Ferro silicon is an indispensable deoxidizer in the steelmaking process, used for precipitation deoxidation and diffusion deoxidation. Adding a certain amount of silicon to the steel can significantly increase the strength, hardness and elasticity of the steel, increase the magnetic permeability of the steel, and reduce the hysteresis loss of the transformer steel.
Below Shengchi Ferroalloy introduces you the application and function of ferro silicon:
1. Used as a deoxidizer and alloying agent in the steelmaking industry. In order to obtain steel with qualified chemical composition and ensure the quality of steel, deoxidation must be carried out in the final stage of steelmaking. The chemical affinity between silicon and oxygen is very large. Therefore, ferro silicon is a strong deoxidizer for steelmaking for precipitation and diffusion. deoxidation.
In addition, in the steelmaking industry, ferrosilicon powder can emit a lot of heat at high temperature, and it is often used as a heat generating agent for steel ingot caps to improve the quality and recovery rate of steel ingots.
2. Used as an inoculant and spheroidizing agent in the cast iron industry. Cast iron is an important metal material in modern industry. It is cheaper than steel, easy to melt and smelt, has excellent casting properties and much better seismic resistance than steel. Especially for ductile iron, its mechanical properties meet or approach the mechanical properties of steel.
3. Used as a reducing agent in the production of ferroalloys. Not only the chemical affinity between silicon and oxygen is great, but the carbon content of high-silicon ferro silicon is very low. Therefore, high-silicon ferro silicon (or silicon alloy) is a commonly used reducing agent in the production of low-carbon iron alloys in the ferroalloy industry.
4. Use in other areas. The ground or atomized ferro silicon powder can be used as the suspended phase in the mineral processing industry. It can be used as a coating for welding rods in welding rod manufacturing. High-silicon ferro silicon can be used to make products such as silicone in the chemical industry.