Erlend Lunnan Bjørnstad


Erlend Lunnan Bjørnstad


Photo: Portrait of Erlend Lunnan Bjørnstad

Metal-slag-gas Interaction and the Kinetic Behavior of Ca and Al in Refining of Silicon

The typical industrial production route for metallurgical silicon consists of carbothermic reduction of quartz in an electric arch furnace. Refining is then preformed to control the amount of impurities in the final product. My project looks at oxidative ladle refining of silicon, and aims to describe and model the mass transfer of the primary slag forming impurities, Al and Ca.

This is to be done by constructing a mathematical framework based on the theory that is already known, and conducting experiments to fill in the gaps.

Resource Group: Professor Gabriella Tranell (NTNU), Lars Jakobssen (Elkem), Vegard Andersen (Elkem)



Students at Metal Production

Students at Metal Production


Post Doctorial

Sebastien Letout, RD1
Modelling Metallurgical Production Process
Nov 2015 - Nov 2017

Heiko Gaertner, RD4
PAH Standardization




Pyunghwa Kim, RD2
Reduction Mechanisms in the SiMn Process

Massoud Hassanabadi, RD3
Ceramic Foam Filters Used in Molten Al Filtration

Erlend Lunnan Bjørnstad, RD3
Si Refining


Håkon Olsen, RD4
Dust Formation and Clustering



Associated PhD

Karin Fjeldstad Jusnes

Caoimhe Rooney

Raghed Saadieh

Benedicte Hovd
Charcoal for Manganese Production



Kai Erik Ekstrøm, RD3
Recycling and Refining of Metallurgical
Waste Streams







Sethulaksmy Jayakumari, RD2
SiC Formation in Silicon Processes

Nicholas Smith, RD3
Effect of Minor Elements on Al Oxidation

Daniel Clos, RD4
Scaling in Al off-gas Channels/heat Exchangers

Romain Billy, RD5
Material Flow Analysis of Al



Hamideh Kaffash


Mads Fromreide

Fabian Imanasa Azof
Alumina Production