Ferroalloy production methods: extrajudicial furnace. Rely on chemical reactions generated by thermal reduction heating alloy and slag ferrosilicon inoculant, and the reduction reaction automatically, without external supply of heat. Jiangsu simple equipment outside the furnace ferrosilicon inoculant, can produce very low carbon content of 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. Ferroalloy production methods: extrajudicial furnace. The upper part of the ignition method is to mix all good charge into the furnace tube once in Hebei ferrosilicon inoculant, in the upper portion of the mixture into the ignition material (magnesium turnings and saltpeter mixture), with a hot soldering iron or a lighted stick, etc. Magnesium turnings ignite, ambient heat released by burning melting furnace charge, charge to start the reaction, and release heat until the whole furnace Lianwan. The upper part of the ignition method used for the more intense the reaction, the reaction can not close, or reaction heat more intense hopes to accelerate the reaction conditions to minimize heat loss.