The molten steel which refinement mannered null primarily it decarbonizes refines of the molten steel which

摘要

PROBLEM TO BE SOLVED: To provide a method for smelting a steel having ≤0.10 mass% carbon content without causing any pick-up by adding a carbon-containing waste refractory at the time of a secondary refining in a ladle.;SOLUTION: When the molten steel is primarily refined by using a converter, then is secondarily refined b using a ladle refining equipment, the carbon- containing waste refractory is added into slag on the molten steel at the period when the carbon content of the molten steel in the ladle is ≥0.01 mass%.;COPYRIGHT: (C)2001,JPO