The removal of S from molten metal by chemical injection, usually Mg or CaC3.

The process by which sulfur and sulfur compounds are removed from gases or liquid hydrocarbon mixtures.

Operation that injects a chemical mixture into a ladle full of hot metal to remove sulfur prior to its charging into the Basic Oxygen Furnace. Sulfur enters the steel from the coke in the blast furnace smelting operation, and there is little the steel-maker can do to reduce its presence. Because excess sulfur in the steel impedes its welding and forming characteristics, the mill must add this step to the steel-making process.