从镍氢电池正极酸浸液中萃取分离镍钴  

Extraction Separation Ni & Co From Ni-MH Battery Anode Acidic Leaching Liquor

作　　者：田磊[1] 常卿卿[1] 李红超[1] 欧阳成[1] 

机构地区：[1]江西理工大学冶金与化学工程学院,江西赣州341000

出　　处：《湿法冶金》2011年第4期320-322,共3页Hydrometallurgy of China

摘　　要：考察了萃取剂用量、萃取剂皂化率、相比、萃取时间及pH等因素对从镍氢电池正极酸浸液中萃取分离钴镍的影响。试验结果表明:以8%Cyanex272+92%煤油为萃取剂,在pH=5.0、有机相皂化率70%、Vo∶Va=1∶1、萃取时间3min、温度25℃条件下,钴萃取率达90%左右,Ni萃取率只有1%左右,二者分离效果较好,工艺运行稳定。Influences of extractant dosage, saponification rate, phase ratio, extraction time and pH on separation of cobalt and nickel from Ni-MH battery anode acidic leaching liquor were examined. The distribution of Ni and Co in Cyanex272 was studied. Experimental results showed that optimized process conditions for separating Ni ＆ Co from the solution were 8 % Cyanex272 ＋ 92 % kerosene, pH of 5.2,saponification rate of 70%,Vo ： Va of 1 ： 1,extraction time of 3 min,temperature of 25 ℃. At the conditions,the extraction rate of cobalt and nickel were about 90% and 1% ,respectively.

关 键 词：镍氢电池 正极 酸浸液 镍 钻 溶剂萃取 

分 类 号：TF803.21[冶金工程—有色金属冶金]