| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for deoxidizing molten steel with magnesium-base flux at a low cost and with high efficiency, which produces only little amount of slag. SOLUTION: In a refining method for performing the deoxidation in the molten steel by directly blowing magnesium vapor together with carrier gas, the refining efficiency of the magnesium is improved by changing the flowing rate of the magnesium according to oxygen concentration in the molten steel to control the partial pressure of the magnesium in the blowing gas, or by changing the blow-flowing rate of the magnesium according to the oxygen concentration in the molten steel to control the partial pressure of the magnesium in the blowing gas. COPYRIGHT: (C)2003,JPO
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