МРНТИ 53.03.03                                                                              №2 (2020г.)

Dantayeva А.Z., Ibrayev М.B., Sultamurat G.I.

The article considers the theoretical foundations of the recovery process and the technology of silicon smelting in electric arc furnaces. The results of
a study of thermodynamics, reaction kinetics, and mechanisms of the melting process are presented. Production issues are covered: charge preparation, smelting, refining, gas purification. Physicochemical models of the carbothermal process were developed, proposed and tested under industrial conditions, which made it possible to assess the influence of the specified technological parameters of the smelting (chemical composition and loading coefficients of charge components, temperature) on silicon recovery and grade. The article describes the main mechanism for the recovery of silica in the furnace, presents one of the designs of the furnace and the technological scheme for the production of silicon. The author
suggested studying the process of producing metallurgical silicon in RTP using the HSC Chemistry software package
Key words: silicon carbide, ore-thermal furnace, thermodynamics, Gibbs energy