The application of ferro silicon

Ferro silicon is widely used in steel industry, foundry industry and other industrial production.
Ferro silicon is an essential deoxidizer in the steelmaking industry. In Torch Steel, ferro silicon 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 steel can significantly increase the strength, hardness and elasticity of steel, increase the magnetic permeability of steel, and reduce the hysteresis loss of transformer steel. General steel contains silicon 0.15%-0.35%, structural steel contains silicon 0.40%-1.75%, tool steel contains silicon 0.30%-1.80%, spring steel contains silicon 0.40%-2.80%, and stainless acid-resistant steel contains silicon Silicon is 3.40% to 4.00%, heat-resistant steel contains 1.00% to 3.00% silicon, and silicon steel contains 2% to 3% silicon or higher.
High-silicon ferro silicon or silicon alloys are used as reducing agents in the production of low-carbon ferroalloys in the ferroalloy industry. Adding ferro silicon to cast iron can be used as an inoculant for ductile iron, and can prevent the formation of carbides, promote the precipitation and spheroidization of graphite, and improve the performance of cast iron.
In addition, ferro silicon powder can be used as a suspension phase in the beneficiation industry, and as a coating for welding rods in the electrode manufacturing industry; high-silicon ferro silicon can be used to prepare semiconductor pure silicon in the electrical industry, and can be used to manufacture silicone in the chemical industry.
In the steelmaking industry, about 3-5kg of 75% ferro silicon is consumed for each ton of steel produced.
Melting point: 75FeSi is 1300°C
Metal compounds containing a small amount of phosphorus in ferro silicon, such as calcium phosphide, etc., will release phosphine if they are damp during transportation by vehicle or ship or storage in warehouses, poisoning people in or around the warehouse. Phosphine poisoning can cause death in severe cases.