| 摘要 |
PURPOSE: A method for dephosphorizing molten steel in converter steel making is provided, which is characterized in that lime stone powder is injected into molten steel being laden in oxygen stream flowing through oxygen lance. CONSTITUTION: In a dephosphorization method where oxygen is injected into molten steel (2) in converter (1) and powdery dephosphorizer is injected into the molten steel being carried in oxygen stream, the method is characterized in that lime stone powder with a particle size distribution ranging from 0.1 to 1.0 mm is injected in an amount of less than 2.5 kg/t·molten steel/min into molten steel.
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