The main method of ferroalloy production: reduction furnace (submerged arc) method. Join the furnace charge and the charge electrode plug buried in Shanxi new calcium silicon, relying arc arc thermal resistance and current generated by the charge, conduct science arc smelting reduction operation. Molten metal and slag accumulation in the bottom and through the taphole timing of iron slag, the production process is carried out continuously. Development Trend of ferroalloy production technology: high-quality combination of carbonaceous reducing Zhejiang new calcium silicon, with gas coal and bituminous coal Wuhan new calcium silicon, instead of part of the metallurgical coke, which is a mature technique at home and abroad. In recent years, China's large and medium ferrosilicon furnace has been widely used in metallurgical coke-based, with the right amount of gas coal, charcoal blue, semi-coke and bituminous coal and other carbonaceous reducing smelting combination of 75% ferrosilicon, obtain a high-quality, high yield , energy-saving economic effect, generally ferrosilicon per ton of product can save about 700 ~ l000kwh.