The main task of steelmaking is to adjust the content of carbon and alloy elements in the steel to the specified range according to the quality requirements of the steel to reduce the content of P, S, H, O, N and other impurities below the allowable limit.
The steelmaking process is essentially an oxidation process. The excess carbon in the charge is oxidized, burned into CO gas and escaped, and other Si, P, Mn, etc. enter the slag after oxidation. Part S enters the slag, and part S generates SO2 for discharge. When the composition and temperature of molten steel meet the process requirements, the steel can be tapped. In order to remove excess oxygen in steel and adjust chemical composition, deoxidizer and ferroalloy or alloy elements can be added.
