The main method of ferroalloy production: reduction furnace is divided into electric (arc furnace) and two refining furnace. Reduction electric furnace: the furnace and the charge added to the charge electrode plug buried, relying on the arc and the current generated by the charge arc heat resistance silicon metal production plant, were reducing processing arc smelting operation. Molten metal and slag accumulation in the bottom and by the timing of the taphole iron slag silicon metal prices, the production process is carried out continuously. 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.