The main method of ferroalloy production: furnace extrajudicial (metal calorimetry). Extrajudicial furnace with silicon, aluminum or aluminum-magnesium alloy of silicon carbide powder as a reducing agent Buying 75 #, rely 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. Ferroalloys: ferroalloys production process is the charge, reducing agents, slag, component-adjusting agent at a high temperature alloy through physical and chemical changes generated slag, furnace gas process. Production methods: general summary, there are five common production methods: blast furnace, heating method, silicon thermal power, metal heat method, converter process.