The main uses and functions of ferrosilicon include serving as a deoxidizer and alloying agent in the steel industry, as well as its applications in other industrial productions. Ferrosilicon is crucial in the steelmaking industry, mainly used as a deoxidizer and alloying agent. In the steelmaking process, ferrosilicon helps to remove oxygen from steel by precipitation deoxidation and diffusion deoxidation, thereby improving the quality of steel. In addition, ferrosilicon is also used as an alloying agent in steelmaking. By adding a certain amount of silicon to steel, the strength, hardness, and elasticity of the steel can be significantly improved, the magnetic permeability of the steel can be increased, and the hysteresis loss of transformer steel can be reduced. These characteristics of ferrosilicon make it an indispensable material in steel production. In addition to the steel industry, ferrosilicon also plays an important role in other fields. For example, in the casting industry, ferrosilicon is used as an inoculant and spheroidizing agent to help precipitate graphite and improve the quality of castings. In the production of ferroalloys, ferrosilicon is used as a reducing agent to produce low-carbon ferroalloys.