氯气浸出-电积工艺从铜渣中提取镍  

Ni Extraction from Cu Residue by Chlorine Leaching-Electrowinning Process

作　　者：薛文颖[1] 申勇峰[2] 赵宪明[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,沈阳110004 [2]东北大学材料织构与各向异性教育部重点实验室

出　　处：《有色金属》2008年第1期77-79,共3页Nonferrous Metals

基　　金：国家自然科学基金资助项目(47202010)

摘　　要：研究通过氯气浸出-净化-不溶阳极电积法生产电镍的工艺过程。结果表明,镍和铜的浸出率分别为99.3%和98.5%,经过净化的浸出液用400 A.m-2的电流密度不溶阳极电积,所得电镍纯度可达99.935%,电积过程的阴极电流效率为98%。在电积过程中氯气可以处理回收并返回作为浸出剂,使生产成本及环境污染降低。The process of chlorine leaching-purification-eletrowinning for nickel extraction from copper residue is investigated. The results show that the leaching rate of nickel and copper can be up to 99.3% and 98.5 %, respectively. The cathode nickel with a purity of 99. 935 % can be obtained and the current efficiency （ηc） is as high as 98 % in electrowinning process of purified leaching solution with 400 A·m^-2 current density. The chlorine gas from electrolysis can be recovered and circled in the whole process. The operation cost and the pollution to environment can be decreased simultaneously.

关 键 词：冶金技术 铜渣 氯气浸出 电积 镍 

分 类 号：TF815[冶金工程—有色金属冶金] TF111.3