黑铜泥浸出渣铋回收工艺研究  

Studyon Bismuth Recovery Process of Black Copper Mud Leaching Residue

作　　者：邓成武 DENG Chengwu(Jiangxi Copper Industry Group Co.,Ltd.,Guixi Smelter,Guixi 335424,China)

机构地区：[1]江西铜业集团有限公司贵溪冶炼厂,江西贵溪335424

出　　处：《湖南有色金属》2024年第3期30-33,共4页Hunan Nonferrous Metals

摘　　要：试验研究了黑铜泥浸出渣铋回收工艺,试验表明:黑铜泥浸出渣预处理控制液固比6、温度90℃、pH值1、煮洗反应1h,可大幅降低预处理渣含铜;氯盐酸浸控制游离酸度110 g/L、Cl-浓度130 g/L、液固比4、反应温度85℃下搅拌反应2 h,铋浸出率可达97%以上;中和沉铋控制反应温度85℃、pH值2.5,反应时间2 h,中和后液含铋仅33 mg/L,实现了铋的较好回收。The recovery process of bismuth from black copper mud leaching residue was studied.The results showed that the pretreatment of black copper mud leaching residue with a liquid-solid ratio of 6,a temperature of 90℃and a pH value of 1 for 1 hour can significantly reduce the copper content of the pretreatment residue.The chloroacetic acid leaching was controlled at a free acidity of 110 g/L,Cl-concentration of 130 g/L,a liquid-solid ratio of 4,and a reaction temperature of 85℃for stirring reaction for 2h,and the bismuth leaching rate can reach over 97%.The neutralization and precipitation of bismuth was controlled at a reaction temperature of 85℃and pH value of 2.5 for 2 hours.The post-neutralization liquid contained only 33 mg/L bismuth,achieving a good recovery of bismuth.

关 键 词：黑铜泥浸出渣 浸铋 沉铋 铋 回收 

分 类 号：TF803.21[冶金工程—有色金属冶金]