De nitriding molten steel during its production by jointly but separately injecting powdered carbon and oxygen into the molten bath.

摘要

De nitriding molten steel during its production by introduction of oxygen comprises injecting into the molten bath, jointly but separately into the same zone, oxygen and carbon in a form capable of being blown, and preferably carbon powder. Generated locally in the bath are carbon monoxide bubbles from these two elements, which are then charged with the de nitriding nitrogen. A stoichiometric adjustment of the carbon and oxygen inputs enable a constant carbon de nitriding in the bath.