Copper Elimination from the Molten Steel by Addition of Hydronitrogens

Liansheng Li~(1)) Changxiang Xiang~(1)) Jie Cao~(1)) Shiqi Ii~(1)) Eiji Ichise~(2)) 1)Applied Science School, UST Beijing, Beijing 100083, China 2) The Kyoto University, Kyoto, Japan

摘 要：<正> A novel method has been proposed to remove copper from molten steel by adding the compounds of hydrogen and nitrogen into the melt at normal pressure. Feasibility experiments were carried out in Mo-wire resistance furnace at 1600℃. The copper content of about 400 g 45 steel were reduced from 0.60% and 0.57% to 0.41% and 0.51% with 3.25g and 1.20 g NH₄Cl respectively, while the copper contents of about 300 g steel melt were reduced from 1.15% and 0.61% to 0.90% and 0.56% with 4.10 g and 2.00 g NH₂CONH₂. These results indicate that the proposed method is very promising to be put into practical and worthwhile of further study.

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