Optimization of the electrothermal production of ferrosilicon from the leaching tailings of the oxidized copper ore of Almaly

The increase in the integrated use of oxidized and mixed copper ores largely depends on creation a technology that allows not only to extract copper, but also obtain marketable products from non-metallic components. article presents results experimental studies electric melting leaching tailings ore Almaly deposit containing by weight, %: 70.9 SiO2, 15.9 Al2O3, 2.1 MaO, 2.4 CaO, 3.6 K2O, 2.2 Na2O, 2.0 Fe2O3, 0.4 TiO2, 0.2 BaO, CuO ferrosilicon. were carried out using single-electrode single-phase arc furnace with adjustable power, as well method rotatable second-order research (Box-Hunter plan). influence amount coke steel chips degree silicon extraction into alloy its grade was determined. It found constant coke, an charge increases ferroalloy reduces concentration Si it. behavior has lesser effect. Based obtained volumetric planar images changes composition, geometric optimization process out. ferrosilicon FeSi25 70-75% it is formed presence 30-31.3% 31.3-32.0% chips. To FeSi45 brand, 70-76% silicon, should be 32.2-36.3%, 25.6-28.3% mass brags; 24-25.2% chips, 30.7-36.3% FeSi50 brand smelted tailings.