Ferrochromium refining method is divided into refining high-carbon ferrochrome with chromium ore and refining high-carbon ferrochrome with oxygen. When using chrome ore concentrate high carbon ferrochromium, the refining slag has a larger viscosity and a higher melting point, and the temperature during the smelting process must be higher. Therefore, the power consumption is high, the life of the lining is short, and the carbon content is not easy to drop. Blowing ferrochromium with oxygen has great advantages, such as high productivity, low cost and high recovery rate.
The traditional production method is still the electric silicon thermal method. The electrosilicon thermal method is to reduce the oxides of chromium and iron in the silicon-chromium alloy under the condition of making alkaline slag in the electric furnace, thereby producing medium and low carbon ferrochromium.
