Ferrosilicon is an indispensable deoxidizer in the steel industry. Ferrosilicon is used for precipitation deoxidation and diffused deoxidation in steelmaking. Ferrosilicon is also used as an alloying agent in steelmaking. Add a certain amount of silicon into the steel can significantly improve the strength of steel, hardness and elasticity. Enhance the magnetic permeability of the steel, to reduce the hyteresis loss of the transformer steel.