/article/Conference paper
  • Safarian, Jafar; Kolbeinsen, Leiv; Tangstad, Merete. (2012) Thermodynamic activities in silicon binary melts. Journal of Materials Science. volum 47 (14).
    Academic article
  • Safarian, Jafar; Tangstad, Merete. (2012) Kinetics and Mechanism of Phosphorus Removal from Silicon in Vacuum Induction Refining. High Temperature Materials and Processes. volum 31 (1).
    Academic article
  • Safarian, Jafar; Tangstad, Merete. (2012) Vacuum refining of molten silicon. Metallurgical and Materials Transactions B. volum 43 (6).
    Academic article
  • Safarian-Dastjerdi, Jafar; Tranell, Gabriella; Tangstad, Merete. (2012) Processes for upgrading metallurgical grade silicon to solar grade silicon. Energy Procedia. volum 20.
    Academic article
  • Tang, Kai; Andersson, Stefan; Nordstrand, Erlend Fjøsne; Tangstad, Merete. (2012) Removal of Boron in Silicon by H2-H2O Gas Mixtures. JOM. volum 64 (8).
    Academic article
  • Tang, Kai; Tangstad, Merete. (2012) A thermodynamic description of the Si-rich Si-Fe system. Acta Metallurgica Sinica (English Letters). volum 25 (4).
    Academic article
  • Øvrelid, Eivind Johannes; Tangstad, Merete; Tranell, Gabriella; Lohne, Otto; Ceccaroli, Bruno. (2012) New advances in metallurgical solar grade silicon based on recent Norwegian research activities. Physica Status Solidi. C, Current topics in solid state physics. volum 9 (10-11).
    Academic article

2011

  • Bao, Sarina; Kvithyld, Anne; Engh, Thorvald Abel; Tangstad, Merete. (2011) Wettability of Aluminium with SiC and Graphite in Aluminium Filtration. Light Metals 2011.
    Academic chapter/article/Conference paper
  • Bao, Sarina; Tang, Kai; Kvithyld, Anne; Tangstad, Merete; Engh, Thorvald Abel. (2011) Wettability of Aluminum on Alumina. Metallurgical and Materials Transactions B. volum 42 (6).
    Academic article
  • Ksiazek, Michal Tomasz; Tangstad, Merete; Ringdalen, Eli. (2011) The thermophysical properties of raw materials for ferromanganese production. Southern African Pyrometallurgy 2011 International Conference - SYMPOSIUM SERIES S64.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Tangstad, Merete. (2011) Pyrometallurgical Research at SINTEF and NTNU in Norway. Southern African Pyrometallurgy 2011 International Conference - SYMPOSIUM SERIES S64.
    Academic chapter/article/Conference paper
  • Safarian, Jafar; Kolbeinsen, Leiv; Tangstad, Merete. (2011) Liquidus of Silicon Binary Systems. Metallurgical and Materials Transactions B. volum 42 (4).
    Academic article
  • Safarian, Jafar; Tangstad, Merete. (2011) Phase diagram study of the Si-P system in Si-rich region. Journal of Materials Research. volum 26 (12).
    Academic article
  • Zheng, Song-sheng; Engh, Thorvald Abel; Tangstad, Merete; Luo, Xue-tao. (2011) Numerical Simulation of Phosphorus Removal from Silicon by Induction Vacuum Refining. Metallurgical and Materials Transactions A. volum 42A (8).
    Academic article
  • Zheng, Song-sheng; Engh, Thorvald Abel; Tangstad, Merete; Luo, Xue-tao. (2011) Separation of Phosphorus from silicon by induction vacuum refining. Separation and Purification Technology. volum 82.
    Academic article
  • Zheng, Song-sheng; Safarian, Jafar; Seok, Seongho; Kim, Sungwook; Tangstad, Merete; Luo, Xue-tao. (2011) Elimination of phosphorus vaporizing from molten silicon at finite reduced pressure. Transactions of Nonferrous Metals Society of China. volum 21 (3).
    Academic article

2010

  • Brynjulfsen, Ingvild; Bakken, Astrid; Tangstad, Merete; Arnberg, Lars. (2010) Influence of oxidation on the wetting behavior of liquid silicon on Si3N4-coated substrates. Journal of Crystal Growth. volum 312 (16-17).
    Academic article
  • Ciftja, A.; Engh, Thorvald Abel; Tangstad, Merete. (2010) A model of foam filters. Metallurgical and Materials Transactions B. volum 41 (1).
    Academic article
  • Ciftja, Arjan; Engh, Thorvald Abel; Tangstad, Merete. (2010) A model of foam filters. Metallurgical and Materials Transactions B. volum 41 (1).
    Academic article
  • Ciftja, Arjan; Engh, Thorvald Abel; Tangstad, Merete. (2010) Wetting Properties of Molten Silicon with Graphite Materials. Metallurgical and Materials Transactions A. volum 41A (12).
    Academic article
  • Dalaker, Halvor; Tangstad, Merete. (2010) Boron - nitrogen interactions in liquid silicon. Conference record of the Photovoltaic Specialists Conference.
    Academic article
  • Gaal, Sean; Tangstad, Merete; Ravary, Benjamin; Ringdalen, Eli. (2010) Recycling of sludge from the production of manganese. XXV International Mineral Processing Congress.
    Academic chapter/article/Conference paper
  • Kline, Jeffery; Tangstad, Merete; Tranell, Gabriella. (2010) Effects of calcium oxide on the silicate structure during slag refining of silicon: a Raman spectroscopic study. The Proceedings of the 25th EU PVSEC/WCPEC-5 2010.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Gaal, S.; Tangstad, Merete; Ostrovski, Oleg. (2010) Ore melting and reduction in silicomanganese production. Metallurgical and Materials Transactions B. volum 41 (6).
    Academic article
  • Safarian, Jafar; Tangstad, Merete. (2010) Vacuum behaviour of the dissolved elements in molten silicon. Silicon for the Chemical and Solar Industry X.
    Academic chapter/article/Conference paper
  • Sørensen, Bjørn Eske; Gaal, S.; Tangstad, Merete; Ringdalen, Eli; Kononov, Ring; Ostrovski, Oleg. (2010) Properties of manganese ores and their change in the process of calcination. INFACON XII 2010, Proceedings of The twelfth international ferroalloys congress. Sustainable Future. Volume I + II.
    Academic chapter/article/Conference paper
  • Sørensen, Bjørn Eske; Gaal, Sean; Ringdalen, Eli; Tangstad, Merete; Kononov, Ring; Ostrovski, Oleg. (2010) Phase compositions of manganese ores and their change in the process of calcination. International Journal of Mineral Processing. volum 94 (3-4).
    Academic article
  • Tangstad, Merete; Leroy, Delphine; Ringdalen, Eli. (2010) Behaviour of agglomerates in ferromanganese production. INFACON XII 2010, Proceedings of The twelfth international ferroalloys congress. Sustainable Future. Volume I + II.
    Academic chapter/article/Conference paper

2009

  • Bao, Sarina; Kvithyld, A.; Gaal, S.; Engh, Thorvald Abel; Tangstad, Merete. (2009) Wetting of pure aluminum on filter materials graphite, AlF3 and Al2O3. Light Metals 2009.
    Academic chapter/article/Conference paper
  • Ciftja, A; Engh, Thorvald Abel; Tangstad, Merete; Kvithyld, A.; Øvrelid, E.J.. (2009) Removal of inclusions from silicon. JOM. volum 61 (11).
    Academic article
  • Ciftja, Arjan; Øvrelid, E.J.; Tangstad, Merete; Engh, Thorvald Abel; Fejzo, A.. (2009) Settling of particles in molten silicon before directional casting of a solar grade silicon ingot. TMS 2009 Supplemental Proceedings. Volum 2: Materials Characterization, Computation and Modeling.
    Academic chapter/article/Conference paper
  • Dalaker, Halvor; Tangstad, Merete. (2009) Temperature dependence of the solubility of nitrogen in liquid silicon equilibrated with silicon nitride. Materials transactions. volum 50 (11).
    Academic article
  • Dalaker, Halvor; Tangstad, Merete. (2009) Time and temperature dependence of the solubility of carbon in liquid silicon equilibrated with silicon carbide and its dependence on boron levels. Materials transactions. volum 50 (5).
    Academic article
  • Eidem, P.A.; Tangstad, Merete; Bakken, Jon Arne. (2009) Electrical conditions of a coke bed in SiMn production. Canadian metallurgical quarterly. volum 48 (4).
    Academic article
  • Eidem, Per Anders; Runde, Magne; Tangstad, Merete; Bakken, Jon Arne; Zhou, Z. Y.; Yu, A. B.. (2009) Effect of contact resistance on bulk resistivity of dry coke beds. Metallurgical and Materials Transactions B. volum 40 (3).
    Academic article
  • Gaal, S; Ringdalen, Eli; Vaganov, Danil; Tangstad, Merete. (2009) Melting phenomenon of manganese bearing ores. Molten 2009 : proceedings of the VIII International Conference on Molten Slags, Fluxes & Salts, 18-21 January 2009, Santiago, Chile.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Tangstad, Merete; Gaal, S. (2009) Initial melting and Reduction of Ore and Fluxes at the Top of the Coke Bed during SiMn-production. Molten 2009 : proceedings of the VIII International Conference on Molten Slags, Fluxes & Salts, 18-21 January 2009, Santiago, Chile.
    Academic chapter/article/Conference paper
  • Safarian, Jafar; Kolbeinsen, Leiv; Tangstad, Merete; Tranell, Gabriella. (2009) Kinetics and mechanism of the simultaneous carbothermic reduction of FeO and MnO from high-carbon ferromanganese slag. Metallurgical and Materials Transactions B. volum 40 (6).
    Academic article
  • Safarian, Jafar; Tangstad, Merete. (2009) Wettability of silicon carbide by CaO-SiO2 slags. Metallurgical and Materials Transactions B. volum 40 (6).
    Academic article
  • Tang, K.; Øvrelid, E.J.; Tranell, Gabriella; Tangstad, Merete. (2009) A thermochemical database for the solar cell silicon materials. Materials transactions. volum 50 (8).
    Academic article
  • Tang, Kai; Øvrelid, Eivind Johannes; Tranell, Gabriella; Tangstad, Merete. (2009) Critical assessment of the impurity diffusivities in solid and liquid silicon. JOM. volum 61 (11).
    Academic article
  • Øvrelid, E.J.; Tang, K.; Engh, Thorvald Abel; Tangstad, Merete. (2009) Feedstock. Crystal Growth of Si for Solar Cells.
    Academic chapter/article/Conference paper

2008

  • Ciftja, Arjan; Engh, Thorvald Abel; Tangstad, Merete. (2008) Refining and recycling of silicon: A review. 2008. ISBN 978-82-997357-2-8.
    Academic anthology/Conference proceedings
  • Ciftja, Arjan; Engh, Thorvald Abel; Tangstad, Merete; Kvithyld, Anne. (2008) Recycling of silicon scrap by filtration. Proceedings of the 18th Workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes.
    Academic chapter/article/Conference paper
  • Ciftja, Arjan; Engh, Thorvald Abel; Tangstad, Merete; Kvithyld, Anne. (2008) Recycling of solar cell silicon scrap by filtration. Proceedings of the 23rd European Photovoltaic Solar Energy Conference.
    Academic chapter/article/Conference paper
  • Ciftja, Arjan; Tangstad, Merete; Engh, Thorvald Abel. (2008) Wettability of silicon with refractory materials: A review. 2008. ISBN 978-82-997357-1-1.
    Academic anthology/Conference proceedings
  • Ciftja, Arjan; Øvrelid, E. J.; Tangstad, Merete; Engh, Thorvald Abel. (2008) Settling of solid particles in molten silicon as a refining step from metallurgical grade to solar grade silicon. Proceedings of the Third Nordic Symposium for Young Scientists in Metallurgy.
    Academic chapter/article/Conference paper
  • Dalaker, Halvor; Tangstad, Merete. (2008) TIME AND TEMPERATURE DEPENDENCE OF THE SOLUBILITY OF CARBON IN LIQUID SILICON. The Proceedings of the 23rd European Photovoltaic Solar Energy Conference.
    Academic chapter/article/Conference paper
  • Dalaker, Halvor; Tangstad, Merete. (2008) The Solubility Of Carbon In Liquid Silicon And Its Dependence On The Boron Levels. Proceedings of the 18th Workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes.
    Academic chapter/article/Conference paper
  • Eidem, Per Anders; Tangstad, Merete; Bakken, Jon Arne. (2008) Determination of electrical resistivity of dry coke beds. Metallurgical and Materials Transactions B. volum 39 (1).
    Academic article
  • Safarian-Dastjerdi, Jafar; Tranell, Gabriella; Tangstad, Merete; Kolbeinsen, Leiv; Gaal, Sean; Kaczorowski, Jakub. (2008) Reduction kinetics of MnO from high-carbon ferromanganese slags by carbonaceous materials in Ar and CO atmospheres. Metallurgical and Materials Transactions B. volum 39.
    Academic article

2007

  • Dalaker, Halvor; Tangstad, Merete. (2007) EFFECTIVE DISTRIBUTION COEFFICIENT OF BORON IN MULTICRYSTALLINE SOLAR GRADE SILICON. The Proceedings of the 22nd European Photovoltaic Solar Energy Conference.
    Academic chapter/article/Conference paper
  • Eidem, Per Anders; Tangstad, Merete; Bakken, Jon Arne. (2007) Measurement of material resistivity and contact resistance of metallurgical coke. INFACON XI: Innovations in the Ferro Ally Industry, Volum 2.
    Academic chapter/article/Conference paper
  • Gaal, Sean; Lou, Dechun; Wasbø, Stein; Ravary, Benjamin; Tangstad, Merete. (2007) Melting phenomena in ferromanganese production. INFACON XI: Innovations in the Ferro Ally Industry, Volum 1.
    Academic chapter/article/Conference paper
  • Ishak, R.J.; Tangstad, Merete. (2007) Degree of prereduction without coke consumption in industrial furnaces. INFACON XI: Innovations in the Ferro Ally Industry, Volum 1.
    Academic chapter/article/Conference paper
  • Monsen, Bodil; Tangstad, Merete; Solheim, I.; Syvertsen, M.; Ishak, R.J.; Midtgaard, H.. (2007) Charcoal for manganese alloy production. INFACON XI: Innovations in the Ferro Ally Industry, Volum 1.
    Academic chapter/article/Conference paper
  • Olsen, Sverre E.; Tangstad, Merete; Lindstad, Tor. (2007) Production of manganese ferroalloys. Tapir Akademisk Forlag. 2007. ISBN 978-82-519-2191-6.
    Academic monograph
  • Tang, Kai; Tangstad, Merete. (2007) Modeling viscosities of ferromanganese slags. INFACON XI: Innovations in the Ferro Ally Industry, Volum 1.
    Academic chapter/article/Conference paper
  • Tranell, Gabriella; Gaal, Sean; Lu, D.; Tangstad, Merete; Safarian Dastjerdi, Jaafar. (2007) Reduction kinetics of manganese oxide from HC FeMn slags. INFACON XI: Innovations in the Ferro Ally Industry, Volum 1.
    Academic chapter/article/Conference paper

