The main method of ferroalloy production: furnace extrajudicial (metal calorimetry). Extrajudicial furnace with silicon, aluminum or aluminum-magnesium alloy as a reducing agent, thermal reduction rely on chemical reactions to produce the silicon carbide powder metallurgical purposes, the main equipment used for drum furnaces. Raw materials used are concentrate, reducing agent, flux, exothermic agent and steel scrap and iron ore. The main method of ferroalloy production: vacuum resistance furnace. Production of low carbon micro-carbon ferrochrome nitride ferrochrome, ferromanganese and other products using vacuum resistance furnace when buying silicon carbide powder, the main equipment for the vacuum resistance furnace. A vacuum decarburization furnace law in the solid state under vacuum conditions, the press-forming of smelting agglomerates charged into the furnace, depend on the current through the heating resistor when the hot electrode, while the vacuum pumping, the production is carried out intermittently.