Smelting classification
According to the equipment used, it is divided into blast furnace smelting, reverberatory furnace smelting and electric furnace smelting; according to the process characteristics, it is divided into flash smelting, molten pool smelting, vortex smelting, oxygen-rich smelting, hot air smelting, smelting smelting, direct smelting of sulphide concentrate and vulcanization. Concentrate self-heating smelting, etc. These two classifications are difficult to explain the essence of the smelting process. The blast furnace smelting is based on a bulk material or a kneaded concentrate, and the coke is used as a fuel or as a reducing agent. The reverberatory furnace smelting is a method in which a powdery material is used as a raw material, and the fuel is burned and heated to be smelted. Electric furnace smelting is a method in which granules or powdery materials are used as raw materials and smelting by electric heating.
According to the essence of the process reaction, it can be divided into oxidative smelting, reduction smelting, reduction smelting smelting, volatile smelting, precipitation smelting and reaction smelting.