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采用Lix984萃取剂 ,对含铜铁锌酸性浸出液进行选择性萃取铜研究。结果表明 ,萃取剂浓度为 3%时 ,铜的萃取率可达到 99% ,且锌和铁共萃率低 ;萃取混合时间 >2min时 ,铜的萃取率达 96 % ,而铁和锌的萃取率 <5 % ;当相比 (O/A)为 1∶1时 ,铜的萃取效果最佳 ;随萃取值的增大 ,铜的萃取率升高 ,但为了避免萃取污物的大量产生 ,应控制萃取pH <2 .5。反萃试验结果表明 ,铜和铁的反萃率随着反萃剂浓度、反萃相比、反萃时间的增大而升高。
Selective extraction of copper from iron-zinc-zinc acid leachate using Lix984 extractant. The results show that the extraction rate of copper can reach 99% when the concentration of extractant is 3%, and the coextraction rate of zinc and iron is low. The extraction rate of copper is 96% when the mixing time is> 2min, The copper extraction rate was the best when the O / A ratio was 1: 1; the copper extraction rate increased with the increase of the extraction value, but in order to avoid the large amount of extraction contaminants, Should control the extraction pH <2 .5. Stripping test results show that the stripping rate of copper and iron with stripping agent concentration, stripping ratio, stripping time increases.