Iron and siliconferroalloy(Using silica, steel, and coke as raw materials, silicon reduced at a high temperature of 1500-1800 degrees is melted in molten iron to form ferrosilicon alloy). It is an important alloy variety in the smelting industry.

Ferrosilicon is widely used in the steel industry, foundry industry and other industrial production.

Ferrosilicon is an indispensable deoxidizer in the steelmaking industry. In torch steel, ferrosilicon is used for precipitation deoxidation and diffusion deoxidation. Brick iron is also used as an alloying agent in steelmaking. Adding a certain amount of silicon to the steel can significantly improve the strength, hardness and elasticity of the steel, increase the permeability of the steel, and reduce the hysteresis loss of the 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, silicon steel contains 2%~3% silicon or higher.

High-silicon ferrosilicon or siliceous alloys are used in the ferroalloy industry as a reducing agent in the production of low-carbon ferroalloys. Ferrosilicon can be used as an inoculant for ductile iron, and can prevent the formation of carbides, promote the precipitation and nodularization of graphite, and improve the properties of cast iron.

In addition, ferrosilicon powder can be used as a suspended phase in the mineral processing industry and as a coating for welding rods in the electrode manufacturing industry; High-silicon ferrosilicon can be used to prepare semiconductor pure silicon in the electrical industry, and can be used to make silicone in the chemical industry.

In the steelmaking industry, about 3~5kg of 75% ferrosilicon is consumed per ton of steel produced.

Melting Point: 75FeSi is 1300°C

Ferrosilicon contains a small amount of phosphorus metal compounds, such as calcium phosphide, etc., when transported by vehicles and ships or stored in warehouses, if moisture, phosphine can be released, poisoning people in or around the warehouse.Phosphine poisoningIn severe cases, it can cause death.