Abstract
The chemical and phase transformations in the the weltzslag ‒ carbon system in the range 1700‒2100 K and a pressure of 0,1 MPa were simulated. It was found that the maximum degree of transition of iron to condensed Fe < sub >3</ sub > Si is from 34,7 % at 1800 K to 99,9 % at 2100 K, and to the Fe < sub >5</ sub > Si < sub >3</ sub > compound from 47,7 % at 1900 K to 45,6 % at 2000 K. as the temperature rises, iron begins to move into the gas phase. Silicon, in comparison with iron, is more difficult to recover and, as the temperature rises, begins to pass into the gas phase. The degree of transition of nonferrous metals Zn, Cd and Pb to the gas phase is 99,99 % over the entire temperature range. Modeling made it possible to analyze the possibility of obtaining ferrosilicon from technogenic non-ferrous metallurgy wastes by the method of electric melting in an electric arc furnace.