发明名称 Process for making steel
摘要 A process for making steel in an electric arc furnace includes providing a molten charge which is a melt composed of a high carbon ferrous metal in the electric arc furnace by one of preparing the melt in the furnace or introducing the melt into the furnace, the high carbon ferrous metal being composed of less than 3% carbon, less than 0.2% silicon, and less than 0.2% manganese, and the melt having a temperature of at least 1375° C.; adding to the molten charge provided in the furnace a solid metallic charge composed of least one material selected from the group consisting of scrap steel, hot briquetted iron, direct reduced iron, and iron ore to provide a charge mixture; refining the charge mixture by melting in the absence of gaseous oxygen to provide a molten steel; and superheating, finishing and tapping the molten steel into a ladle for subsequent casting thereof.
申请公布号 US6424671(B1) 申请公布日期 2002.07.23
申请号 US20000673131 申请日期 2000.12.05
申请人 NATIONAL RESEARCH DEVELOPMENT CORPORATION 发明人 BANERJEE SHILOWBHADRA
分类号 C21C5/52;(IPC1-7):F27D17/00;H05B7/22 主分类号 C21C5/52
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