The main method of ferroalloy production: blast furnace process. Production of blast furnace iron alloy, with high labor productivity Buying metal fume, and low cost. However, given the limitations of blast furnace hearth temperatures. As well as the conditions under blast furnace metal is carbon fully saturated. Therefore, generally used only for the production of blast furnace easily reducible element alloy and low-grade silicon metal powder alloy wholesale, such as high-carbon ferromanganese, ferrosilicon low, low silico-manganese, nickel, iron, and manganese-rich slag. Ferroalloy mainly used as an additive steelmaking deoxidizer and alloying elements. Deoxidizer: removal of molten steel in the steelmaking process oxygen in silicon metal powder processing, but also the removal of certain alloy steel other impurities such as sulfur, nitrogen and the like; an alloy additive: steel composition according to claim alloying elements added to steel in order to improve the properties of steel; inoculant: Before the iron casting molten iron added to improve the crystal structure of the casting.