2004

  • Gaal, Sean; Berg, K.; Tranell, G.; Olsen, Sverre E.; Tangstad, Merete. (2004) An investigation into aspects of liquid phase reduction of manganese and silica containing slag. International Conference on Molten Slags Fluxes and Salts : Proceedings. volum VII.
    Academic article
  • Olsen, Sverre E.; Tangstad, Merete. (2004) Silicomanganese Production - Process Understanding. Proceedings / INFACON. volum 10.
    Academic article
  • Monsen, Bodil Elisabeth; Tangstad, Merete; Midtgaard, Håvard. (2004) Use of Charcoal in Silicomanganese Production. INFACON X 2004, Proceedings of the Tenth International Ferroalloys Congress. Transformation through Technology.
    Academic chapter/article/Conference paper

2002

  • Ostrovski, Oleg; Olsen, Sverre E.; Yastreboff, Michael; Tangstad, Merete. (2002) Kinetic Modelling of MnO Reduction from Manganese Ore. Canadian metallurgical quarterly. volum 41 (3).
    Academic article

2001

  • Røhmen, Camilla Modell; Tangstad, Merete; Olsen, Sverre E.. (2001) Melting and flow of slag and manganese ore in ferromanganese coke bed. 2001.
    Report

1999

  • Olsen, Sverre E.; Tangstad, Merete. (1999) Smeltereduksjon av HC FeMn-slagg i ASEA induksjonsovn. 1999.
    Report

