Ferroalloys purposes: as an alloying agent. Not only can reduce the content of alloying elements in steel impurities. But also to adjust the chemical composition of the steel. The chemical composition of the steel used to adjust the steel alloying element or alloying agent in Jilin new alloy called a calcium aluminosilicate alloy, commonly used alloying elements are silicon, manganese, chromium, molybdenum, vanadium, titanium, tungsten, cobalt, boron, niobium, etc. . Various alloying elements and different steel bell alloying elements have different properties and uses. Ferroalloy production methods: extrajudicial furnace. Rely on chemical reactions generated by thermal reduction heating alloy and slag calcium aluminosilicate Tianjin new alloy, and the reduction reaction automatically, without external supply of heat. Simple equipment outside the furnace calcium aluminosilicate new alloy can produce very low carbon content products. However, due to fast response time is short, the impurity content of the alloy can not be adjusted in the smelting process. Therefore, strict quality requirements of the charge, containing fewer impurities, and to dried, crushed to a certain size.