Anyang Houcheng New Materials Co., LTD

Anyang Houcheng New Materials Co., LTD

Application of ferrosilicon

2025 09/17

Ferrosilicon is an essential deoxidizer in the steelmaking industry. In steelmaking, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. Ferrosilicon is also used as an alloying agent in steelmaking. Adding a certain amount of silicon to steel can significantly improve its strength, hardness, and elasticity, increase its magnetic permeability, and reduce the hysteresis loss of transformer steel. General steel contains 0.15%~0.35% silicon, structural steel contains 0.40%~1.75% silicon, tool steel contains 0.30%~1.80% silicon, spring steel contains 0.40%~2.80% silicon, stainless acid resistant steel contains 3.40%~4.00% silicon, heat-resistant steel contains 1.00%~3.00% silicon, and silicon steel contains 2%~3% or higher.
High silicon ferrosilicon or silicon alloys are used as reducing agents in the production of low-carbon ferroalloys in the ferroalloy industry. Silicon iron added to cast iron can serve as an inoculant for ductile iron, and can prevent the formation of carbides, promote the precipitation and spheroidization of graphite, and improve the properties of cast iron.
In addition, silicon iron powder can be used as a suspended phase in the mineral processing industry and as a coating for welding rods in the welding rod manufacturing industry; High silicon ferrosilicon can be used in the electrical industry to prepare semiconductor pure silicon, and in the chemical industry to manufacture silicone and other materials.
In the steelmaking industry, approximately 3-5 kg of 75% silicon iron is consumed for every 1 ton of steel produced.