Journal publications

  • Davies, Emlyn John; Tangstad, Merete; Schanche, Trygve Lindahl; du Preez, Preez. (2023) Pre-reduction of United Manganese of Kalahari Ore in CO/CO<inf>2</inf>, H<inf>2</inf>/H<inf>2</inf>O, and H<inf>2</inf> Atmospheres. Metallurgical and Materials Transactions B.
    Academic article
  • Folstad, Marit Buhaug; Yu, Han; Wang, Haijuan; Tangstad, Merete. (2023) Disintegration of Six Different Quartz Types during Heating to 1600 °C. Minerals. volum 13 (2).
    Academic article
  • Bublik, Sergey; Tangstad, Merete; Einarsrud, Kristian Etienne. (2022) Interfacial Behaviour in Ferroalloys: The Influence of FeMn Slag Composition. Metallurgical and Materials Transactions B. volum 53B (5).
    Academic article
  • da Luz Pascoal, Aline; Aristides Victor Rossoni, Hygor; Kaffash, Hamideh; Tangstad, Merete; Bicalho Henriques, Andréia. (2022) Study of the Physical Behaviour and the Carbothermal Reduction of Self-Reducing Briquettes Developed with Iron Ore Fines, Charcoal and Silica Fume Residues. Sustainability. volum 14 (17).
    Academic article
  • Davies, Jamey; Paktunc, Dogan; Ramos-Hernandez, José Juan; Tangstad, Merete; Ringdalen, Eli; Beukes, Johan P.; Bessarabov, Dmitri G.; Du Preez, Stephanus P.. (2022) The use of hydrogen as a potential reductant in the chromite smelting industry. Minerals. volum 12 (5).
    Academic article
  • Davies, Jamey; Tangstad, Merete; Ringdalen, Eli; Beukes, Johan Paul; Bessarabov, Dmitri; du Preez, Stephanus Petrus. (2022) The Effect of Pre-Oxidation on the Reducibility of Chromite Using Hydrogen: A Preliminary Study. Minerals. volum 12 (7).
    Academic article
  • Goso, Xolisa; Petersen, Jochen; Tangstad, Merete; Safarian, Jafar. (2022) Beneficiation of fluxed titaniferous slag to a marketable titania product using the modified upgraded slag process. Mineral Processing and Extractive Metallurgy: Transactions of the Institute of Mining and Metallurgy. volum 131 (3).
    Academic article
  • Haghdani, Shokouh; Tangstad, Merete; Einarsrud, Kristian Etienne. (2022) A Raman-Structure Model for the Viscosity of SiO2- CaO-Al2O3 System. Metallurgical and Materials Transactions B. volum 53B.
    Academic article
  • Hoover, Haley; Andersen, Vegar; Sævarsdottir, Gudrun; Tangstad, Merete. (2022) Excavation of 160kW Pilot Scale Si furnace. Aspects in Mining & Mineral Science (AMMS). volum 9 (2).
    Academic article
  • Jiao, Jian Meng; Safarian, Jafar; Tangstad, Merete. (2022) The Use of Fe-26Si-9B Alloy as Phase Change Material in Si<inf>3</inf>N<inf>4</inf> Container. Crystals. volum 12 (3).
    Academic article
  • Jusnes, Karin Fjeldstad; Ringdalen, Eli; Tangstad, Merete. (2022) The effects of cristobalite formation on disintegration of quartz. Materials at High Temperature.
    Academic article
  • Kaffash, Hamideh; Tangstad, Merete. (2022) CO2 Gasification of Densified Biomass: The Influence of K on Reaction Rate. JOM. volum 74 (5).
    Academic article
  • Larssen, Trine Asklund; Tangstad, Merete. (2022) Effect of Moisture, Hydrogen, and Water–Gas Shift Reaction on the Prereduction Behavior of Comilog and Nchwaning Manganese Ores. Metallurgical and Materials Transactions B. volum 53.
    Academic article
  • Mukono, Tichaona; Reiersen, Henrik Stensdal; Schanche, Trygve Lindahl; Wallin, Maria; Tangstad, Merete. (2022) Prereduction Behavior of Manganese Ores With Solid Carbon and in CO/CO<inf>2</inf> Gas Atmosphere. Metallurgical and Materials Transactions B. volum 53B (5).
    Academic article
  • Mukono, Tichaona; Wallin, Maria; Tangstad, Merete. (2022) Phase Distribution During Slag Formation in Mn Ferroalloy Production. Metallurgical and Materials Transactions B. volum 53B.
    Academic article
  • Mukono, Tichaona; Wallin, Maria; Tangstad, Merete. (2022) Slag Reduction and Viscosities Interaction in Ferromanganese Process. The Minerals, Metals & Materials Series.
    Academic article
  • Olsen, Jan Erik; Ksiazek, Michal Tomasz; Tangstad, Merete. (2022) CFD Study on Continuous Tapping of Silicon. The Minerals, Metals & Materials Series.
    Academic article
  • Surup, Gerrit Ralf; Kaffash, Hamideh; Ma, Yan; Trubetskaya, Anna; Pettersen, Johan Berg; Tangstad, Merete. (2022) Life Cycle Based Climate Emissions of Charcoal Conditioning Routes for the Use in the Ferro-Alloy Production. Energies. volum 15 (11).
    Academic article
  • Tangstad, Merete; Olsen, Jan Erik; Ringdalen, Eli; Ksiazek, Michal Tomasz; Reynolds, Quinn; Steenkamp, Joalet. (2022) Conceptual Tapping Model of Mn-Ferroalloy Furnaces. JOM. volum 74 (11).
    Academic article
  • Aarnæs, Trygve Storm; Tangstad, Merete; Ringdalen, Eli. (2021) SiC formation and SiO reactivity of methane at high temperatures. Materials Chemistry and Physics. volum 276.
    Academic article
  • Bao, Sarina; Tangstad, Merete; Tang, Kai; Einarsrud, Kristian Etienne; Syvertsen, Martin; Onsøien, Morten Ingar; Kudyba, Artur; Bublik, Sergey. (2021) Investigation of Two Immiscible Liquids Wetting at Elevated Temperature: Interaction Between Liquid FeMn Alloy and Liquid Slag. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Bublik, Sergey; Bao, Sarina; Tangstad, Merete; Einarsrud, Kristian Etienne. (2021) Interfacial Behaviour in Ferroalloys: The Influence of Sulfur in FeMn and SiMn Systems. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Canaguier, Vincent Yves; Tangstad, Merete. (2021) In situ observation of the carbothermic reduction and foaming of slags in silicomanganese production. Processes. volum 9 (11).
    Academic article
  • Folstad, Marit Buhaug; Ringdalen, Eli; Tveit, Halvard; Tangstad, Merete. (2021) Effect of different SiO2 polymorphs on the reaction between SiO2 and SiC in Si production. Metallurgical and Materials Transactions B. volum 52B (2).
    Academic article
  • Glastonbury, Ralph; Beukes, Paul; van Zyl, Pieter Gideon; Tangstad, Merete; Ringdalen, Eli; Dall, Douglas; Steenkamp, Joalet Dalene; Mushwana, Masana. (2021) Characterisation of a real-world Søderberg electrode. Metals. volum 11 (5).
    Academic article
  • Goso, Xolisa; Petersen, Jochen; Tangstad, Merete; Safarian, Jafar. (2021) Beneficiation of fluxed titaniferous slag to a marketable titania product using the modified upgraded slag process. Mineral Processing and Extractive Metallurgy: Transactions of the Institute of Mining and Metallurgy.
    Academic article
  • He, Jiali; Jusnes, Karin Fjeldstad; Tangstad, Merete. (2021) Phase transformation in quartz at elevated temperatures. Aspects in Mining & Mineral Science (AMMS).
    Article
  • Jiao, Jianmeng; Tang, Kai; Safarian, Jafar; Grorud, Bettina; Sellevoll, Kathrine; Tangstad, Merete. (2021) High temperature interaction between Si–B alloys and Si3N4. Ceramics International. volum 47 (10).
    Academic article
  • Kaffash, Hamideh; Surup, Gerrit Ralf; Tangstad, Merete. (2021) Densification of Biocarbon and Its Effect on CO2 Reactivity. Processes. volum 9 (2).
    Academic article
  • Larssen, Trine Asklund; Senk, Dieter Georg; Tangstad, Merete. (2021) Reaction Rate Analysis of Manganese Ore Prereduction in CO-CO2 Atmosphere. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Larssen, Trine Asklund; Tangstad, Merete. (2021) Off-gas characteristics for varying conditions in the prereduction zone of a ferromanganese furnace – a basis for energy recovery. Social Science Research Network (SSRN).
    Academic article
  • Mukono, Tichaona; Gjøvik, Jonas Einan; Gaertner, Heiko; Wallin, Maria; Ringdalen, Eli; Tangstad, Merete. (2021) Extent of Ore Prereduction in Pilot-scale Production of High Carbon Ferromanganese. SSRN Electronic Journal.
    Academic article
  • Ramos, D.C.; Carneiro, A.C.O.; Tangstad, Merete; Pereira, B.L.C.; Saadieh, Raghed; Oliveira, A.C.; Vital, B.R.. (2021) Reactivity assessment of charcoal for use in silicon production. European Journal of Wood and Wood Products. volum 79 (3).
    Academic article
  • Schanche, Trygve Lindahl; Tangstad, Merete. (2021) Isothermal Reduction of Nchwaning Manganese Ore in CO/CO2/H2 Atmospheres. SSRN Electronic Journal.
    Academic article
  • Schanche, Trygve Lindahl; Tangstad, Merete. (2021) Prereduction of nchwaning ore in CO/CO<inf>2</inf>/H<inf>2</inf> gas mixtures. Minerals. volum 11 (10).
    Academic article
  • Sindland, Caroline; Tangstad, Merete. (2021) Production Rate of SiO Gas from Industrial Quartz and Silicon. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Surup, Gerrit Ralf; Trubetskaya, Anna; Tangstad, Merete. (2021) Life cycle assessment of renewable reductants in the ferromanganese alloy production: A review. Processes. volum 9 (1).
    Academic literature review
  • Tangstad, Merete; Bublik, Sergey; Haghdani, Shokouh; Einarsrud, Kristian Etienne; Tang, Kai. (2021) Slag Properties in the Primary Production Process of Mn-Ferroalloys. Metallurgical and Materials Transactions B. volum 52B.
    Academic literature review
  • Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Sævarsdottir, Gudrun. (2021) The Effect of Electrode Movements on Electrical Characteristics of a Submerged Arc Furnace. JOM. volum 73 (10).
    Academic article
  • Aarnæs, Trygve Storm; Ringdalen, Eli; Tangstad, Merete. (2020) Silicon carbide formation from methane and silicon monoxide. Scientific Reports. volum 10 (1).
    Academic article
  • Broggi, Andrea; Ringdalen, Eli; Tangstad, Merete. (2020) Characterization, Thermodynamics and Mechanism of Formation of SiC-SiOx Core–Shell Nanowires. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Broggi, Andrea; Ringdalen, Eli; Tangstad, Merete. (2020) Evolution of SiOx shell layers on SiC-SiOx core-shell nanowires. Materials Science Forum. volum 1004.
    Academic article
  • Canaguier, Vincent Yves; Tangstad, Merete. (2020) Kinetics of Slag Reduction in Silicomanganese Production. Metallurgical and Materials Transactions B. volum 51B.
    Academic article
  • Jayakumari, Sethulakshmy; Tangstad, Merete. (2020) Transformation of β-SiC from Charcoal, Coal, and Petroleum Coke to α-SiC at Higher Temperatures. Metallurgical and Materials Transactions B. volum 51B.
    Academic article
  • Jayakumari, Sethulakshmy; Vullum, Per Erik; Van Helvoort, Antonius; Tangstad, Merete. (2020) SiC crystalline micro bullets on bio-carbon based charcoal substrate. Journal of Crystal Growth. volum 545.
    Academic article
  • Jesus, Leandro Gustavo de Mendes; Tangstad, Merete. (2020) CO Reactivity of Manganese Lumps Versus Briquettes. ISIJ International. volum 60 (10).
    Academic article
  • Jiao, Jian Meng; Grorud, Bettina; Safarian, Jafar; Tangstad, Merete. (2020) The Use of Si-B Alloys in Thermal Energy Storage System. Journal of Physics: Conference Series (JPCS). volum 1527 (1).
    Academic article
  • Jusnes, Karin Fjeldstad; Ringdalen, Eli; Tangstad, Merete. (2020) Phase Transformations in Quartz used in Silicon and Ferrosilicon Production. Aspects in Mining & Mineral Science (AMMS). volum 5 (5).
    Academic article
  • Jusnes, Karin Fjeldstad; Tangstad, Merete; Ringdalen, Eli. (2020) Phase transformations in quartz used in silicon and ferrosilicon. Aspects in Mining & Mineral Science (AMMS). volum 5 (5).
    Academic article
  • Kaffash, Hamideh; Tangstad, Merete. (2020) Factors influencing dissolution of carbonaceous materials in liquid Fe– Mn. Journal of Iron and Steel Research International. volum 27.
    Academic article
  • Kaffash, Hamideh; Xing, Xing; Tangstad, Merete. (2020) Wettability of cokes by Fe-Mn melt. Journal of Dispersion Science and Technology.
    Academic article
  • Larssen, Trine Asklund; Senk, Dieter Georg; Tangstad, Merete. (2020) Reduction of Manganese Ores in CO-CO2 Atmospheres. Metallurgical and Materials Transactions B. volum 52B.
    Academic article
  • Li, Xiang; Tang, Kai; Tangstad, Merete. (2020) Reduction and Dissolution Behaviour of Manganese Slag in the Ferromanganese Process. Minerals. volum 10(2) (97).
    Academic article
  • Ngoy, Didier; Sukhomlinov, Dmitry; Tangstad, Merete. (2020) Pre-reduction Behaviour of Manganese Ores in H2 and CO Containing Gases. ISIJ International. volum 60 (11).
    Academic article
  • Surup, Gerrit Ralf; Pedersen, Tommy Andre; Chaldien, Annah; Beukes, Johan Paul; Tangstad, Merete. (2020) Electrical Resistivity of Carbonaceous Bed Material at High Temperature. Processes. volum 8 (8).
    Academic article
  • Surup, Gerrit Ralf; Trubetskaya, Anna; Tangstad, Merete. (2020) Charcoal as an Alternative Reductant in Ferroalloy Production: A Review. Processes. volum 8.
    Academic literature review
  • Tesfahunegn, Yonatan; Magnusson, Tordur; Tangstad, Merete; Sævarsdottir, Gudrun A.. (2020) Comparative study of AC and DC solvers based on current and power distributions in a submerged arc furnace. Metallurgical and Materials Transactions B. volum 51 (2).
    Academic article
  • Aarnæs, Trygve Storm; Tangstad, Merete. (2019) Effect of H2 on SiO and SiC formation. Építőanyag - Journal of Silicate Based and Composite Materials. volum 71 (6).
    Academic article
  • Broggi, Andrea; Tangstad, Merete; Ringdalen, Eli. (2019) Characterization of a Si-SiO2 Mixture Generated from SiO(g) and CO(g). Metallurgical and Materials Transactions B. volum 50 (6).
    Academic article
  • Heimo, Juhani; Jokilaakso, Ari; Kekkonen, Marko; Tangstad, Merete; Støre, Anne. (2019) Thermal conductivity of titanium slags. Metallurgical Research and Technology. volum 116 (6).
    Academic article
  • Jiao, Jianmeng; Grorud, Bettina; Sindland, Caroline; Safarian, Jafar; Tang, Kai; Sellevoll, Kathrine; Tangstad, Merete. (2019) The Use of Eutectic Fe-Si-B Alloy as a Phase Change Material in Thermal Energy Storage Systems. Materials. volum 12 (14).
    Academic article
  • Jiao, Jianmeng; Safarian, Jafar; Grorud, Bettina; Tangstad, Merete. (2019) High Temperature Interaction of Si-B Alloys with Graphite Crucible in Thermal Energy Storage Systems. Materials. volum 13 (29).
    Academic article
  • Kalenga, M; Tangstad, Merete; Pan, X. (2019) Phase Relations in Ferromanganese Production During Prereduction: South African Ores. Metallurgist (New York). volum 62 (11-12).
    Academic article
  • Kim, Pyunghwa; Larssen, Trine Asklund; Tangstad, Merete. (2019) Reduction rates of MnO and SiO2 in SiMn slags between 1500 and 1650°C. The Southern African Journal of Mining and Metallurgy. volum 119 (5).
    Academic article
  • Larssen, Trine Asklund; Kero, Ida; Tangstad, Merete. (2019) Energy Distribution in HC FeMn and SiMn - Energy vs Exergy Analyses. The Southern African Journal of Mining and Metallurgy. volum 119 (12).
    Academic article
  • Myklebust, Håkon Aleksander; Tangstad, Merete. (2019) Simulation of Electrical Current Paths in a MnFerroalloy Furnace. Aspects in Mining & Mineral Science (AMMS). volum 4 (1).
    Academic article
  • Ramos, Diego Correa; Carneiro, Angélica de Cássia Oliveira; Tangstad, Merete; Saadieh, Raghed; Pereira, Bárbara Luísa Corradi. (2019) Quality of Wood and Charcoal from Eucalyptus Clones for Metallurgical Use. Floresta e Ambiente. volum 26 (2).
    Academic article
  • Tangstad, Merete; Safarian, Jafar; Bao, Sarina; Ringdalen, Eli; Valderhaug, Aasgeir. (2019) Reaction Rates of 2SiO2+SiC=3SiO+CO in Pellets at Elevated Temperatures. Aspects in Mining & Mineral Science (AMMS). volum 3 (2).
    Academic article
  • Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Saevarsdottir, Gudrun. (2019) Dynamic Current and Power Distributions in a Submerged Arc Furnace. The Minerals, Metals & Materials Series.
    Academic article
  • Datas, Alejandro; Cristobal, Ana Belen; del Cañizo, Carlos; Antolin, Elisa; Beaughon, Michel; Nikolopoulos, Nikolaos; Nikolopoulos, Aristeidis; Zeneli, Myrto; Sobczak, Natalia; Polkowski, Wojciech; Tangstad, Merete; Safarian, Jafar; Trucchi, Daniele M; Bellucci, Alessandro; Girolami, Marco; Marx, Roman; Bestenlehner, Dominik; Lang, Stephan; Vitulano, Aniello; Sabbatella, Gianfranco; Marti, Antonio. (2018) AMADEUS: Next generation materials and solid state devices for ultra high temperature energy storage and conversion. AIP Conference Proceedings. volum 2033.
    Academic article
  • du Preez, S.P; Beukes, Paul; van Zyl, Peter; Tangstad, Merete; Tiedt, LR. (2018) Silicon Carbide Formation Enhanced by In-Situ-Formed Silicon Nitride: An Approach to Capture Thermal Energy of CO-Rich Off-Gas Combustion. Metallurgical and Materials Transactions B. volum 49.
    Academic article
  • Jakobsson, Lars Klemet; Tangstad, Merete. (2018) Thermodynamics of Boron Removal from Silicon Using CaO-MgO-Al2O3-SiO2 Slags. Metallurgical and Materials Transactions B. volum 49 (4).
    Academic article
  • Kim, Pyunghwa; Tangstad, Merete. (2018) Kinetic Investigations of SiMn Slags From Different Mn Sources. Metallurgical and Materials Transactions B. volum 49 (3).
    Academic article
  • Li, Fei; Tangstad, Merete. (2018) Kinetic modeling of the reaction rate for quartz and carbon pellet. Metallurgical and Materials Transactions B. volum 49 (2).
    Academic article
  • Li, Fei; Tangstad, Merete; Ringdalen, Eli. (2018) Carbothermal reduction of quartz and carbon pellets at elevated temperatures. Metallurgical and Materials Transactions B. volum 49 (3).
    Academic article
  • Li, Xiang; Tangstad, Merete. (2018) The Influence of Sulfur Content on the Carbothermal Reduction of SiMn Slag. Metallurgical and Materials Transactions B. volum 50 (1).
    Academic article
  • Mwana Bute Ngoy, D; Kalenga wa Kalenga, M; Tangstad, Merete. (2018) Effect of Charge Basicity of Two Compositions on MnO Reduction During Smelting Ferromanganese. Metallurgist (New York). volum 62 (7-8).
    Academic article
  • Saadieh, Raghed; Tangstad, Merete; Wegge, Harald. (2018) Cavity Formation in Silicon Furnaces. Silicon for the Chemical and Solar Industry XIV Proceedings.
    Article
  • Saadieh, Raghed; Tangstad, Merete; Wegge, Harald. (2018) Simulation of the Ferrosilicon Process Using Small-Scale Laboratory Furnace. International Ferroalloys Congress INFACON : Proceedings.
    Article
  • Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Saevarsdottir, Gudrun. (2018) Dynamic Current Distribution in the Electrodes of Submerged Arc Furnace Using Scalar and Vector Potentials. Lecture Notes in Computer Science (LNCS). volum 10861 LNCS.
    Academic article
  • Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Saevarsdottir, Gudrun. (2018) Effect of carbide configuration on the current distribution in submerged arc furnaces for silicon production?A modelling approach. The Minerals, Metals & Materials Series. volum Part F3.
    Academic article
  • Tesfahunegn, Yonatan; Magnusson, Tordur; Tangstad, Merete; Saevarsdottir, Gudrun. (2018) Effect of electrode shape on the current distribution in submerged arc furnaces for silicon production - A modelling approach. Symposium series - Southern African Institute of Mining and Metallurgy. volum 118 (6).
    Academic article
  • Vadon, Mathieu; Sortland, Øyvind Sunde; Nuta, Ioana; Chatillon, Christian; Tangstad, Merete; Chichignoud, Guy; Delannoy, Yves. (2018) CFD Modeling of boron removal from liquid silicon with cold gases and plasma. Metallurgical and Materials Transactions B. volum 49 (3).
    Academic article
  • Vadon, Mathieu; Sortland, Øyvind Sunde; Tangstad, Merete; Chichignoud, Guy; Delannoy, Yves. (2018) Passivation Threshold for the Oxidation of Liquid Silicon and Thermodynamic Non-equilibrium in the Gas Phase. Metallurgical and Materials Transactions B. volum 49 (6).
    Academic article
  • van Staden, Yolindi; Beukes, Johan Paul; van Zyl, Pieter Gideon; Ringdalen, Eli; Tangstad, Merete; Kleynhans, Ernst L.J.; Bunt, John Reginald. (2018) Damring formation during rotary kiln chromite pre-reduction: Effects of pulverized carbonaceous fuel selection and partial pellet melting. Metallurgical and Materials Transactions B. volum 49 (6).
    Academic article
  • Kim, Pyunghwa; Larssen, Trine Asklund; Kawamoto, Ryosuke; Tangstad, Merete. (2017) Empirical Activation Energies of MnO and SiO2 Reduction in SiMn Slags Between 1500 and 1650 °C. The Minerals, Metals & Materials Series.
    Academic article
  • Li, Fei; Tangstad, Merete. (2017) Carbothermal Reduction of Quartz with Carbon from Natural Gas. Metallurgical and Materials Transactions B. volum 48 (2).
    Academic article
  • Polkowski, Wojciech; Sobczak, Natalia; Nowak, Rafal; Kudyba, Artur; Bruzda, Grzegorz; Polkowska, Adelajda; Homa, Marta; Turalska, Patrycja; Tangstad, Merete; Safarian, Jafar; Moosavi-Khoonsari, Elmira; Datas, Alejandro. (2017) Wetting Behavior and Reactivity of Molten Silicon with h-BN Substrate at Ultrahigh Temperatures up to 1750 °C. Journal of materials engineering and performance (Print). volum 27 (201).
    Academic article
  • Tangstad, Merete; Ringdalen, Eli; Manilla, Edmundo; Davila, Daniel. (2017) Pilot Scale Production of Manganese Ferroalloys Using Heat-Treated Mn-Nodules. JOM. volum 69 (2).
    Academic article
  • Bao, Sarina; Syvertsen, Martin; Nordmark, Arne; Kvithyld, Anne; Engh, Thorvald Abel; Tangstad, Merete. (2016) Plant scale investigation of liquid aluminium filtration by Al2O3 and SiC ceramic foam filters. The Minerals, Metals & Materials Series.
    Academic article
  • Jakobsson, Lars Klemet; Tangstad, Merete. (2015) Thermodynamic Activities and Distributions of Calcium and Magnesium Between Silicon and CaO-MgO-SiO2 Slags at 1873 K (1600 °C). Metallurgical and Materials Transactions B. volum 46 (2).
    Academic article
  • Steenkamp, JD; Pistorius, P Chris; Tangstad, Merete. (2015) Wear mechanisms of carbon-based refractory materials in SiMn tap-holes—part II: in situ observation of cemical reactions. Metallurgical and Materials Transactions B. volum 46 (2).
    Academic article
  • Steenkamp, JD; Pistorius, PC; Tangstad, Merete. (2015) Chemical wear analysis of a tap-hole on a SiMn production furnace. The Southern African Journal of Mining and Metallurgy. volum 115 (3).
    Academic article
  • Steenkamp, Joalet Dalene; Pistorius, Petrus Chris; Tangstad, Merete. (2015) Wear mechanisms of carbon-based refractory materials in silicomanganese tap holes—part I: equilibrium calculations and slag and refractory characterization. Metallurgical and Materials Transactions B. volum 46 (2).
    Academic article
  • Dalaker, Halvor; Tangstad, Merete. (2014) The interactions of carbon and nitrogen in liquid silicon. High Temperature Materials and Processes. volum 33 (4).
    Academic article
  • Jakobsson, Lars Klemet; Tangstad, Merete. (2014) Distribution of Boron Between Silicon and CaO-MgO-Al2O3-SiO2 Slags. Metallurgical and Materials Transactions B. volum 45 (5).
    Academic article
  • Jakobsson, Lars Klemet; Tangstad, Merete. (2014) Erratum to: Distribution of boron between silicon and CaO-MgO-Al2O3-SiO2 slags. Metallurgical and Materials Transactions B.
    Errata
  • Kline, Jeffery; Tangstad, Merete; Tranell, Gabriella. (2014) A Raman Spectroscopic Study of the Structural Modifications Associated with the Addition of Calcium Oxide and Boron Oxide to Silica. Metallurgical and Materials Transactions B. volum 46 (1).
    Academic article
  • Ksiazek, Michal Tomasz; Tangstad, Merete; Dalaker, Halvor; Ringdalen, Eli. (2014) Reduction of SiO2 to SiC using natural gas. Metallurgical and Materials Transactions E. volum 1 (3).
    Academic article
  • Sortland, Øyvind Sunde; Tangstad, Merete. (2014) Boron Removal from Silicon Melts by H2O/H2 Gas Blowing: Mass Transfer in Gas and Melt. Metallurgical and Materials Transactions E. volum 1 (3).
    Academic article
  • Tang, Kai; Løvvik, Ole Martin; Safarian-Dastjerdi, Jafar; Ma, Xiang; Tangstad, Merete. (2014) Removal of Phosphorus in Metallurgical Silicon by Rare Earth Elements. Metallurgical and Materials Transactions E. volum 1 (3).
    Academic article
  • Turkova, Kira; Slizovskiy, Dmitry; Tangstad, Merete. (2014) Co reactivity and porosity of manganese materials. ISIJ International. volum 54 (6).
    Academic article
  • Bao, Sarina; Syvertsen, Martin; Nordmark, Arne; Kvithyld, Anne; Engh, Thorvald Abel; Tangstad, Merete. (2013) Plant Scale Investigation of Liquid Aluminium Filtration by Al2O3 and SiC Ceramic Foam Filters. Light Metals.
    Academic article
  • Safarian-Dastjerdi, Jafar; Tranell, Gabriella; Tangstad, Merete. (2013) Thermodynamic and Kinetic Behavior of B and Na Through the Contact of B-Doped Silicon with Na2O-SiO2 Slags. Metallurgical and Materials Transactions B. volum 44 (3).
    Academic article
  • Tangstad, Merete. (2013) Back to BASIC. International Innovation.
    Popular scientific article
  • Tangstad, Merete. (2013) Kobberprosessen i pepperkakeform. Arbeidets Rett.
    Popular scientific article
  • Bao, Sarina; Engh, Thorvald Abel; Syvertsen, Martin; Kvithyld, Anne; Tangstad, Merete. (2012) Inclusion (particle) removal by interception and gravity in ceramic foam filters. Journal of Materials Science. volum 47 (23).
    Academic article
  • Bao, Sarina; Kvithyld, Anne; Tang, Kai; Engh, Thorvald Abel; Tangstad, Merete. (2012) WETTABILITY OF ALUMINIUM WITH ALUMINIUM CARBIDE (GRAPHITE) IN ALUMINIUM FILTRATION. Light Metals.
    Academic article
  • Bao, Sarina; Tang, Kai; Kvithyld, Anne; Engh, Thorvald Abel; Tangstad, Merete. (2012) Wetting of pure aluminium on graphite, SiC and Al2O3 in aluminium filtration. Transactions of Nonferrous Metals Society of China. volum 22 (8).
    Academic article
  • Kadkhodabeigi, Mehdi; Safarian-Dastjerdi, Jafar; Tveit, Halvard; Tangstad, Merete; Johansen, Stein Tore. (2012) Removal of SiC particles from solar grade silicon melts by imposition of high frequency magnetic field. Transactions of Nonferrous Metals Society of China. volum 22 (11).
    Academic article
  • Nordstrand, Erlend Fjøsne; Tangstad, Merete. (2012) Removal of boron from silicon by moist hydrogen gas. Metallurgical and Materials Transactions B. volum 43 (4).
    Academic article
  • Safarian, Jafar; Kolbeinsen, Leiv; Tangstad, Merete. (2012) Thermodynamic activities in silicon binary melts. Journal of Materials Science. volum 47 (14).
    Academic article
  • Safarian, Jafar; Tangstad, Merete. (2012) Kinetics and Mechanism of Phosphorus Removal from Silicon in Vacuum Induction Refining. High Temperature Materials and Processes. volum 31 (1).
    Academic article
  • Safarian, Jafar; Tangstad, Merete. (2012) Vacuum refining of molten silicon. Metallurgical and Materials Transactions B. volum 43 (6).
    Academic article
  • Safarian-Dastjerdi, Jafar; Tranell, Gabriella; Tangstad, Merete. (2012) Processes for upgrading metallurgical grade silicon to solar grade silicon. Energy Procedia. volum 20.
    Academic article
  • Tang, Kai; Andersson, Stefan; Nordstrand, Erlend Fjøsne; Tangstad, Merete. (2012) Removal of Boron in Silicon by H2-H2O Gas Mixtures. JOM. volum 64 (8).
    Academic article
  • Tang, Kai; Tangstad, Merete. (2012) A thermodynamic description of the Si-rich Si-Fe system. Acta Metallurgica Sinica (English Letters). volum 25 (4).
    Academic article
  • Øvrelid, Eivind Johannes; Tangstad, Merete; Tranell, Gabriella; Lohne, Otto; Ceccaroli, Bruno. (2012) New advances in metallurgical solar grade silicon based on recent Norwegian research activities. Physica Status Solidi. C, Current topics in solid state physics. volum 9 (10-11).
    Academic article
  • Bao, Sarina; Tang, Kai; Kvithyld, Anne; Tangstad, Merete; Engh, Thorvald Abel. (2011) Wettability of Aluminum on Alumina. Metallurgical and Materials Transactions B. volum 42 (6).
    Academic article
  • Safarian, Jafar; Kolbeinsen, Leiv; Tangstad, Merete. (2011) Liquidus of Silicon Binary Systems. Metallurgical and Materials Transactions B. volum 42 (4).
    Academic article
  • Safarian, Jafar; Tangstad, Merete. (2011) Phase diagram study of the Si-P system in Si-rich region. Journal of Materials Research. volum 26 (12).
    Academic article
  • Zheng, Song-sheng; Engh, Thorvald Abel; Tangstad, Merete; Luo, Xue-tao. (2011) Numerical Simulation of Phosphorus Removal from Silicon by Induction Vacuum Refining. Metallurgical and Materials Transactions A. volum 42A (8).
    Academic article
  • Zheng, Song-sheng; Engh, Thorvald Abel; Tangstad, Merete; Luo, Xue-tao. (2011) Separation of Phosphorus from silicon by induction vacuum refining. Separation and Purification Technology. volum 82.
    Academic article
  • Zheng, Song-sheng; Safarian, Jafar; Seok, Seongho; Kim, Sungwook; Tangstad, Merete; Luo, Xue-tao. (2011) Elimination of phosphorus vaporizing from molten silicon at finite reduced pressure. Transactions of Nonferrous Metals Society of China. volum 21 (3).
    Academic article
  • Brynjulfsen, Ingvild; Bakken, Astrid; Tangstad, Merete; Arnberg, Lars. (2010) Influence of oxidation on the wetting behavior of liquid silicon on Si3N4-coated substrates. Journal of Crystal Growth. volum 312 (16-17).
    Academic article
  • Ciftja, A.; Engh, Thorvald Abel; Tangstad, Merete. (2010) A model of foam filters. Metallurgical and Materials Transactions B. volum 41 (1).
    Academic article
  • Ciftja, Arjan; Engh, Thorvald Abel; Tangstad, Merete. (2010) A model of foam filters. Metallurgical and Materials Transactions B. volum 41 (1).
    Academic article
  • Ciftja, Arjan; Engh, Thorvald Abel; Tangstad, Merete. (2010) Wetting Properties of Molten Silicon with Graphite Materials. Metallurgical and Materials Transactions A. volum 41A (12).
    Academic article
  • Dalaker, Halvor; Tangstad, Merete. (2010) Boron - nitrogen interactions in liquid silicon. Conference record of the Photovoltaic Specialists Conference.
    Academic article
  • Ringdalen, Eli; Gaal, S.; Tangstad, Merete; Ostrovski, Oleg. (2010) Ore melting and reduction in silicomanganese production. Metallurgical and Materials Transactions B. volum 41 (6).
    Academic article
  • Sørensen, Bjørn Eske; Gaal, Sean; Ringdalen, Eli; Tangstad, Merete; Kononov, Ring; Ostrovski, Oleg. (2010) Phase compositions of manganese ores and their change in the process of calcination. International Journal of Mineral Processing. volum 94 (3-4).
    Academic article
  • Ciftja, A; Engh, Thorvald Abel; Tangstad, Merete; Kvithyld, A.; Øvrelid, E.J.. (2009) Removal of inclusions from silicon. JOM. volum 61 (11).
    Academic article
  • Dalaker, Halvor; Tangstad, Merete. (2009) Temperature dependence of the solubility of nitrogen in liquid silicon equilibrated with silicon nitride. Materials transactions. volum 50 (11).
    Academic article
  • Dalaker, Halvor; Tangstad, Merete. (2009) Time and temperature dependence of the solubility of carbon in liquid silicon equilibrated with silicon carbide and its dependence on boron levels. Materials transactions. volum 50 (5).
    Academic article
  • Eidem, P.A.; Tangstad, Merete; Bakken, Jon Arne. (2009) Electrical conditions of a coke bed in SiMn production. Canadian metallurgical quarterly. volum 48 (4).
    Academic article
  • Eidem, Per Anders; Runde, Magne; Tangstad, Merete; Bakken, Jon Arne; Zhou, Z. Y.; Yu, A. B.. (2009) Effect of contact resistance on bulk resistivity of dry coke beds. Metallurgical and Materials Transactions B. volum 40 (3).
    Academic article
  • Safarian, Jafar; Kolbeinsen, Leiv; Tangstad, Merete; Tranell, Gabriella. (2009) Kinetics and mechanism of the simultaneous carbothermic reduction of FeO and MnO from high-carbon ferromanganese slag. Metallurgical and Materials Transactions B. volum 40 (6).
    Academic article
  • Safarian, Jafar; Tangstad, Merete. (2009) Wettability of silicon carbide by CaO-SiO2 slags. Metallurgical and Materials Transactions B. volum 40 (6).
    Academic article
  • Tang, K.; Øvrelid, E.J.; Tranell, Gabriella; Tangstad, Merete. (2009) A thermochemical database for the solar cell silicon materials. Materials transactions. volum 50 (8).
    Academic article
  • Tang, Kai; Øvrelid, Eivind Johannes; Tranell, Gabriella; Tangstad, Merete. (2009) Critical assessment of the impurity diffusivities in solid and liquid silicon. JOM. volum 61 (11).
    Academic article
  • Eidem, Per Anders; Tangstad, Merete; Bakken, Jon Arne. (2008) Determination of electrical resistivity of dry coke beds. Metallurgical and Materials Transactions B. volum 39 (1).
    Academic article
  • Safarian-Dastjerdi, Jafar; Tranell, Gabriella; Tangstad, Merete; Kolbeinsen, Leiv; Gaal, Sean; Kaczorowski, Jakub. (2008) Reduction kinetics of MnO from high-carbon ferromanganese slags by carbonaceous materials in Ar and CO atmospheres. Metallurgical and Materials Transactions B. volum 39.
    Academic article
  • Gaal, Sean; Berg, K.; Tranell, G.; Olsen, Sverre E.; Tangstad, Merete. (2004) An investigation into aspects of liquid phase reduction of manganese and silica containing slag. International Conference on Molten Slags Fluxes and Salts : Proceedings. volum VII.
    Academic article
  • Olsen, Sverre E.; Tangstad, Merete. (2004) Silicomanganese Production - Process Understanding. Proceedings / INFACON. volum 10.
    Academic article
  • Ostrovski, Oleg; Olsen, Sverre E.; Yastreboff, Michael; Tangstad, Merete. (2002) Kinetic Modelling of MnO Reduction from Manganese Ore. Canadian metallurgical quarterly. volum 41 (3).
    Academic article

