Ferroalloys purposes: as a deoxidizer. Commonly used deoxidizer manganese, silicon and aluminum. These elements more ferroalloy Fe-Mn, Fe-Si and Al added to molten steel in the form. Binding elements with oxygen, the stronger the higher oxygen content in the steel Jilin barium calcium aluminosilicate Deoxidants, its oxygen effect is better. Ferroalloy production methods: the blast furnace process. Easy to restore elements of ferroalloy and low-grade iron alloy, due to the low temperature required for the reduction of Tianjin Si-Al-Ba-Ca composite deoxidation agent, smelting in blast furnaces, a similar process with its pig iron smelting. But required higher temperature than pig iron, calcium, barium aluminosilicate Deoxidants, so large coke. Meanwhile, the coke as fuel and reductant, alloy carburizing, can only produce high-carbon products.