Obtaining of ferrosilicon from technogenic magnetite concentrate

Authors

  • V.M. Shevko M. Auezov South Kazakhstan State University
  • P.V. Kaskin Iron Concentrate Company LLP
  • A.D. Badikova M. Auezov South Kazakhstan State University
  • D.D. Amanov M. Auezov South Kazakhstan State University

DOI:

https://doi.org/10.31643/2020/6445.20

Keywords:

magnetite concentrate, quartzite, coke, thermodynamic modeling, electric melting, ferrosilicon.

Abstract

The article presents the results of studies on the production of ferrosilicon from iron ore (magnetite) concentrate and quartzite. The studies were carried out by thermodynamic simulation using the HSC-5.1 software package, based on the principle of Gibbs minimum energy and electric smelting of the concentrate together with coke and quartzite in a single-electrode arc furnace. Based on the studies, it was found that, under equilibrium conditions, the interaction of magnetite concentrate with silicon oxide (IV) and carbon is accompanied by the formation of FeSi (> 1200 0C), Fe3Si (> 1100 0C), FeSi2 (> 500 0C), Zng (> 800 0C) Pbg (> 1200 0C); the degree of silicon extraction into the ferroalloy depends on the ratio in the SiO2 / Fe3O4 mixture, decreasing from 85.6 to 66.1 (for example, at 17000С) with an increase in the SiO2 / Fe3O4 ratio from 0.42 to 1.25. When melting a mixture containing 70% concentrate, 11% quartzite, 19% coke, a ferroalloy containing 15-18% Si. The resulting ferroalloys are graded from FeSi15 to FeSi45.

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Author Biographies

V.M. Shevko, M. Auezov South Kazakhstan State University

Doctor of technical sciences, professor , head of department of Metallurgy of M.Auezov South Kazakhstan State University, Shymkent, Kazakhstan

P.V. Kaskin, Iron Concentrate Company LLP

Engineer-expert, enriching engineer. General director of Iron Concentrate Company LLP. Balkhash, Kazakhstan.

A.D. Badikova, M. Auezov South Kazakhstan State University

Master of engineering and technology, specialist junior researcher of M. Auezov South Kazakhstan State University, Shymkent, Kazakhstan.

D.D. Amanov, M. Auezov South Kazakhstan State University

Master of Engineering, Junior Researcher, M. Auezov South Kazakhstan State University, Shymkent, Kazakhstan.

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Published

2020-06-11

How to Cite

Shevko, V., Kaskin, P., Badikova, A., & Amanov, D. (2020). Obtaining of ferrosilicon from technogenic magnetite concentrate. Kompleksnoe Ispolzovanie Mineralnogo Syra = Complex Use of Mineral Resources, 313(2), 71–78. https://doi.org/10.31643/2020/6445.20