Books

  • Andresen, Birger; Rong, Harry Morten; Tangstad, Merete; Tveit, Halvard; Page, Ingrid Gamst. (2020) Silicon for the Chemical and Solar Industry XV. 2020. ISBN 978-82-997357-9-7.
    Academic anthology/Conference proceedings
  • Tangstad, Merete. (2020) Silicon for the Chemical and Solar Industry XV. 2020. ISBN 978-82-997357-9-7.
    Academic anthology/Conference proceedings
  • Jiao, Jianmeng; Grorud, Bettina; Safarian, Jafar; Tangstad, Merete. (2019) WETTABILITY OF MOLTEN Fe-Si-B ALLOY ON GRAPHITE, Al2O3, AND h-BN SUBSTRATES. 2019. ISBN 0-87339-771-1.
    Academic anthology/Conference proceedings
  • Andresen, Birger; Nygaard, Lars; Rong, Harry Morten; Tangstad, Merete; Tveit, Halvard; Page, Ingrid Gamst. (2018) Silicon for the Chemical and Solar Industry XIV. Norges teknisk-naturvitenskapelige universitet. 2018. ISBN 9788269291926.
    Academic anthology/Conference proceedings
  • Nygård, Lars; Pachaly, Bernd; Rong, Harry Morten; Tangstad, Merete; Tveit, Halvard; Page, Ingrid Gamst. (2016) Silicon for the Chemical and Solar Industry XIII. Norges teknisk-naturvitenskapelige universitet. 2016. ISBN 9788269291919.
    Academic anthology/Conference proceedings
  • Øye, Harald Arnljot; Brekken, H.; Nygaard, Lars; Rong, Harry Morten; Tangstad, Merete; Tveit, Halvard. (2014) Silicon for the Chemical and Solar Industry XII. 2014. ISBN 978-82-997357-8-0.
    Academic anthology/Conference proceedings
  • Ciftja, Arjan; Engh, Thorvald Abel; Tangstad, Merete. (2008) Refining and recycling of silicon: A review. 2008. ISBN 978-82-997357-2-8.
    Academic anthology/Conference proceedings
  • Ciftja, Arjan; Tangstad, Merete; Engh, Thorvald Abel. (2008) Wettability of silicon with refractory materials: A review. 2008. ISBN 978-82-997357-1-1.
    Academic anthology/Conference proceedings
  • Olsen, Sverre E.; Tangstad, Merete; Lindstad, Tor. (2007) Production of manganese ferroalloys. Tapir Akademisk Forlag. 2007. ISBN 978-82-519-2191-6.
    Academic monograph

