摘要
考察了相比、水相pH、混合时间等因素对LIX84I萃取铜的影响,结果表明:这些因素对铜的萃取率都有一定的影响,最优化的条件是有机相为30%LIX 84I+70%煤油、室温、相比=2∶1、出口水相pH值=2.0、搅拌速度=910r/m in、萃取级数为3级,每级的时间为3m in。对铜进行三级萃取和一级反萃,可以得到符合电积要求的硫酸铜溶液,萃取率和反萃取率分别可以达到94.6%和97.8%。
In this article, the effects of phase ratio, equilibrium aqueous phase pH, and equilibration time on the copper extraction with LIX84I were mainly studied. The experiment shows that all these factors influence on copper extraction efficiently. The optimum extraction is 30% oranic phase and 70% kerosene, at room temperature, phase ratio（O/A） =2/1, The pH value of the equilibrium aqueous phase =2.0, agitation speed = 910 r/min, 3 stages of counter extraction, and equilibration time is 3 min. The copper sulfate solution suitable for electrodepostion can be obtained via 3 stages of counter current extraction, and 1 stage of stripping. The extraction rate and the stripping rate can arrive at 94. 6% and 97. 8% respectively.
基金
上海市科学技术委员会科研计划项目(042312006)
湖北省地质处置环境保护重点实验室资助(HEWDEP-2003-09)
东华大学青年基金资助
