从废镍氢电池负极浸出液中回收稀土  

Recovery of Rare Earth From Leaching Solution of Waste Ni-MH Battery Negative Electrode

作　　者：廖春发[1] 胡礼刚 夏李斌[1] 

机构地区：[1]江西理工大学材料与化学工程学院,江西赣州341000 [2]南昌长力钢铁股份有限公司,江西南昌330012

出　　处：《湿法冶金》2011年第2期152-154,共3页Hydrometallurgy of China

基　　金：江西省教育厅资助项目(项目编号:GJJ09234)

摘　　要：研究了从废旧镍氢电池负极浸出液中以硫酸盐复盐形式沉淀稀土。考察了无水Na2SO4加入量、溶液pH、温度和时间等对稀土回收率的影响。结果表明:在pH=1.5、无水Na2SO4与稀土硫酸盐的质量比3∶1、温度60℃、反应时间2 min、充分搅拌后静置30 s条件下,浸出液中各稀土元素的回收率均在91%以上,镍、钴损失率不到1%。The key factors such as sodium sulfate anhydrous,temperature,pH and time were studied on recovery of rare earths from lixivium of waste Ni-MH battery negative electrode with double sulfate precipitation.Experimental results show that at the optimization conditions,recovery rate of rare earths is over 91%,and loss rate of Ni and Co isn＇t more than 1%.

关 键 词：镍氢电池 负极 稀土 回收 

分 类 号：X705[环境科学与工程—环境工程] TF845[冶金工程—有色金属冶金]