METHOD FOR OPERATING CONVERTER UTILIZING BLEND INCLUDING PRESS-FORMED SCRAP OF WASTE CAR

申请公布号：JP2002256322(A)

申请号：JP20010061406

申请日期：2001.03.06

申请公布日期：2002.09.11

申请人：

NKK CORP

发明人：MIZUKAMI HIDEAKI

分类号：C22B1/248;C21C5/28;C22B7/00;(IPC1-7):C21C5/28

主分类号：C22B1/248

摘要：<p>PROBLEM TO BE SOLVED: To stably keep the copper concentration of produced molten steel to not higher than a product standard without developing defective ignition when blowing is started in the case of producing the molten steel with oxygen blowing by blending the press-scrap of waste car as part of iron source. SOLUTION: In the case of producing the molten steel in a converter by firstly charging the press-formed scrap obtained with the press-formation of the waste car, then charging molten iron and thereafter supplying oxygen, the blending ratio R(%) of the press-formed scrap is regulated to the range satisfying the following formula (1) against the copper component standard X (mass%) in the produced molten steel and the apparent bulk densityρ(kg/m<3> ) of the press-formed scrap is regulated to >=400 kg/m<3> and in the range of satisfying the formula (2) against the blending ratio R. R<=X/0.0069-1.74...(1)ρ>=200R-500...(2).</p>

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