Introduction Of Carbon Ferrochromium

Smelting with reducing electric furnace, using coke as reducing agent, silica or bauxite as flux. The slag composition is generally SiO227～33%, MgO30～34%, Al2O326～30%, Cr2O3<9.0%. Due to the formation of chromium carbide, the product contains 4 to 9% carbon. The capacity of the reduction electric furnace for modern smelting of ferrochromium is 10,000 to 48,000 kVA, generally closed and fixed, and the smelting power consumption is 3,000-4,000 kWh/ton. The electric furnace for smelting silicon-chromium alloy is similar to the ferrochromium reduction electric furnace. There are two smelting methods: one-step method and two-step method. One-step smelting with chromite, silica, coke and flux. The two-step method uses carbon ferrochromium, silica, and coke as raw materials for slag-free smelting, and the smelting process is generally similar to that of ferrosilicon production. The smelting power consumption is about 3000-4000 kWh per ton.