Part of book/report

  • Hoover, Haley; Sævarsdottir, Gudrun; Tangstad, Merete. (2022) Electrical Resistivity of Transformed Carbon Materials in the Silicon Furnace. Furnace tapping 2022.
    Academic chapter/article/Conference paper
  • Folstad, Marit Buhaug; Ksiazek, Michal Tomasz; Tangstad, Merete. (2020) Slag in the Tapping Area in a Si Furnace. Silicon for the Chemical and Solar Industry XV.
    Academic chapter/article/Conference paper
  • Bublik, Sergey; Bao, Sarina; Tangstad, Merete; Einarsrud, Kristian Etienne. (2019) Slag-metal interactions in the FeMn tapping process: Interfacial properties and wetting. Proceedings of the Liquid Metal Processing & Casting Conference 2019.
    Academic chapter/article/Conference paper
  • Broggi, Andrea; Tangstad, Merete. (2018) Small scale experiments simulating condensation of SiO and CO in silicon furnace. Silicon for the Chemical and Solar Industry XIV.
    Academic chapter/article/Conference paper
  • Jayakumari, Sethulakshmy; Tangstad, Merete. (2018) Formation of elemental silicon in β-SiC par. Silicon for the Chemical and Solar Industry XIV.
    Academic chapter/article/Conference paper
  • Jusnes, Karin Fjeldstad; Tangstad, Merete; Ringdalen, Eli. (2018) Cracks, Disintegration and Phases Transformations in Quartz. Silicon for the Chemical and Solar Industry XIV.
    Academic chapter/article/Conference paper
  • Jusnes, Karin Fjeldstad; Tangstad, Merete; Ringdalen, Eli. (2018) Phase Transformations from Quartz to Cristobalite. Extraction 2018- Proceedings of the First Global Conference on Extractive Metallurgy.
    Academic chapter/article/Conference paper
  • Larssen, Trine Asklund; Tangstad, Merete; Kero, Ida. (2018) Gaseous reduction of Mn ores in CO-CO2 atmosphere. Extraction 2018- Proceedings of the First Global Conference on Extractive Metallurgy.
    Academic chapter/article/Conference paper
  • Polkowski, Wojciech; Sobczak, Natalia; Tangstad, Merete; Safarian, Jafar; Jiao, Jian Meng; Grorud, Bettina. (2018) Silicon and silicon-boron alloys as phase change materials in thermal energy storage units. Silicon for the Chemical and Solar Industry XIV.
    Academic chapter/article/Conference paper
  • Saadieh, Raghed; Tangstad, Merete; Wegge, Harald. (2018) Cavity formation in silicon furnaces. Silicon for the Chemical and Solar Industry XIV.
    Academic chapter/article/Conference paper
  • Tangstad, Merete; Beukes, Paul; Steenkamp, Joalet Dalene; Ringdalen, Eli. (2018) Chapter 14: Coal-based reducing agents in ferroalloys and silicon production. New Trends in Coal Conversion Combustion, Gasification, Emissions, and Coking,.
    Chapter
  • Letout, Sebastien Romain; Ratvik, Arne Petter; Tangstad, Merete; Johansen, Stein Tore; Olsen, Jan Erik. (2017) A multiscale numerical approach of the dripping slag in the coke bed zone of a pilot scale Si-Mn furnace. Progress in Applied CFD – CFD2017 Selected papers from 12th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries.
    Academic chapter/article/Conference paper
  • Ksiazek, Michal; Tangstad, Merete; Ringdalen, Eli. (2016) Five furnaces five different sto. Silicon for the Chemical and Solar Industry XIII.
    Academic chapter/article/Conference paper
  • Li, Fei; Tangstad, Merete. (2016) Use of agglomerated raw materials in Si production. Silicon for the Chemical and Solar Industry XIII.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Tangstad, Merete. (2016) Phase transformations in quartz and it's effect on furnace operation. Silicon for the Chemical and Solar Industry XIII.
    Academic chapter/article/Conference paper
  • Li, Fei; Tangstad, Merete; Solheim, Ingeborg. (2015) Quartz and Carbon Black Pellets for Silicon Production. Proceeding of THE FOURTEENTH INTERNATIONAL FERROALLOYS CONGRESS - Energy efficiency and environmental friendliness are the future of the global Ferroalloy industry.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Tangstad, Merete; Brynjulfsen, Thomas. (2015) Melting Behaviour of Mn sources - effect on furnace performance. Proceeding of THE FOURTEENTH INTERNATIONAL FERROALLOYS CONGRESS - Energy efficiency and environmental friendliness are the future of the global Ferroalloy industry.
    Academic chapter/article/Conference paper
  • Tangstad, Merete; Ringdalen, Eli; Ichihara, K. (2015) Pretreatment unit in ferromanganese production. Proceeding of THE FOURTEENTH INTERNATIONAL FERROALLOYS CONGRESS - Energy efficiency and environmental friendliness are the future of the global Ferroalloy industry.
    Academic chapter/article/Conference paper
  • Tangstad, Merete; Brynjulfsen, Thomas; Ringdalen, Eli. (2014) Reduction of agglomerated manganese ores in a 150 kW pilot scale furnace. Celebrating the Megascale: Proceedings of the Extraction and Processing Division Symposium on Pyrometallurgy in Honor of David G.C. Robertson.
    Academic chapter/article/Conference paper
  • Tangstad, Merete; Ksiazek, Michal Tomasz; Andersen, Jan Erlend. (2014) Zones and materials in the Si furnace. Silicon for the Chemical and Solar Industry XII.
    Academic chapter/article/Conference paper
  • Ksiazek, Michal; Mánik, Tomás; Tangstad, Merete; Ringdalen, Eli. (2013) The thermal diffusivity of raw materials for ferromanganese production. INFACON XIII - THE THIRTEENTH INTERNATIONAL FERROALLOYSCONGRESS - Efficient Technologies in Ferroalloy Industry.
    Academic chapter/article/Conference paper
  • Ladam, Yves; Tangstad, Merete; Ravary, B. (2013) Energy mapping of industrial ferroalloy plants. INFACON XIII - THE THIRTEENTH INTERNATIONAL FERROALLOYSCONGRESS - Efficient Technologies in Ferroalloy Industry.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Tangstad, Merete. (2013) Study of SiMn production in Pilot Scale experiments – Comparing Carajas sinter and Assmang ore. INFACON XIII - THE THIRTEENTH INTERNATIONAL FERROALLOYSCONGRESS - Efficient Technologies in Ferroalloy Industry.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Tangstad, Merete. (2012) Reaction Mechanisms in Carbothermic Production of Silicon, Study of Selected Reactions. International Smelting Technology Symposium: Incorporating the 6th Advances in Sulfide Smelting Symposium.
    Academic chapter/article/Conference paper
  • Bao, Sarina; Kvithyld, Anne; Engh, Thorvald Abel; Tangstad, Merete. (2011) Wettability of Aluminium with SiC and Graphite in Aluminium Filtration. Light Metals 2011.
    Academic chapter/article/Conference paper
  • Ksiazek, Michal Tomasz; Tangstad, Merete; Ringdalen, Eli. (2011) The thermophysical properties of raw materials for ferromanganese production. Southern African Pyrometallurgy 2011 International Conference - SYMPOSIUM SERIES S64.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Tangstad, Merete. (2011) Pyrometallurgical Research at SINTEF and NTNU in Norway. Southern African Pyrometallurgy 2011 International Conference - SYMPOSIUM SERIES S64.
    Academic chapter/article/Conference paper
  • Gaal, Sean; Tangstad, Merete; Ravary, Benjamin; Ringdalen, Eli. (2010) Recycling of sludge from the production of manganese. XXV International Mineral Processing Congress.
    Academic chapter/article/Conference paper
  • Kline, Jeffery; Tangstad, Merete; Tranell, Gabriella. (2010) Effects of calcium oxide on the silicate structure during slag refining of silicon: a Raman spectroscopic study. The Proceedings of the 25th EU PVSEC/WCPEC-5 2010.
    Academic chapter/article/Conference paper
  • Safarian, Jafar; Tangstad, Merete. (2010) Vacuum behaviour of the dissolved elements in molten silicon. Silicon for the Chemical and Solar Industry X.
    Academic chapter/article/Conference paper
  • Sørensen, Bjørn Eske; Gaal, S.; Tangstad, Merete; Ringdalen, Eli; Kononov, Ring; Ostrovski, Oleg. (2010) Properties of manganese ores and their change in the process of calcination. INFACON XII 2010, Proceedings of The twelfth international ferroalloys congress. Sustainable Future. Volume I + II.
    Academic chapter/article/Conference paper
  • Tangstad, Merete; Leroy, Delphine; Ringdalen, Eli. (2010) Behaviour of agglomerates in ferromanganese production. INFACON XII 2010, Proceedings of The twelfth international ferroalloys congress. Sustainable Future. Volume I + II.
    Academic chapter/article/Conference paper
  • Bao, Sarina; Kvithyld, A.; Gaal, S.; Engh, Thorvald Abel; Tangstad, Merete. (2009) Wetting of pure aluminum on filter materials graphite, AlF3 and Al2O3. Light Metals 2009.
    Academic chapter/article/Conference paper
  • Ciftja, Arjan; Øvrelid, E.J.; Tangstad, Merete; Engh, Thorvald Abel; Fejzo, A.. (2009) Settling of particles in molten silicon before directional casting of a solar grade silicon ingot. TMS 2009 Supplemental Proceedings. Volum 2: Materials Characterization, Computation and Modeling.
    Academic chapter/article/Conference paper
  • Gaal, S; Ringdalen, Eli; Vaganov, Danil; Tangstad, Merete. (2009) Melting phenomenon of manganese bearing ores. Molten 2009 : proceedings of the VIII International Conference on Molten Slags, Fluxes & Salts, 18-21 January 2009, Santiago, Chile.
    Academic chapter/article/Conference paper
  • Ringdalen, Eli; Tangstad, Merete; Gaal, S. (2009) Initial melting and Reduction of Ore and Fluxes at the Top of the Coke Bed during SiMn-production. Molten 2009 : proceedings of the VIII International Conference on Molten Slags, Fluxes & Salts, 18-21 January 2009, Santiago, Chile.
    Academic chapter/article/Conference paper
  • Øvrelid, E.J.; Tang, K.; Engh, Thorvald Abel; Tangstad, Merete. (2009) Feedstock. Crystal Growth of Si for Solar Cells.
    Academic chapter/article/Conference paper
  • Ciftja, Arjan; Engh, Thorvald Abel; Tangstad, Merete; Kvithyld, Anne. (2008) Recycling of silicon scrap by filtration. Proceedings of the 18th Workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes.
    Academic chapter/article/Conference paper
  • Ciftja, Arjan; Engh, Thorvald Abel; Tangstad, Merete; Kvithyld, Anne. (2008) Recycling of solar cell silicon scrap by filtration. Proceedings of the 23rd European Photovoltaic Solar Energy Conference.
    Academic chapter/article/Conference paper
  • Ciftja, Arjan; Øvrelid, E. J.; Tangstad, Merete; Engh, Thorvald Abel. (2008) Settling of solid particles in molten silicon as a refining step from metallurgical grade to solar grade silicon. Proceedings of the Third Nordic Symposium for Young Scientists in Metallurgy.
    Academic chapter/article/Conference paper
  • Dalaker, Halvor; Tangstad, Merete. (2008) TIME AND TEMPERATURE DEPENDENCE OF THE SOLUBILITY OF CARBON IN LIQUID SILICON. The Proceedings of the 23rd European Photovoltaic Solar Energy Conference.
    Academic chapter/article/Conference paper
  • Dalaker, Halvor; Tangstad, Merete. (2008) The Solubility Of Carbon In Liquid Silicon And Its Dependence On The Boron Levels. Proceedings of the 18th Workshop on Crystalline Silicon Solar Cells & Modules: Materials and Processes.
    Academic chapter/article/Conference paper
  • Dalaker, Halvor; Tangstad, Merete. (2007) EFFECTIVE DISTRIBUTION COEFFICIENT OF BORON IN MULTICRYSTALLINE SOLAR GRADE SILICON. The Proceedings of the 22nd European Photovoltaic Solar Energy Conference.
    Academic chapter/article/Conference paper
  • Eidem, Per Anders; Tangstad, Merete; Bakken, Jon Arne. (2007) Measurement of material resistivity and contact resistance of metallurgical coke. INFACON XI: Innovations in the Ferro Ally Industry, Volum 2.
    Academic chapter/article/Conference paper
  • Gaal, Sean; Lou, Dechun; Wasbø, Stein; Ravary, Benjamin; Tangstad, Merete. (2007) Melting phenomena in ferromanganese production. INFACON XI: Innovations in the Ferro Ally Industry, Volum 1.
    Academic chapter/article/Conference paper
  • Ishak, R.J.; Tangstad, Merete. (2007) Degree of prereduction without coke consumption in industrial furnaces. INFACON XI: Innovations in the Ferro Ally Industry, Volum 1.
    Academic chapter/article/Conference paper
  • Monsen, Bodil; Tangstad, Merete; Solheim, I.; Syvertsen, M.; Ishak, R.J.; Midtgaard, H.. (2007) Charcoal for manganese alloy production. INFACON XI: Innovations in the Ferro Ally Industry, Volum 1.
    Academic chapter/article/Conference paper
  • Tang, Kai; Tangstad, Merete. (2007) Modeling viscosities of ferromanganese slags. INFACON XI: Innovations in the Ferro Ally Industry, Volum 1.
    Academic chapter/article/Conference paper
  • Tranell, Gabriella; Gaal, Sean; Lu, D.; Tangstad, Merete; Safarian Dastjerdi, Jaafar. (2007) Reduction kinetics of manganese oxide from HC FeMn slags. INFACON XI: Innovations in the Ferro Ally Industry, Volum 1.
    Academic chapter/article/Conference paper
  • Monsen, Bodil Elisabeth; Tangstad, Merete; Midtgaard, Håvard. (2004) Use of Charcoal in Silicomanganese Production. INFACON X 2004, Proceedings of the Tenth International Ferroalloys Congress. Transformation through Technology.
    Academic chapter/article/Conference paper

Report

  • SOLHAUG, Emma; Tangstad, Merete. (2021) Densified biocarbon and the effect of potassium. 2021.
    Report
  • Hustad, Hanne Mette; Tangstad, Merete. (2017) The effect of FexOy on Al2O3 – CaO – SiO2 slag systems. 2017.
    Report
  • Røhmen, Camilla Modell; Tangstad, Merete; Olsen, Sverre E.. (2001) Melting and flow of slag and manganese ore in ferromanganese coke bed. 2001.
    Report
  • Olsen, Sverre E.; Tangstad, Merete. (1999) Smeltereduksjon av HC FeMn-slagg i ASEA induksjonsovn. 1999.
    Report

PRODUKT

  • Tangstad, Merete. (2020) The Norwegian Aluminium Production. NTNU. 2020.
    Multimedia product

Teaching

Courses

  • TMT4155 - Heterogeneous Equilibria and Phase Diagrams
  • TMT4500 - Materials Technology, Specialization Project
  • MT8218 - Advanced Materials Science
  • TMT4306 - Metal Production - Ferroalloys, Iron and Steel
  • MT8201 - Advanced Metal Production

Media

2022

  • Academic lecture
    Hoover, Haley; Głowacki, Meggi; Sævarsdottir, Gudrun; Tangstad, Merete. (2022) Electrical resistivity of charge materials in the Si process and its effect on energy and CO2 emissions. COM2022 ; Montreal. 2022-08-21 - 2022-08-24.
  • Academic lecture
    Hoover, Haley; Głowacki, Meggi; Sævarsdottir, Gudrun; Tangstad, Merete. (2022) Electrical resistivity of charge materials in the Si/FeSi furnace. Silicon for the chemical and solar industry XVI ; Trondheim. 2022-06-14 - 2022-06-16.
  • Academic lecture
    Hoover, Haley; Sævarsdottir, Gudrun; Tangstad, Merete. (2022) Electrical resistivity of transformed carbon materials in the silicon furnace. TMS Furnace Tapping ; Anaheim. 2022-02-27 - 2022-03-03.

