The Use Of Ferrosilicon

(1) It is used as Oxygen scavenger and alloying agent in 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 great, so ferrosilicon is a strong Oxygen scavenger for steelmaking, used for precipitation and diffusion deoxidation. Adding a certain amount of silicon in steel can significantly improve the strength, hardness and elasticity of steel. Therefore, ferrosilicon is also used as an alloying agent when smelting structural steel (containing silicon 0.40-1.75%), Tool steel (containing SiO.30-1.8%), spring steel (containing SiO.40-2.8%) and silicon steel for transformers (containing silicon 2.81-4.8%). Simultaneously improving the morphology of inclusions and reducing the content of gas elements in molten steel is an effective new technology to improve steel quality, reduce costs, and save iron. Especially suitable for the deoxygenation requirements of continuous casting molten steel, practice has proven that ferrosilicon not only meets the deoxygenation requirements of steelmaking, but also has desulfurization performance and advantages such as high specific gravity and strong penetration.
In addition, in the steelmaking industry, utilizing the characteristic of silicon iron powder being able to release a large amount of heat during high-temperature olefin firing, it is often used as a heating agent for steel ingot caps to improve the quality and recovery rate of steel ingots.