The hot mixing method is used to smelt micro-carbon ferrochromium. The process is to heat the pre-melted lime melt and silicon-chromium alloy in a molten iron ladle outside the furnace to produce micro-carbon ferrochromium. The hot mixing process can be divided into one-step hot mixing method, two-step hot mixing method and three-step hot mixing method according to the number of staged reductions of Cr2O3 in the slag.
The equipment used for electrosilicothermic smelting is an electric arc furnace. It is made by adding chromium ore, silicon-chromium alloy and lime into the electric arc furnace. It mainly relies on electric heat to melt the charge, and the silicon in the silicon-chromium alloy reduces the Cr2O3 in the chromium ore.
It is mainly used to improve the oxidation resistance and corrosion resistance of steel, so that the surface of the steel forms a strongly adherent oxide film in the oxidizing atmosphere, and then the oxidation stops or the oxidation rate slows down. Microcarbon ferrochromium is mainly used to produce stainless steel, wear-resistant and heat-resistant steel.
In short, these two smelting methods of micro-carbon ferrochromium need to be carried out in a standardized manner in order to produce high-quality products and play their role in future use.
