从镓-锗精矿中回收镓的试验研究  

Experimental Study on Recovery of Gallium From Gallium-germanium Concentrate

作　　者：普世坤[1,2] 严云南[3] 兰尧中[1,4] 

机构地区：[1]上海大学材料科学与工程学院,上海200072 [2]云南临沧鑫圆锗业股份有限公司,云南临沧677000 [3]赣南医学院药学院,江西赣州341000 [4]云南大学矿产开发与循环经济研究所,云南昆明650091

出　　处：《湿法冶金》2012年第5期300-302,共3页Hydrometallurgy of China

基　　金：国家自然科学基金资助项目(U1037603);云南省科学基金资助项目(2009CC011);科技型中小企业技术创新基金资助项目(11C26215305972)

摘　　要：研究了从镓-锗精矿中回收镓,考察了浸出温度、浸出时间对盐酸浸出镓的影响以及浸出液酸度、萃取次数、相比对镓萃取率的影响。结果表明:用7.95mol/L工业盐酸,在75℃下浸出镓-锗精矿2.5h,镓浸出率在93%以上;调节浸出液酸度,用磷酸三丁酯-260#溶剂油在1∶1相比条件下萃取镓,负载有机相用20g/LNaOH溶液反萃取,反萃取液用300g/L NaOH溶液调至碱性后电解,镓回收率达92%以上。Recovery of gallium from gallium-germanium concentrate was studied.The effect of leaching temperature and time on gallium leaching rate and effect of solution acidity and extraction time on gallium extraction was examined.The results show that gallium leaching rate was over 93% using industry hydrochloric acid of 7.95 mol/L at the conditions of leaching temperature of 75 ℃,leaching time of 2.5 hours,and recovery rate of gallium was over 92% at the conditions of solution acidity of 9.0 mol/L,phase ratio(Va∶Vo) of 3∶1,4 times extraction and back-extraction using 20 g/L NaOH solution and electrolyzing after adjusting pH using 300 g/L NaOH solution.

关 键 词：镓-锗精矿 浸出 溶剂萃取 镓 

分 类 号：TF803.2[冶金工程—有色金属冶金]