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Mengyi Zhu

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Mengyi Zhu

Postdoctoral Fellow
Department of Materials Science and Engineering

mengyi.zhu@ntnu.no
Gløshaugen, Alfred Getz Vei 2, Bergbygget, room E-221
About Publications Teaching Outreach

About

Dr. Mengyi Zhu completed his undergraduate studies in Metallurgical Engineering at the University of Science and Technology Beijing (USTB), China, in 2013, followed by a master's degree in the same field from RWTH Aachen University, Germany, in 2017. He earned his doctoral degree in Metallurgical Engineering in 2021 from the Norwegian University of Science and Technology (NTNU), Norway. His Ph.D. research focused on silicon purification through acid leaching and slag refining techniques. His current research interests include slag science and engineering, computational simulations of metallurgical materials, machine learning for metallurgical applications, and sustainable ferrous and non-ferrous metallurgy for carbon neutrality. 

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2025

  • Kar, Manish Kumar; Zhu, Mengyi; Safarian, Jafar. (2025) Hydrogen Reduction of Hazardous Bauxite Residue for Green Steel and Sustainable Alumina Production. Journal of Sustainable Metallurgy
    Academic article

2024

  • Jakovljevic, Katarina; Simkhada, Nishan; Zhu, Mengyi; Wallin, Bogg Maria Elisabeth; Tranell, Maria Gabriella. (2024) Aluminothermic production of silicon using different raw materials. The Australasian Institute of Mining and Metallurgy
    Academic chapter/article/Conference paper
  • Zhu, Mengyi; Safarian, Jafar; Mochamad Ilham, Al Fariesy Irvansyah; Sabatino, Marisa Di. (2024) Effect of Mg alloying and cooling rate on the microstructure of silicon. Frontiers in Photonics
    Academic article
  • Zhu, Mengyi; Philipson, Harald; Blandhol, Kjell; Djupvik, Veronika; Engvoll, Krister; Safarian, Jafar. (2024) Pilot-Scale Aluminothermic Production of Silicon Alloy and Alumina-Rich Slag. ACS Sustainable Chemistry and Engineering
    Academic article
  • Zhu, Mengyi; Safarian, Jafar. (2024) Determining the properties of CaO-Al2O3-SiO2 slag system from molecular dynamics simulation. The Australasian Institute of Mining and Metallurgy
    Academic chapter/article/Conference paper
  • Zhu, Mengyi; Wu, Guixuan; Tang, Kai; Müller, Michael; Safarian, Jafar. (2024) Combined silicon refining for boron removal and Si-Kerf recycling using K2O-CaO-SiO2 slags. Chemical Engineering Journal
    Academic article
  • Tang, Kai; Zhu, Mengyi; You, Jinglin; Ma, Xiang; Tranell, Maria Gabriella. (2024) Evaluation of Thermal Conductivities of Molten SiO2-Al2O3-CaO Slags. The Australasian Institute of Mining and Metallurgy
    Academic chapter/article/Conference paper
  • Kar, Manish Kumar; Zhu, Mengyi; Safarian, Jafar. (2024) Iron enrichment and alumina recovery from bauxite residue through hydrogen reduction followed by alkaline leaching and CaO circulation. Canadian metallurgical quarterly
    Academic article

2023

  • Kar, Manish Kumar; Zhu, Mengyi; Safarian, Jafar. (2023) Comparative kinetics study of different iron-containing pellets with hydrogen at isothermal conditions. Journal of Materials Research and Technology (JMR&T)
    Academic article
  • Zhu, Mengyi; Safarian, Jafar. (2023) Alumina Production from CaO-Al2O3-SiO2 Slag Produced in SisAl Process. The International Committee for Study of Bauxite, Alumina & Aluminium Conference Proceedings
    Academic article

2022

  • Zhu, Mengyi; Arntsen, Anne Sofie; Safarian, Jafar. (2022) Silicon Recovery Via the Acid Leaching of a Si-Ca-Al Alloy Produced by the SisAl Process. Proceedings of the Silicon for the Chemical & Solar Industry XVI
    Academic article

2021

  • Zhu, Mengyi; Wu, Guixuan; Azarov, Alexander; Monakhov, Eduard; Tang, Kai; Müller, Michael. (2021) Effects of La2O3 Addition into CaO-SiO2 Slag: Structural Evolution and Impurity Separation from Si-Sn Alloy. Metallurgical and Materials Transactions B
    Academic article
  • Zhu, Mengyi; Yue, Shengying; Wu, Guixuan; Tang, Kai; Xu, Yijiang; Safarian, Jafar. (2021) P removal from Si by Si-Ca-Al alloying-leaching refining: Effect of Al and the CaAl2Si2 phase. Separation and Purification Technology
    Academic article

