Ferrosilicon is an iron alloy composed of iron and silicon. Ferrosilicon is an iron silicon alloy made by smelting coke, steel shavings, quartz (or silica) as raw materials in an electric furnace. Due to the easy synthesis of silicon dioxide from silicon and oxygen, ferrosilicon is often used as a deoxidizer in steelmaking. At the same time, due to the release of a large amount of heat during the generation of SiO2, deoxidation is also beneficial for increasing the temperature of molten steel. Meanwhile, ferrosilicon can also serve as an alloying element additive and is widely used in low alloy structural steel, spring steel, bearing steel, heat-resistant steel, and electrical silicon steel. Ferrosilicon is commonly used as a reducing agent in ferroalloy production and chemical industry.