CONTINUOUS/PERIODAL PRODUCTION OF STEEL FROM STEEL IN A CONVERTER WITH COAL AND IRON ORE

摘要

A method for manufacturing molten steel wherein iron ore and coal are continuously supplied onto molten metal (2) containing carbon of 1% or less while blowing oxygen gas is being introduced onto the molten metal through a lance (4). Simultaneously with this operation, stirring gas is being introduced into the molten metal at a rate of 0.05 to 0.5 Nm3/min/ton of molten metal through a tuyere (5). The slag and the molten steel produced, is continuously or periodically discharged from tapping hole (6).