2020

  • Zhu, Mengyi; Tang, Kai; Safarian, Jafar. (2020) The effect of Ti and Y addition on the microstructure and leaching purification of Ca-alloyed metallurgical silicon.
    Academic chapter/article/Conference paper
  • Zhu, Mengyi; Wan, Di; Tang, Kai; Safarian, Jafar. (2020) Impurity removal from Si by Si-Ca-Mg ternary alloying-leaching system. Materials & design
    Academic article
  • Zhu, Mengyi; Shengying, Yue; Tang, Kai; Safarian, Jafar. (2020) New Insights into Silicon Purification by Alloying-Leaching Refining: A Comparative Study of Mg-Si, Ca-Si, and Ca-Mg-Si Systems. ACS Sustainable Chemistry and Engineering
    Academic article
  • Zhu, Mengyi; Azarov, Alexander; Monakhov, Eduard; Tang, Kai; Safarian, Jafar. (2020) Phosphorus separation from metallurgical-grade silicon by magnesium alloying and acid leaching. Separation and Purification Technology
    Academic article

Journal publications

  • Kar, Manish Kumar; Zhu, Mengyi; Safarian, Jafar. (2025) Hydrogen Reduction of Hazardous Bauxite Residue for Green Steel and Sustainable Alumina Production. Journal of Sustainable Metallurgy
    Academic article
  • Zhu, Mengyi; Safarian, Jafar; Mochamad Ilham, Al Fariesy Irvansyah; Sabatino, Marisa Di. (2024) Effect of Mg alloying and cooling rate on the microstructure of silicon. Frontiers in Photonics
    Academic article
  • Zhu, Mengyi; Philipson, Harald; Blandhol, Kjell; Djupvik, Veronika; Engvoll, Krister; Safarian, Jafar. (2024) Pilot-Scale Aluminothermic Production of Silicon Alloy and Alumina-Rich Slag. ACS Sustainable Chemistry and Engineering
    Academic article
  • Zhu, Mengyi; Wu, Guixuan; Tang, Kai; Müller, Michael; Safarian, Jafar. (2024) Combined silicon refining for boron removal and Si-Kerf recycling using K2O-CaO-SiO2 slags. Chemical Engineering Journal
    Academic article
  • Kar, Manish Kumar; Zhu, Mengyi; Safarian, Jafar. (2024) Iron enrichment and alumina recovery from bauxite residue through hydrogen reduction followed by alkaline leaching and CaO circulation. Canadian metallurgical quarterly
    Academic article
  • Kar, Manish Kumar; Zhu, Mengyi; Safarian, Jafar. (2023) Comparative kinetics study of different iron-containing pellets with hydrogen at isothermal conditions. Journal of Materials Research and Technology (JMR&T)
    Academic article
  • Zhu, Mengyi; Safarian, Jafar. (2023) Alumina Production from CaO-Al2O3-SiO2 Slag Produced in SisAl Process. The International Committee for Study of Bauxite, Alumina & Aluminium Conference Proceedings
    Academic article
  • Zhu, Mengyi; Arntsen, Anne Sofie; Safarian, Jafar. (2022) Silicon Recovery Via the Acid Leaching of a Si-Ca-Al Alloy Produced by the SisAl Process. Proceedings of the Silicon for the Chemical & Solar Industry XVI
    Academic article
  • Zhu, Mengyi; Wu, Guixuan; Azarov, Alexander; Monakhov, Eduard; Tang, Kai; Müller, Michael. (2021) Effects of La2O3 Addition into CaO-SiO2 Slag: Structural Evolution and Impurity Separation from Si-Sn Alloy. Metallurgical and Materials Transactions B
    Academic article
  • Zhu, Mengyi; Yue, Shengying; Wu, Guixuan; Tang, Kai; Xu, Yijiang; Safarian, Jafar. (2021) P removal from Si by Si-Ca-Al alloying-leaching refining: Effect of Al and the CaAl2Si2 phase. Separation and Purification Technology
    Academic article
  • Zhu, Mengyi; Wan, Di; Tang, Kai; Safarian, Jafar. (2020) Impurity removal from Si by Si-Ca-Mg ternary alloying-leaching system. Materials & design
    Academic article
  • Zhu, Mengyi; Shengying, Yue; Tang, Kai; Safarian, Jafar. (2020) New Insights into Silicon Purification by Alloying-Leaching Refining: A Comparative Study of Mg-Si, Ca-Si, and Ca-Mg-Si Systems. ACS Sustainable Chemistry and Engineering
    Academic article
  • Zhu, Mengyi; Azarov, Alexander; Monakhov, Eduard; Tang, Kai; Safarian, Jafar. (2020) Phosphorus separation from metallurgical-grade silicon by magnesium alloying and acid leaching. Separation and Purification Technology
    Academic article

