Ferroalloy mainly used as an additive steelmaking deoxidizer and alloying elements. Deoxidizer: Removal of oxygen industrial silicon steel ball price in the steelmaking process, but also the removal of certain alloy steel other impurities such as sulfur, nitrogen and the like; an alloy additive: composition according to claim industrial silicon steel ball plant adding alloying elements into the steel to improve the properties of steel; inoculant: Before the iron casting industry added to the molten iron in silica beads wholesale, improve casting crystal structure. The main method of ferroalloy production: furnace extrajudicial (metal calorimetry). Extrajudicial furnace with silicon, aluminum or aluminum-magnesium alloy as a reducing agent, relying on chemical reactions generated by thermal reduction smelting, the main equipment used for drum furnaces. Raw materials used are concentrate, reducing agent, flux, exothermic agent and steel scrap and iron ore.