Silicon Rich Iron Alloy from Bauxite Residue

On February 24^th “Silicon Rich Iron Alloy from Bauxite Residue” paper was published by Halvor Dalaker and Casper van der Eijk. Bauxite residue (BR) contains iron oxide (20-50%) that can be recovered as pig iron, but this is not economically feasible due to low market prices. Instead, efforts are made to maximize the silicon content in iron alloys produced from BR since silicon-rich alloys have higher value. Experiments and thermodynamic modeling were conducted on BR from a legacy site and three alumina refineries, achieving a maximum silicon content of 17% in the produced alloys. The paper discusses the thermodynamics and considers the impact of slag viscosity on the results.

https://link.springer.com/chapter/10.1007/978-3-030-65396-5_8