Ferrosilicon is an alloy of iron and silicon. Ferrosilicon is an iron silicon alloy made from coke, steel chips and quartz (orsilica) by electric furnace smelting. Because silicon and oxygen are easy to synthesize silicon dioxide, ferrosilicon is often used as deoxidizer in steelmaking. At the same time, due to the large amount of heat released during the formation of SiO2, it is
also beneficial to improve the temperature of molten steel while deoxidizing.