2021

  • Academic lecture
    Bublik, Sergey; Gouttebroze, Sylvain; Coudert, Térence; Tangstad, Merete; Einarsrud, Kristian Etienne. (2021) SlagCalculator: A Framework for Slag and Metallurgical Properties. Infacon XIV ; Trondheim. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Folstad, Marit Buhaug; Tangstad, Merete. (2021) SiO2-CaO-Al2O3 slags in Si/FeSi furnaces. Proceedings of the 16th International Ferro-Alloys Congress (INFACON XVI) 2021 . NTNU/SINTEF/FFF; Digitalt. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Folstad, Marit Buhaug; Yu, Han; Wang, Haijuan; Tangstad, Merete. (2021) Formation of slag in Si furnaces. Molten 2021 ; 2021-02-21 - 2021-02-25.
  • Poster
    Haghdani, Shokouh; Tangstad, Merete; Einarsrud, Kristian Etienne. (2021) A Raman-structure model for the viscosity of SiO2-CaO-Al2O3 system. Euromat 2021 . ASMET, FEMS; Online. 2021-09-13 - 2021-09-17.
  • Academic lecture
    Haghdani, Shokouh; Tangstad, Merete; Einarsrud, Kristian Etienne. (2021) An Investigation on the Relationship between Structure and Viscosity of Silicate Slags. Infacon XIV ; 2021-09-27 - 2021-09-29.
  • Academic lecture
    Haraldsson, Hakon; Tesfahunegn, Yonatan; Tangstad, Merete; Saevarsdottir, Gudrun. (2021) Modelling of Electric Arcs for Industrial Applications, a Review. Proceedings of the 16th International Ferro-Alloys Congress (INFACON XVI) 2021 . NTNU/SINTEF/FFF; Digitalt. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Hoover, Haley; Tangstad, Merete; Sævarsdottir, Gudrun A.. (2021) Electrical Resistivity of Partially Transformed Silicon Carbide Made from Coal. INFACON XVI ; Trondheim. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Jesus, Leandro Gustavo de Mendes; Tangstad, Merete. (2021) Prereduction of Manganese Briquettes Produced with Tailing Dam Materials from Urucum/Brazil. Proceedings of the 16th International Ferro-Alloys Congress (INFACON XVI) 2021 . NTNU/SINTEF/FFF; Digitalt. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Jusnes, Karin Fjeldstad; Hjelmseth, Roger; Folstad, Marit Buhaug; Ditlefsen, Nikolai; Tangstad, Merete. (2021) Investigation of Slag Compositions and Possible Relation to Furnace Operation of a FeSi75 Furnace. Proceedings of the 16th International Ferro-Alloys Congress (INFACON XVI) 2021 . NTNU/SINTEF/FFF; Digitalt. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Kaffash, Hamideh; Tangstad, Merete. (2021) The effect of densification on compressive strength of charcoal. Infacon XVI: International Ferro-Alloys Congress . Infacon; Trondheim, Norge. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Ksiazek, Michal Tomasz; Saadieh, Raghed; Gaertner, Heiko; Grådahl, Svend; Sægrov, Bendik; Tangstad, Merete; Valderhaug, Aasgeir; Ringdalen, Eli. (2021) Industrial measurements of the gas and temperature in Si and FeSi production process. Proceedings of the 16th International Ferro-Alloys Congress (INFACON XVI) 2021 . NTNU/SINTEF/FFF; Digitalt. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Larssen, Trine Asklund; Tangstad, Merete. (2021) Off-gas characteristics for varying conditions in the prereduction zone of a ferromanganese furnace – a basis for energy recovery. INFACON XVI . SINTEF/NTNU/FFF; Online. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Ringdalen, Eli; Gjøvik, Jonas Einan; Larssen, Trine Asklund; Tangstad, Merete. (2021) Pretreatment of Manganese Ores in Different Gas-Atmospheres- a Method to Reduce Energy Consumption and Co2 Emissions in Mn-Alloy Production. Proceedings of the 16th International Ferro-Alloys Congress (INFACON XVI) 2021 . NTNU/SINTEF/FFF; Digitalt. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Surup, Gerrit Ralf; Smith, Nicholas Albert; Tangstad, Merete. (2021) The Properties of Carbon Blends in Submerged arc Furnaces. 16th International Ferro-Alloys Congress (INFACON XVI) . SINTEF/NTNU/FFF; Trondheim. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Tangstad, Merete. (2021) Research through academia, research institutions and industry. Euromat 2021 . ASMET, FEMS; Digitalt. 2021-09-13 - 2021-09-17.
  • Academic lecture
    Tangstad, Merete; Ringdalen, Eli; Olsen, Jan Erik; Einarsrud, Kristian Etienne; Myrhaug, Edin Henrik; Reynolds, Quinn. (2021) Conceptual Model Of Tapping Mechanisms In FeSi/Si Furnaces. Proceedings of the 16th International Ferro-Alloys Congress (INFACON XVI) 2021 . NTNU/SINTEF/FFF; Digitalt. 2021-09-27 - 2021-09-29.
  • Academic lecture
    Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Saevarsdottir, Gudrun. (2021) The Effect of Electrode Movements on Inductive Reactance in a Submerged Arc Furnace. Proceedings of the 16th International Ferro-Alloys Congress (INFACON XVI) 2021 . NTNU/SINTEF/FFF; Digitalt. 2021-09-27 - 2021-09-29.

2020

  • Lecture
    Broggi, Andrea; Tangstad, Merete; Ringdalen, Eli. (2020) Empirical analysis of clogging of SiC charges: effect of condensation of SiO and CO. Silicon for the Chemical and Solar Industry XV ; 2020-06-16.
  • Lecture
    Canaguier, Vincent Yves; Tangstad, Merete. (2020) Foaming of silicomanganese slags, a role of sulfur?. Nasjonal Konferanse for Materialteknologi . NTNU; Norsk Materialteknisk Selskap; Norsk Metallografisk Forening; Norsk Korrosjonsteknisk Forening; Online. 2020-12-02 - 2020-12-03.
  • Lecture
    Gjøvik, Jonas Einan; Mukono, Tichaona; Ringdalen, Eli; Wallin, Maria; Tangstad, Merete. (2020) Pilot scale production of high carbon ferromanganese. Nasjonal Konferanse for Materialteknologi . NTNU; Trondheim. 2020-12-02 - 2020-12-03.
  • Academic lecture
    Hoover, Haley; Pedersen, Tommy Andre; Sævarsdóttir, Gudrun A.; Tangstad, Merete. (2020) Bulk Resistivity of SiC and Carbon Materials in the Silicon Furnace. Silicon for the Chemical and Solar Industry XV . NTNU; Trondheim. 2020-06-15 - 2020-06-18.
  • Academic lecture
    Kaffash, Hamideh; Tangstad, Merete. (2020) Densification and CO2 reactivity of charcoal. Nasjonalkonferanse Trondheim 2020 ; 2020-12-02 - 2020-12-03.
  • Academic lecture
    Larssen, Trine Asklund; Tangstad, Merete. (2020) Prereduction of manganese ores. Nasjonal konferanse i materialteknologi . NTNU; Online. 2020-12-02 - 2020-12-03.
  • Lecture
    Tangstad, Merete. (2020) Fagdag Controlled Tapping. Fagdag mottagende industri . NTNU; Trondheim. 2020-08-19.
  • Lecture
    Tangstad, Merete. (2020) Operational problems - condensation reactions, slag and SiC-accumulation. CRU - Silicon market Virtual Forum 2020 . CRU; Digitalt. 2020-11-12 - 2020-11-13.

2019

  • Academic lecture
    Aarnæs, Trygve Storm; Tangstad, Merete. (2019) EFFECT OF H2 ON SiO AND SiC FORMATION. The 2nd European Conference on Silicon and Silica Based Materials . European Conference on Silicon and Silica Based Materials; Hotel Palota - Lillafüred, Erzsébet sétány 1.. 2019-10-06 - 2019-10-10.
  • Poster
    Broggi, Andrea; Ringdalen, Eli; Tangstad, Merete. (2019) Evolution of SiOx shell layers on SiC-SiOx core-shell nanowires. International Conference on Silicon Carbide and Related Materials ; Kyoto. 2019-09-29 - 2019-10-04.
  • Academic lecture
    Bublik, Sergey; Bao, Sarina; Tangstad, Merete; Einarsrud, Kristian Etienne. (2019) Slag-metal interactions in the FeMn tapping process: Interfacial properties and wetting. 2019 Liquid Metal Processing & Casting Conference . TMS; Birmingham. 2019-09-08 - 2019-09-11.
  • Academic lecture
    Jusnes, Karin Fjeldstad; Tangstad, Merete; Ringdalen, Eli. (2019) The effects of cristobalite formation on disintegration of quartz. The 1st European Conferance on Silica and Silica Based Materials ; Miskolc. 2019-10-07 - 2019-10-10.
  • Lecture
    Kaffash, Hamideh; Tangstad, Merete. (2019) Dissolution rate of carbon in liquid metal. LMPC 2019 ; 2019-09-08 - 2019-09-11.
  • Poster
    Larssen, Trine Asklund; Tangstad, Merete; Kero, Ida. (2019) Experimental study of the initial stages of manganese ferroalloy prereduction. HighEFF Annual Consortium Meeting 2019 . SINTEF Energi; Trondheim. 2019-05-08 - 2019-05-09.
  • Academic lecture
    Tangstad, Merete. (2019) General background pretreatment of Mn-ores. Pretreatment of mn ores ; 2019-02-11 - 2019-02-11.
  • Interview
    Tangstad, Merete. (2019) Ny metode for å lagre sol og vind. Gemini.no [Fagblad]. 2019-05-06.

2018

  • Lecture
    Broggi, Andrea; Tangstad, Merete. (2018) Condensation of SiO and CO in silicon production - a literature review. Peter Hayes Symposium Pyrometallurgical processing - Extraction 2018 . TMS; Ottawa. 2018-08-26 - 2018-08-29.
  • Lecture
    Broggi, Andrea; Tangstad, Merete. (2018) Small scale experiments simulating condensation of SiO and CO in silicon furnaces. Silicon for the Chemical and Solar industry XIV . NTNU; Svolvær. 2018-06-11 - 2018-06-14.
  • Academic lecture
    Folstad, Marit Buhaug; Tangstad, Merete; Ringdalen, Eli; Fredriksli, R; Dalum, Synnøve. (2018) Tapping procedures in silicon production, and the role of female tapping operators. Tapping Conference . SAIMM; Kruger. 2018-10-14 - 2018-10-17.
  • Academic lecture
    Jayakumari, Sethulakshmy; Tangstad, Merete. (2018) Formation of elemental silicon in beta-SiC particles. Conference ; 2018-06-11 - 2018-06-14.
  • Academic lecture
    Jayakumari, Sethulakshmy; Tangstad, Merete. (2018) Silicon carbide formation from coal or charcoal during Si and FeSi process. Conference ; Cape town. 2018-02-25 - 2018-02-28.
  • Academic lecture
    Jusnes, Karin Fjeldstad; Tangstad, Merete; Ringdalen, Eli. (2018) Cracks, Disintegration and Phases Transformations in Quartz. Silicon for the Chemical and Solar Industry XIV . NTNU; Svolvær. 2018-06-11 - 2018-06-14.
  • Academic lecture
    Jusnes, Karin Fjeldstad; Tangstad, Merete; Ringdalen, Eli. (2018) Phase Transformations from Quartz to Cristobalite. Extraction 2018 - Hays symposium . TMS, SME, MetSoc; Ottawa. 2018-08-26 - 2018-08-29.
  • Academic lecture
    Jusnes, Karin Fjeldstad; Tangstad, Merete; Ringdalen, Eli. (2018) Shock Heating of Quartz used in Silicon and Ferrosilicon Production. Infacon XV ; Cape Town. 2018-02-25 - 2018-02-28.
  • Lecture
    Kaffash, Hamideh; Tangstad, Merete. (2018) Dissolution kinetics of carbon in Fe-Mn alloys. Infacon 2018 ; Cape town. 2018-02-25 - 2018-02-28.
  • Lecture
    Kaffash, Hamideh; Tangstad, Merete. (2018) Dissolution of graphite in iron manganese alloys. Extraction 2018 ; Ottawa. 2018-08-26 - 2018-08-29.
  • Lecture
    Ksiazek, Michal Tomasz; Tangstad, Merete; Ringdalen, Eli. (2018) The rapid Si-furnace excavation - an unique chance to investigate the interior of the furnace. INFACON XV ; Cape Town. 2018-02-25 - 2018-02-28.
  • Academic lecture
    Ksiazek, Michal Tomasz; Tangstad, Merete; Ringdalen, Eli; Grådahl, Svend; Hustad, Hanne Mette; Holtan, Joakim; Nymoen, Andreas Biseth; Kaukonen, Saku. (2018) Measurement of metal temperature during tapping of an industrial FeSi furnace. Furnace tapping conference ; Kruger National Park. 2018-10-14 - 2018-10-17.
  • Academic lecture
    Larssen, Trine Asklund; Tangstad, Merete; Kero, Ida. (2018) Energy Distribution in HC FeMn and SiMn - Energy vs Exergy Analyses. Infacon XV ; Cape Town. 2018-02-25 - 2018-02-28.
  • Academic lecture
    Ngoy, Didier; Kalenga, Michel; Tangstad, Merete. (2018) Reduction rate of MnO from two different charge compositions in ferromanganese production process. Infacon 15 . SAIMM; Cape Town. 2018-02-25 - 2018-02-28.
  • Academic lecture
    Polkowski, Wojciech; Sobczak, Natalia; Tangstad, Merete; Safarian, Jafar; Jiao, Jianmeng; Grorud, Bettina. (2018) Silicon and silicon-boron alloys as phase change materials in thermal storage units. Silicon for the Chemical and Solar Industry XIV ; Svolvær. 2018-06-11 - 2018-06-14.
  • Lecture
    Steenkamp, Joalet; Tangstad, Merete. (2018) Overview of Furnace Tapping research at MINTEK. Norwegian Adventure . NTNU (IMA); NTNU. 2018-05-18 - 2018-05-18.
  • Lecture
    Sævarsdóttir, Gudrun A.; Tangstad, Merete. (2018) Electrical currentpaths in the Si furnace. Controlled tapping møte ; 2018-09-19 - 2018-09-19.
  • Lecture
    Tangstad, Merete. (2018) Obligations and privileges of a PhD student in the SiManTi student group. HighEFF Annual Consortium Meeting 2018 . SINTEF Energi AS; Trondheim. 2018-05-02.
  • Academic lecture
    Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Saevarsdottir, Gudrun. (2018) The Effect of Pitch Circle Diameter of Electrodes on Current Distributions in Submerged Arc Furnace. 2018 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) . IEEE; Reykjavik. 2018-08-08 - 2018-08-10.
  • Academic lecture
    van Staden, Yolindi; Beukes, Paul; van Zyl, Peter; Ringdalen, Eli; Tangstad, Merete; Kleynhans, Ernst L.J.; Bunt, John Reginald. (2018) Dam-ring formation in chromite pre-reduction rotary kilns – influence of pulverised carbonaceous fuel and ore composition. Infacon 15 . SAIMM; Cape Town. 2018-02-25 - 2018-02-28.

