The calcium content of general ferrosilicon is relatively small, but some special processes need higher calcium content of ferrosilicon, so ferrosilicon manufacturers in the production of ferrosilicon process, through a special process to make ferrosilicon contains higher calcium content, so as to produce ferrosilicon calcium.
Ferrosilicon calcium is widely used in the steelmaking process, for example, in the production of low carbon steel, stainless steel, and other steel, ferrosilicon calcium is used as its good deoxidizer and desulfurizer, so as to effectively improve the quality of steel. ferrosilicon calcium is rich in Si, Fe, Ca, and other elements, which play a very important role in steelmaking. The silicon and calcium elements in ferrosilicon calcium have a very good affinity with oxygen and are easy to produce silicon dioxide and calcium oxide. Thus, the oxygen content in molten steel can be reduced more quickly and effectively, the number of oxides and impurities can be reduced, and the inclusion form in molten steel can be improved. So that more inclusions floating on the surface of molten steel, are easy to clean, greatly improve the purity of molten steel, improve the quality of steel.
Ferrosilicon calcium will affect the slag indicators, it will directly affect the slag proportion, furnace temperature, viscosity, melting point, density, If the silicon element in ferrosilicon calcium is high, the proportion and furnace temperature of slag will be reduced, and the viscosity, melting point and density of slag will be improved. The proportion, furnace temperature, melting point, and density of slag will be increased and furnace temperature will be reduced with higher Fe content. Higher calcium content will reduce the proportion, melting point, and density of slag, and improve the viscosity and furnace temperature of slag. The production process of different steels requires the strict calculation of the various indicators of ferrosilicon calcium and the viscosity of slag often decreases with the increase of furnace temperature.