It is used as deoxidiser and alloying agent in steel making industry. In order to obtain the chemical composition of qualified steel and ensure the quality of steel, in the steelmaking and then must be deoxidised, silicon and oxygen between the chemical affinity is very large, and thus ferrosilicon is a strong deoxidiser for steelmaking for precipitation and diffusion deoxidisation.
Add a certain amount of silicon in steel, can significantly improve the strength, hardness and elasticity of steel, and therefore in the smelting of structural steel (containing silicon 0.40-1.75%), tool steel (containing SiO. 30-1.8%), spring steel (containing SiO. 40-2.8%) and transformer silicon steel (containing silicon 2.81-4.8%), also iron silica as an alloying agent to use. At the same time to improve the inclusions form to reduce the content of gaseous elements in the liquid steel, is to improve the quality of steel, reduce costs, saving iron effective new technology. Especially suitable for continuous casting steel deoxidation requirements, practice has proved that ferrosilicon not only meets the requirements of steel deoxidation, but also has the performance of desulphurisation and has the advantages of large specific gravity and strong penetration.
In addition, in the steelmaking industry, the use of ferrosilicon powder at high temperatures can release a lot of heat this feature, often used as ingot cap heating agent in order to improve the quality of steel ingots and recovery rate.
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