2017

  • Lecture
    Andresen, Birger; Tangstad, Merete. (2017) Industrial theories and challenges (Wacker). Controlled Tapping seminar . NTNU (IMA); Trondheim. 2017-10-11 - 2017-10-12.
  • Lecture
    Banda, Wesley; Tangstad, Merete. (2017) Chemical wear of carbon-based refractory material by SiMn alloy. Norwegian Adventure . NTNU (IMA); NTNU. 2017-05-18 - 2017-05-18.
  • Lecture
    Beukes, Paul; Tangstad, Merete. (2017) Carbon reduction materials in Cr-production. Carbon course . NTNU (IMA); NTNU. 2017-03-27 - 2017-03-28.
  • Lecture
    Fatnes, Eirik; Tangstad, Merete. (2017) Industrial theories and challenges (Eramet). Controlled Tapping seminar . NTNU (IMA); Trondheim. 2017-10-11 - 2017-10-12.
  • Lecture
    Holtan, Joakim; Tangstad, Merete. (2017) Industrial theories and challenges. Controlled Tapping seminar . NTNU (IMA); Trondheim. 2017-10-11 - 2017-10-12.
  • Lecture
    Kim, Pyunghwa; Larssen, Trine Asklund; Tangstad, Merete. (2017) EMPIRICAL ACTIVATION ENGERGIES OF MnO AND SiO2 REDUCTION IN SiMn SLAGS BETWEEN 1500 AND 1650 °C. TMS 17 ; San Diego, CA, USA. 2017-02-26 - 2017-03-03.
  • Poster
    Kim, Pyunghwa; Tangstad, Merete. (2017) Reaction Mechanisms in the SiMn Process: Rate Models. SFI Spring meeting, 2017 ; 2017-04-25 - 2017-04-26.
  • Lecture
    Ksiazek, Michal Tomasz; Ringdalen, Eli; Tangstad, Merete. (2017) Excavations of the Si/FeSi furnaces: comparison of furnace 1 and 4 in Wacker. SFI Høstmøte 2017 ; 2017-11-07 - 2017-11-08.
  • Lecture
    Ksiazek, Michal Tomasz; Ringdalen, Eli; Tangstad, Merete. (2017) Furnace excavations:Comparison of results from FeSi 75% and FeSi 50%. Meeting with industry (Finnfjord) ; Finnsnes. 2017-01-16 - 2017-01-18.
  • Lecture
    Letsoalo, Mmaphela; Tangstad, Merete. (2017) Characterization of tap-hole clay. Norwegian Adventure . NTNU (IMA); NTNU. 2017-05-18.
  • Lecture
    Li, Xiang; Tangstad, Merete. (2017) Production of SiMn-Alloys by Natural Gas and Carbon Black. Applications of Process Engineering Principles in Materials Processing, Energy and Environmental Technologies, TMS 2017 ; San Diego. 2017-02-25 - 2017-03-02.
  • Lecture
    Matinde, Elias; Tangstad, Merete. (2017) Overview of pyrometallurgy research at WITS. Norwegian Adventure . NTNU (IMA); NTNU. 2017-05-18 - 2017-05-18.
  • Lecture
    Myrhaug, Edin; Tangstad, Merete. (2017) Lining and taphole concepts. Controlled Tapping seminar . NTNU (IMA); Trondheim. 2017-10-11 - 2017-10-12.
  • Lecture
    Ngoy, Didier; Tangstad, Merete. (2017) Reduction behaviors of South Africa Mn ores in FeMn Process. Norwegian Adventure . NTNU (IMA); NTNU. 2017-05-18 - 2017-05-18.
  • Lecture
    Reynolds, Quinn; Tangstad, Merete. (2017) Related work at Mintek. Controlled Tapping seminar . NTNU (IMA); Trondheim. 2017-10-11 - 2017-10-12.
  • Lecture
    Segapela, Nomsi; Tangstad, Merete. (2017) Study potential for tap-hole clay erosion using dynamic laboratory-scale tests. Norwegian Adventure . NTNU (IMA); NTNU. 2017-05-18 - 2017-05-18.
  • Lecture
    Steenkamp, Joalet Dalene; Tangstad, Merete. (2017) Summary of tapping conference. Controlled Tapping seminar . NTNU (IMA); Trondheim. 2017-10-11 - 2017-10-12.
  • Lecture
    Steenkamp, Joalet; Tangstad, Merete. (2017) Carbon materials. TMT4306 . NTNU (IMA); NTNU. 2017-09-04 - 2017-09-04.
  • Lecture
    Strumpfer, Hendrik; Tangstad, Merete. (2017) Industrial theories and challenges (Glencore). Controlled Tapping seminar . NTNU (IMA); Trondheim. 2017-10-11 - 2017-10-12.
  • Lecture
    Tangstad, Merete. (2017) Carbon materials in Mn-production. Carbon course . NTNU (IMA); NTNU. 2017-03-27 - 2017-03-28.
  • Academic lecture
    Tangstad, Merete; Hustad, Hanne Mette. (2017) The effect of FexOy on Al2O3 – CaO – SiO2 slag systems. International student seminar 2017 . KTH; Stockholm. 2017-11-22 - 2017-11-23.
  • Academic lecture
    Tangstad, Merete; Ksiazek, Michal Tomasz; Ringdalen, Eli. (2017) Excavation of Si and FeSi furnaces. Controlled Tapping seminar . NTNU (IMA); Trondheim. 2017-10-11 - 2017-10-12.
  • Lecture
    Thobadi, Itumeleng; Tangstad, Merete. (2017) Study potential for tap-hole clay corrosion by FeCr alloy and slag using static wear tests. Norwegian Adventure . NTNU (IMA); NTNU. 2017-05-18 - 2017-05-18.

2016

  • Academic lecture
    Kim, Pyunghwa; Holtan, Joakim; Tangstad, Merete. (2016) REDUCTION BEHAVIOR OF ASSMANG AND COMILOG ORE IN THE SiMn PROCESS. TMS: MOLTEN 16 . TMS; Seattle, Washinton. 2016-05-21 - 2016-05-25.
  • Lecture
    Ksiazek, Michal Tomasz; Ringdalen, Eli; Tangstad, Merete. (2016) FIVE FURNACES FIVE DIFFERENT STORIES. Silicon for the chemical and solar industry XIII ; 2016-06-13 - 2016-06-16.
  • Lecture
    Ksiazek, Michal Tomasz; Tangstad, Merete; Ringdalen, Eli. (2016) Five furnaces five different stories. Silicon for the chemical and solar industry XIII . NTNU; Kristiansand. 2016-06-13.
  • Lecture
    Ksiazek, Michal Tomasz; Tangstad, Merete; Ringdalen, Eli. (2016) Zones and Reactions in the Si Furnace. SiManTi Seminar in Oxford ; 2016-09-12 - 2016-09-13.
  • Poster
    Li, Fei; Tangstad, Merete. (2016) Behavior of Quartz and Carbon Black Pellets at Elevated Temperatures. 2016 EPD Congress,TMS2016 ; Nashville. 2016-02-15 - 2016-02-18.
  • Academic lecture
    Li, Fei; Tangstad, Merete. (2016) Use of agglomerated raw materials in Si production. Silicon for the Chemical and Solar Industry XIII . NTNU; Kristiansand. 2016-06-13 - 2016-06-16.
  • Academic lecture
    Ringdalen, Eli; Tangstad, Merete. (2016) Phase transformations in quartz and it's effect on furnace operation. Silicon for the chemical and solar industry, XIII, Norway 2016 ; Kristiansand. 2016-06-14 - 2016-06-16.
  • Academic lecture
    Ringdalen, Eli; Tangstad, Merete. (2016) Softening and melting of SiO2, an important parameter for reactions with quartz in Si-production. The 10th InternationalConference on Molten Slags, Fluxes and Salts (MOLTEN16) . TMS (The Minerals, Metals & Materials Society); Seattle. 2016-05-22 - 2016-05-25.
  • Academic lecture
    Ringdalen, Eli; Tangstad, Merete; Safarian, Jafar; Valderhaug, Aasgeir Mikael. (2016) Interaction of molten silica with silicon carbide in silicon process. The 10th InternationalConference on Molten Slags, Fluxes and Salts (MOLTEN16) ; Seattle. 2016-05-23 - 2016-05-26.

2015

  • Academic lecture
    Jayakumari, Sethulakshmy; Tangstad, Merete. (2015) Carbon Materials for Silicomanganese reduction. INFACON XIV ; Kiev. 2015-06-01 - 2015-06-04.
  • Academic lecture
    Li, Fei; Tangstad, Merete; Solheim, Ingeborg. (2015) Quartz and Carbon Black Pellets for Silicon Production. The Fourteenth International Ferroalloys Congress(Infacon XIV) ; 2015-05-31 - 2015-06-04.
  • Academic lecture
    Ringdalen, Eli; Tangstad, Merete; Brynjulfsen, Thomas. (2015) Melting Behaviour of Mn sources - effect on furnace performance. INFACON 14 . INFACON; Kiev. 2015-05-31 - 2015-07-04.
  • Academic lecture
    Skjeldestad, Aslak; Tangstad, Merete; Lindstad, Lars; Larsen, Bjørnar. (2015) Temperature Profiles in Søderberg Electrodes. INFACON XIV ; Kiev. 2015-06-01 - 2015-06-04.
  • Academic lecture
    Tangstad, Merete; Ringdalen, Eli; Ichihara, K. (2015) Pretreatment unit in ferromanganese production. INFACON 14 . Infacon; Kiev. 2015-05-31 - 2015-06-04.

2014

  • Academic lecture
    Jakobsson, Lars Klemet; Tangstad, Merete. (2014) Distribution of Boron, Calcium and Aluminium between Silicon and CaO-Al2O3-SiO2 Slags. TMS 2014 . The Minerals, Metals & Materials Society (TMS); San Diego, California. 2014-02-16 - 2014-02-20.
  • Poster
    Jakobsson, Lars Klemet; Tangstad, Merete. (2014) Distribution of boron between silicon and CaO-MgO-Al2O3-SiO2 slags at 1600 °C. Symposium on Advances in Computational Thermodynamics . McGill University and École Polytechnique; Fairmont Le Château Montebello, Québec. 2014-08-17 - 2014-08-19.
  • Academic lecture
    Sortland, Øyvind Sunde; Tangstad, Merete. (2014) Boron Removal from Silicon Melts by H2O/H2 Gas Blowing - Gas-phase Mass Transfer. TMS 2014 143rd ANNUAL MEETING & EXHIBITION ; 2014-02-16 - 2014-02-20.
  • Academic lecture
    Sortland, Øyvind Sunde; Tangstad, Merete. (2014) Boron Removal from Silicon Melts by H2O/H2 Gas Blowing - Mass Transfer in Melt and Gas. Nasjonal Konferanse for Materialteknologi NMS+NMF Sommermøte . Norsk Materialteknisk Selskap, Norsk Metallografisk Forening; 2014-06-05 - 2014-06-05.
  • Academic lecture
    Sortland, Øyvind Sunde; Tangstad, Merete. (2014) Boron Removal from Silicon Melts by H2O/H2 Gas Blowing - Steam Supply and Boron Removal. Norwegian Solar Cell Conference 2014 ; 2014-05-12 - 2014-05-13.
  • Academic lecture
    Tangstad, Merete; Ksiazek, Michal Tomasz; Andersen, Jan Erlend. (2014) Zones and materials in the Si furnace. Silicon for the chemical and solar industry . NTNU; Trondheim. 2014-06-24 - 2014-06-27.
  • Academic lecture
    Vangskåsen, Jørund; Tangstad, Merete. (2014) Condensate in the metallurgical silicon process-reaction mechanisms. Infacon XIII . Kazhakstan ferroalloy; Almati. 2014-06-04 - 2014-06-07.