Part of book/report

  • Jakovljevic, Katarina; Simkhada, Nishan; Zhu, Mengyi; Wallin, Bogg Maria Elisabeth; Tranell, Maria Gabriella. (2024) Aluminothermic production of silicon using different raw materials. The Australasian Institute of Mining and Metallurgy
    Academic chapter/article/Conference paper
  • Zhu, Mengyi; Safarian, Jafar. (2024) Determining the properties of CaO-Al2O3-SiO2 slag system from molecular dynamics simulation. The Australasian Institute of Mining and Metallurgy
    Academic chapter/article/Conference paper
  • Tang, Kai; Zhu, Mengyi; You, Jinglin; Ma, Xiang; Tranell, Maria Gabriella. (2024) Evaluation of Thermal Conductivities of Molten SiO2-Al2O3-CaO Slags. The Australasian Institute of Mining and Metallurgy
    Academic chapter/article/Conference paper
  • Zhu, Mengyi; Tang, Kai; Safarian, Jafar. (2020) The effect of Ti and Y addition on the microstructure and leaching purification of Ca-alloyed metallurgical silicon.
    Academic chapter/article/Conference paper

Teaching

Courses

  • TKP4158 - Hydrometallurgical Process Technology

Outreach

2024

  • Academic lecture
    Tang, Kai; Zhu, Mengyi; You, Jinglin; Ma, Xiang; Tranell, Maria Gabriella. (2024) Evaluation of Thermal Conductivities of Molten SiO2-Al2O3-CaO Slags. The Australasian Institute of Mining and Metallurgy 12th International Conference on Molten Slags, Fluxes and Salts , Brisbane, Australia 2024-06-17 - 2024-06-19

2023

  • Academic lecture
    Zhu, Mengyi. (2023) Thermodynamics in hydrometallurgy, fundamentals. HydroMetEC Introductory Course 2023-09-12 - 2023-09-26
  • Academic lecture
    Zhu, Mengyi. (2023) Leaching refining in solar silicon production. HydroMetEC Introductory Course 2023-09-12 - 2023-09-26
  • Academic lecture
    Zhu, Mengyi; Safarian, Jafar. (2023) Alumina Production from CaO-Al2O3-SiO2 Slag Produced in SisAl Process. 41st International ICSOBA Conference 2023-11-05 - 2023-11-09

2022

  • Academic lecture
    Zhu, Mengyi; Safarian, Jafar. (2022) Acid leaching for high purity Si production from the innovative SisAl process. HydroMetEC International Seminar 2022-11-23 - 2022-11-24
  • Lecture
    Zhu, Mengyi; Safarian, Jafar. (2022) Purification of silicon produced through the SisAl process by acid leaching. NTNU Refining and Recycling of Solar Silicon Seminar , Trondheim 2022-11-04 - 2022-11-04
  • Academic lecture
    Zhu, Mengyi; Safarian, Jafar. (2022) Silicon purification via acid leaching. NTNU SINTEF Hypros Gemini Center Hydrometallurgy Seminar , Trondheim 2022-11-08 - 2022-11-08
  • Lecture
    Zhu, Mengyi; Arntsen, Anne Sofie; Safarian, Jafar. (2022) Silicon Recovery Via the Acid Leaching of a Si-Ca-Al Alloy Produced by the SisAl Process. NTNU Silicon for the Chemical & Solar Industry XVI , Online 2022-06-14 - 2022-06-16

2021

  • Academic lecture
    Zhu, Mengyi; Wu, Guixuan; Safarian, Jafar. (2021) Effect of La2O3 Addition to CaO-SiO2 Slag on B and P Removal from Sn-doped Si for Solar-Grade Silicon Production. The 11th International Conference on Molten Slags, Fluxes, and Salts , Virtual 2021-02-21 - 2021-02-25

2020

  • Academic lecture
    Zhu, Mengyi; Tang, Kai; Safarian, Jafar. (2020) The effect of Ti and Y addition on the microstructure and leaching purification of Ca- alloyed metallurgical silicon. Silicon for the Chemical and Solar Industry XV 2020-06-14 - 2020-06-16

2019

  • Academic lecture
    Zhu, Mengyi; Safarian, Jafar. (2019) Elements behavior in solidification of Mg-doped silicon and their removal in acid leaching. Norwegian Solar Cell Conference 2019 2019-05-20 - 2019-05-21

2018

  • Poster
    Zhu, Mengyi; Murgau, Adrian; Safarian, Jafar. (2018) Effects of Magnesium-doping on silicon leaching for solar grade feedstock production. 35th European Photovoltaic Solar Energy Conference and Exhibition 2018-09-24 - 2018-09-28
  • Academic lecture
    Zhu, Mengyi; Safarian, Jafar. (2018) Hydrochloric acid leaching of Mg-doped Si for solar grade feedstock production. Norwegian Solar Cell Conference 2018 , Son 2018-05-02 - 2018-05-04

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