乳状液膜法分离提取Cu^(2+)

Separation of Cu 2+ by emulsion liquid membrane

研究了以Ｌｉｘ９８４为流动载体的乳状液膜法分离提取低品位蓝铜矿浸出液中Ｃｕ２＋，考察了各种因素对Ｃｕ２＋分离提取率的影响结果表明，由Ｌｉｘ９８４（体积分数６％）、ＥＣＡ４３６０Ｊ（体积分数５％）和磺化煤油组成的膜相，３ｍｏｌ·Ｌ－１ＨＣｌ为内水相，浸出液ｐＨ值为３～６，油内比Ｒｏｉ＝１∶１，乳水比Ｒｅｗ＝１∶５，提取时间６ｍｉｎ后，Ｃｕ２＋提取率几近１００％，纯度可达９９％以上。

The separation of Cu 2+ from low-grade azurite leaching solution by emulsion liquid membrane was studied.Factors affecting separation of Cu 2+ were investigated. Experimental results showed that when the sulfonating kerosene containing Lix984(60ml/L) and ECA4360J(50ml/L) was used as oil phase;3mol/L HCl as interal aqueous phase;pH of leaching solution was 3～6; R oi =1∶1; R ew =1∶5; t =6min,the recovery,purity and concentration of Cu 2+ were 100%,over 99% and 18～19g/L,respectively.