Copper Removal from Molten Steel by Gasification

查看全文 作　　者：Li [1]Liansheng;Li [1]Shiqi;Xiang [1]Changxiang;Cao [1]Jie;Liu [1]Keming;Li [1]Suqin 机构地区：[1]University of Science and Technology Beijing 出　　处：《Journal of Iron and Steel Research(International)》索引1999年第6卷第2期,共4页 基　　金：supported by the National Foundation of Natural Science of China 摘　　要：A novel method is proposed to enhance the gasification and removal of copper from molten steel by adding ammonium salts or urea into molten steel under normal pressure.The decopperization experiments were conducted in a molybdenum-wire resistance furnace at 1 873 K.The copper content of about 400 g of a mild steel was reduced from 0.49%(mass fraction,the same below) and 0.51% to 0.31% and 0.38% using 0.7 g of NH_4C1 and 0.5 g of(NH_4)_2C_2O_4 respectively,while the copper content of the molten steel was reduced from 0.61%to 0.56% using 2.00 g of NH_2CONH_2. 关 键 词：MOLTEN steel copper REMOVAL AMMONIUM SALT