Metal Silicon Block For Metallurgical Industry

The metal silicon Processing

The technological process of chemical silicon includes charge preparation, electric furnace smelting, silicon refining and casting, and crushing to remove slag inclusions. Before the charge is prepared, all raw materials must undergo necessary processing. The silica is crushed in the jaw crusher until the size is no more than 100mm, and the pieces smaller than 5mm are screened out and washed with water. Because the broken pieces in the furnace are melted in the upper part of the furnace, the air permeability of the charge is reduced, making the production process difficult. Petroleum coke has a high conductivity and must be crushed to a size of no more than 10 mm, and the amount of petroleum coke powder must be controlled. Because it burns directly on the furnace mouth, it will cause insufficient reducing agent.
In the production of chemical silicon, bituminous coal can completely replace charcoal. For example, the finely washed bituminous coal in Zhuzhou, Hunan Province has a fixed carbon content of 77.19%, a volatile content of 19.4%, an ash content of 3.41%, a Fe2O3 content of 0.22%, an Al2O3 content of 0.99%, and a CaO content of 0.17%. . After production practice, it is feasible to use this kind of bituminous coal to smelt chemical silicon.