2013

  • Academic lecture
    Bao, Sarina; Tangstad, Merete; Tang, Kai; Ringdalen, Eli. (2013) Production of SiO Gas in the Si Process. The 13th International Ferroalloys Congress ; 2013-06-09 - 2013-06-12.
  • Academic lecture
    Brynjulfsen, Thomas; Tangstad, Merete. (2013) Melting and Reduction of Manganese Sinter and Pellets. INFACON XIII ; Almaty. 2013-06-09 - 2013-06-12.
  • Academic lecture
    Jakobsson, Lars Klemet; Tangstad, Merete. (2013) Boron and calcium refining of ferrosilicon by slag treatment. INFACON XIII . Abishev Chemical-Metallurgical Institute; Almaty. 2013-06-09 - 2013-06-12.
  • Academic lecture
    Jakobsson, Lars Klemet; Tangstad, Merete. (2013) Distribution of Boron between Silicon and CaO-MgO-SiO2 Slags. TMS 2013 . The Minerals, Metals and Materials Society; San Antonio. 2013-03-03 - 2013-03-07.
  • Academic lecture
    Kalenga, Michel; Xiaowei, P; Tangstad, Merete. (2013) Manganese Alloys Production: Impact of Chemical Compositions of Raw Materials on the Energy and Materials Balance. INFACON XIII ; Almaty. 2013-06-09 - 2013-06-12.
  • Academic lecture
    Ksiazek, Michal; Mánik, Tomás; Tangstad, Merete; Ringdalen, Eli. (2013) The thermal diffusivity of raw materials for ferromanganese production. INFACON XIII, The 13th. International Ferroalloys Congress ; Almaty. 2013-06-09 - 2013-06-12.
  • Poster
    Ladam, Yves; Tangstad, Merete; Ravary, Benjamin. (2013) ENERGY MAPPING OF INDUSTRIAL FERROALLOY PLANTS. International ferroalloy congress, INFACON XIII ; 2013-06-09 - 2013-06-12.
  • Academic lecture
    Maroufi, Samane; Ciezki, George; Tangstad, Merete; Jahanshani, Sharif; Ostrovski, Oleg. (2013) Carbothermal reduction of high-silicon ironstone ore. INFACON XIII ; 2013-06-09 - 2013-06-12.
  • Academic lecture
    Maroufi, Samane; Ciezki, George; Tangstad, Merete; Jahanshani, Sharif; Ostrovski, Oleg. (2013) Characterisation and reduction of high-silicon ironstone in CO gas. INFACON XIII ; 2013-06-09 - 2013-06-12.
  • Academic lecture
    Ringdalen, Eli; Tangstad, Merete. (2013) Quarts-cristobalite transformation and its effect on reaction in Si and FeSi production. Infacon XIII . Kazhakstan Ferroalloy; AlmaAti. 2013-06-04 - 2014-06-07.
  • Academic lecture
    Ringdalen, Eli; Tangstad, Merete. (2013) Study of SiMn production in a pilot scale furnace - comparing Carajas sinter and Assmang ore. Infacon XIII ; 2013-06-09 - 2013-06-12.
  • Academic lecture
    Slizovskiy, Dmitry; Tangstad, Merete. (2013) Agglomeration of charge in ferromanganese submerged arc furnaces. INFACON XIII ; 2013-06-09 - 2013-06-12.
  • Academic lecture
    Sortland, Øyvind Sunde; Tangstad, Merete. (2013) Removal of Boron from Silicon by Reactive Gas Refining. TMS 2013 142nd ANNUAL MEETING & EXHIBITION ; 2013-03-03 - 2013-03-07.
  • Academic lecture
    Steenkamp, Joalet; Tangstad, Merete; Pistorius, Chris; Mølnås, Håvard; Muller, Jaques. (2013) CORROSION OF TAPHOLE CARBON REFRACTORY BY CaO-MnO-SiO2-Al2O3-MgO SLAG FROM A SiMn PRODUCTION FURNACE. International ferroalloy congress, INFACON XIII ; 2013-06-09 - 2013-06-12.
  • Academic lecture
    Tang, Kai; Krystad, Egil; Tranell, Gabriella; Tangstad, Merete. (2013) Boron and Phosphors Distribution Equilibria among the Molten Si, Slag and Metal Phases. 2013 TMS Annual Meeting & Exhibition ; San Antoine, Texas. 2013-03-03 - 2013-03-07.
  • Academic lecture
    Tang, Kai; Ringdalen, Eli; Tangstad, Merete; Olsen, Sverre E.. (2013) Potassium Distribution between Liquid Mn-Fe-C Alloys and MnO-SiO2-CaO Slags. 13th International Ferroalloys Congress ; Almaty. 2013-06-09 - 2013-06-12.
  • Popular scientific lecture
    Tangstad, Merete. (2013) Fra sand til solceller. Researchers Night . NTNU; Trondheim. 2013-09-27 - 2013-09-27.
  • Academic lecture
    Vangskaasen, Jørund; Tangstad, Merete. (2013) Condensate production in the silicon process. International ferroalloy conference, INFACON XIII ; 2013-06-09 - 2013-06-12.
  • Academic lecture
    Visser, Marius; Smith, Herman; Tangstad, Merete; Ringdalen, Eli. (2013) PROPERTIES OF NCWANENG- AND GLORIA- ORE IN THE PRODUCTION OF FeMn ALLOYS. International ferroalloy conference, Infacon XIII ; 2013-06-09 - 2013-06-12.

2012

  • Academic lecture
    Bao, Sarina; Syvertsen, Martin; Rasch, Bjørn; Kvithyld, Anne; Engh, Thorvald Abel; Tangstad, Merete. (2012) Al2O3 and SiC Ceramic Foam Filtration of Aluminium. Nasjonal Konferanse for Materialteknologi . Norsk Metallurgisk Selskap; Trondheim. 2012-05-09 - 2012-05-10.
  • Poster
    Jakobsson, Lars Klemet; Tangstad, Merete. (2012) Determination of Boron in Silicon and Slags by HR-ICP-MS. Renewable Energy Research Conference 2012 ; Trondheim. 2012-04-16 - 2012-04-18.
  • Academic lecture
    Jakobsson, Lars Klemet; Tangstad, Merete. (2012) Distribution of boron and calcium between silicon and calcium silicate slags. TMS 2012 ; Orlando. 2012-03-11 - 2012-03-15.
  • Academic lecture
    Ringdalen, Eli; Tangstad, Merete. (2012) Reaction Mechanisms in Carbothermic Production of Silicon, Study of Selected Reactions. TMS 2012 International Smelting Technology Symposium: Incorporating the 6th Advances in Sulphide Smelting Symposium . TMS; Orlando. 2012-03-11 - 2012-03-15.
  • Academic lecture
    Safarian, Jafar; Kolbeinsen, Leiv; Tangstad, Merete. (2012) Thermodynamic Properties of the Silicon Binary Melts. TMS 2012 Annual Meeting & Exhibition! . TMS - The Mineral, Metals & Materials Society; Swan and Dolphin Resort • Orlando, Florida. 2012-03-11 - 2012-03-15.
  • Academic lecture
    Sortland, Øyvind Sunde; Tangstad, Merete. (2012) B Removal from Si by Reactive Gas Refining. Nasjonal Konferanse for Materialteknologi . Norsk Metallurgisk Selskap; 2012-05-09 - 2012-05-10.
  • Academic lecture
    Sortland, Øyvind Sunde; Tangstad, Merete. (2012) Prospects of Using Syngas for B Removal from Si. UMG-Silicon seminar ; Trondheim-Tromsø, Norway. 2012-04-24 - 2012-04-26.
  • Poster
    Tang, Kai; Ringdalen, Eli; Tangstad, Merete; Olsen, Sverre E.. (2012) Potassium Distribution between Liquid Mn-Fe-C Alloys and MnO-SiO2-CaO Slags. 13th International Ferroalloys Congress ; Almaty. 2012-06-09 - 2012-06-12.
  • Academic lecture
    Tangstad, Merete; Ringdalen, Eli. (2012) Ferroalloy Research in Norway - Cooperation between Academia and Industry. TMS 2012 nternational Smelting Technology Symposium: Incorporating the 6th Advances in Sulphide Smelting Symposium . TMS; Orlando. 2012-03-11 - 2012-03-15.

2011

  • Academic lecture
    Bao, Sarina; Engh, Thorvald Abel; Tangstad, Merete. (2011) Ceramic Foam Filtration (CFF) Efficiency Calculation Regarding Boundary Layer. PHD Al Seminar in IMT, NTNU . Department of Materials Science and Engineering, Norwegian U; Trondheim. 2011-01-20 - 2011-01-20.
  • Academic lecture
    Jakobsson, Lars Klemet; Tangstad, Merete. (2011) Distribution of boron between molten silicon and calcium silicate slags. Fray International Symposium ; 2011-11-27 - 2011-12-01.
  • Academic lecture
    Ksiazek, Michal Tomasz; Tangstad, Merete; Ringdalen, Eli. (2011) The thermophysical properties of raw materials for ferromanganese production. Southern African Pyrometallurgy 2011 International Conference . The Southern African Institute of Mining and Metallurgy; Johannesburg. 2011-03-06 - 2011-03-09.
  • Academic lecture
    Ringdalen, Eli; Tangstad, Merete. (2011) Pyrometallurgical Research at SINTEF and NTNU in Norway. Southern African Pyrometallurgy 2011 International Conference . The Southern African Institute of Mining and Metallurgy; Johannesburg. 2011-09-06 - 2011-09-09.
  • Lecture
    Ringdalen, Eli; Tangstad, Merete. (2011) ROMA Resource Optimization and Recovery in the Material Industry - a Norwegian cooperation project. EOROMAT 2011: European Congress and Exhibition on Advanced Materials and Processes . FFC Paris; Montpellier. 2011-09-12 - 2011-09-15.
  • Academic lecture
    Safarian, Jafar; Xakalashe, Bhole; Tangstad, Merete. (2011) Vacuum removal of the impurities from different silicon melts. 26th European Photovoltaic Solar Energy Conference and Exhibition ; Hamburg. 2011-09-05 - 2011-09-09.
  • Academic lecture
    Xakalashe, Bhole; Tangstad, Merete. (2011) Silicon processing: from quartz to crystalline silicon solar cells. Southern African Pyrometallurgy 2011 ; Johannesburg. 2011-03-06 - 2011-03-09.

2010

  • Academic lecture
    Bao, Sarina; Tangstad, Merete; Engh, Thorvald Abel. (2010) Wetting of Aluminium with Filter Materials. Nasjonal Konferanse for Materialteknologi . Norsk Metallurgisk Selskap; Oslo. 2010-06-03 - 2012-06-04.
  • Academic lecture
    Eidem, P.A.; Tangstad, Merete; Bakken, Jon Arne; Ishak, R.. (2010) Influence of coke particle size on the electrical resistivity of cokebeds. Infacon XII . Outotec; Helsinki. 2010-06-06 - 2010-06-09.
  • Academic lecture
    Gaal, S; Tangstad, Merete; Ravary, Benjamin; Ringdalen, Eli. (2010) Recycling of sludge from the production of manganese;. XXV International Mineral Processing Congress (IMPC 2010) . Australasian Institute of Mining and Metallurgy ( AusIMM ); Brisbane. 2010-09-06 - 2010-09-09.
  • Poster
    Jakobsson, Lars Klemet; Tangstad, Merete. (2010) Distribution of Boron between Molten Silicon and Slag. Renewable Research Conference 2010 . Senter for fornybar energi; NTNU. 2010-06-07 - 2010-06-08.
  • Academic lecture
    Safarian, Jafar; Tangstad, Merete. (2010) Slag-Carbon Reactivity. INFACON XII ; 2010-06-06 - 2010-06-09.
  • Academic lecture
    Safarian, Jafar; Tangstad, Merete. (2010) Vacuum behavior of the dissolved elements in molten silicon. Silicon for the Chemical and Solar Industry X . NTNU; Ålesund-Geiranger. 2010-06-28 - 2010-07-02.
  • Academic lecture
    Slizowskiy, Dmitriy; Tangstad, Merete. (2010) The effect of potassium and zinc circulation on agglomeration of a charge in SAF. Infacon XII ; Helsinki. 2010-06-06 - 2010-06-09.
  • Academic lecture
    Sørensen, Bjørn Eske; Gaal, S.; Tangstad, Merete; Ringdalen, Eli; Kononov, Ring; Ostrovski, Oleg. (2010) Properties of manganese ores and their change in the process of calcination. Infacon XII . Outotec; 2010-06-06 - 2010-06-09.
  • Poster
    Tangstad, Merete; Ksiazek, Michal; Andersen, Vegar; Ringdalen, Eli. (2010) Small scale laboratory experiments simulating an industrial silicon furnace. Infacon XII . Infacon XII; Helsinki. 2010-06-06 - 2010-06-09.
  • Academic lecture
    Tangstad, Merete; Leroy, Delphine; Ringdalen, Eli. (2010) Behavior of agglomerates in ferromanganese production. Infacon XII . Outotec; helsinki. 2010-06-06 - 2010-06-09.
  • Academic lecture
    Zhang, Song-sheng; Safarian, Jafar; Seok, Seongho; Kim, Sungwook; Tangstad, Merete; Luo, Xue-tao. (2010) Elimination of Phosphorus from Si-P system by induction refining at a finite reduced pressure. The 2010 International Symposium on metallurgical purification technologies of SOG-Si ; 2010-09-12 - 2010-09-15.
  • Academic lecture
    Zheng, Song-sheng; Engh, Thorvald Abel; Tangstad, Merete; Luo, Xue-tao. (2010) A Simulation of Phosphorus Removal from Molten Silicon by Induction Vacuum Refining. Renewable Energy Research Conference . NTNU/SINTEF; Trondheim. 2010-06-07 - 2010-06-08.

2009

  • Academic lecture
    Gaal, S; Ringdalen, Eli; Vaganov, Danil; Tangstad, Merete. (2009) Melting phenomenon of manganese bearing ores. Molten 2009; VIII INternational Conference on Molten Slags, fluxes and salts . Gecamin; Santiago. 2009-01-18 - 2009-01-21.
  • Academic lecture
    Ringdalen, Eli; Tangstad, Merete; Gaal, S. (2009) Initial melting and Reduction of Ore and Fluxes at the Top of the Coke Bed during SiMn-production. Molten 2009: The VIII International Conference on Molten slags, fluxes and salts . Gecamin; Santiago. 2009-01-18 - 2009-01-21.
  • Academic lecture
    Safarian, Jafar; Tangstad, Merete; Gaal, Sean. (2009) Thermal analysis of silicon-phosphorus alloys at elevated temperatures. 3rd International workshop on Crystalline Silicon Solar Celles . SINTEF/NTNU; Trondheim. 2009-06-03 - 2009-06-05.

2008

  • Poster
    Dalaker, Halvor; Tangstad, Merete. (2008) TIME AND TEMPERATURE DEPENDENCE OF THE SOLUBILITY OF CARBON IN LIQUID SILICON. 23rd EU-PVSEC ; 2008-09-01 - 2008-09-05.
  • Poster
    Dalaker, Halvor; Tangstad, Merete. (2008) The Solubility Of Carbon In Liquid Silicon And Its Dependence On The Boron Levels. 18th NREL workshop on crystalline silicon solar cells & modules ; 2008-08-03 - 2008-08-06.

2007

  • Poster
    Dalaker, Halvor; Tangstad, Merete. (2007) EFFECTIVE DISTRIBUTION COEFFICIENT OF BORON IN MULTICRYSTALLINE SOLAR GRADE SILICON. 22nd European PVSEC ; 2007-09-03 - 2007-09-07.

2001

  • Academic lecture
    Ostrovski, Oleg; Olsen, Sverre E.; Tangstad, Merete; Yastreboff, Michael. (2001) Kinetic Modelling of MnO Reduction from Manganese Ore. The Ninth International Ferroalloys Congress . [Mangler data]; Quebec City, Canada, June 3-6, 2001.
  • Academic lecture
    Tangstad, Merete; Heiland, Bjørn; Olsen, Sverre E.; Tronstad, Ragnar. (2001) SiMn Production in a 150 kVA Pilot Scale Furnace. The Ninth International Ferroalloys Congress . [Mangler data]; Quebec City, Canada, June 3-6, 2001.

1998

  • Academic lecture
    Olsø, Vegard; Tangstad, Merete; Olsen, Sverre E.. (1998) Reduction kinetics of MnO-saturated slags. 8th International Ferroalloys Congress, INFACON 8 . [Mangler data]; Beijing, Kina.

1997

  • Academic lecture
    Tangstad, Merete; Olsen, Sverre E.. (1997) Phase relations in ferromanganese slags during melting and reduction. Molten Slags, Fluxes and Salts'97 Conference . [Mangler data]; Sydney.

1995

  • Academic lecture
    Olsen, Sverre E.; Tangstad, Merete. (1995) The importance of slag basicity in the production of high carbon ferromanganese. Electric Furnace Conference . [Mangler data]; Orlando, Fla..
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