METHOD FOR MELTING HIGH CARBON STEEL USING BOTTOM-BLOWN CONVERTER

摘要

PROBLEM TO BE SOLVED: To provide a method for melting high carbon steel using a bottom- blown converter capable of employing a catch-carbon method without increasing an unnecessary manufacturing cost. ;SOLUTION: A hot metal which is dephosphorized in advance is desulfurized with a substance containing metallic magnesium followed by slag-off, and then, charged in a bottom-blown converter, decarburized and refined, and blown out at the carbon concentration in the vicinity of the final target carbon concentration of a product, and tapped. Further preferably, metal ores containing an alloy composition are added in the converter to reduce the hot metal during the decarburizing and refining operation, and the alloy composition is recovered in the molten metal.;COPYRIGHT: (C)1999,JPO