Ferrosilicon is an alloy of iron and silicon. Ferrosilicon is made of iron silicon alloy made of coke, steel chips, quartz (or silica) as raw material and smelted by electric furnace. Because silicon and oxygen are easy to combine into silicon dioxide, so ferro silicon is often used as deoxidizer in steelmaking. At the same time, due to the release of a lot of heat when SiO2 is generated, it is beneficial to improve the temperature of molten steel at the same time of deoxidation. At the same time, ferrosilicon can also be used as an alloying element additive, widely used in low alloy structural steel, spring steel, bearing steel, heat resistant steel and electrical silicon steel, ferrosilicon in ferroalloy production and chemical industry, often used as a reducing agent.
Although ferrosilicon has many functions, in order to better understand ferrosilicon, the application of ferrosilicon in steelmaking industry will be briefly introduced. Ferrosilicon is used as deoxidizer and alloying agent in steelmaking industry. In order to obtain qualified chemical composition of steel and ensure the quality of steel, in the later stage of steel making must be deoxidized, the chemical affinity between silicon and oxygen is very large, so iron silicon is a strong deoxidizer for steel making for precipitation and diffusion deoxidization. Adding a certain amount of silicon to the steel can significantly improve the strength, hardness and elasticity of the steel, and iron silicon is also used as an alloying agent. At the same time, it is an effective new technology to improve the quality of steel, reduce the cost and save the use of iron by improving the shape of inclusions and reducing the content of gas elements in liquid steel. Ferrosilicon not only meets the requirements of deoxidation in steelmaking, but also has desulfurization performance and has the advantages of heavy ratio and strong penetration.
