Preparations before Ovens: ferroalloy production process. First check equipment. Conductive systems, electrode suspension system, Jilin calcium aluminosilicate particles, batching system, electrode lifting systems, electrode pressure release system, transportation system; to closed furnace also includes a closed system, flue gas cleaning systems, Henan calcium aluminosilicate particles, press production conditions test, only after passing the oven. Ferroalloy production methods: extrajudicial furnace. Rely on chemical reactions generated by thermal reduction heating alloy and slag, and the reduction reaction automatically, without external supply of heat. Furnace extrajudicial simple equipment, can produce very low carbon content of products. However, due to fast response, calcium aluminosilicate particles, 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.