采用国产萃取剂N902从铜锌铁多金属矿浸出液中萃取分离Cu2+,考察了萃取剂体积浓度、萃取相比、振荡时间、萃取温度对铜萃取率的影响.在试验获得的较佳条件下对H2SO4含量为20.18g/L、30.38g/L的铜锌铁溶液分别进行3级逆流萃取,铜的萃取率分别为98.65％、96.50％,铜与锌、铁分离效果良好；以模拟电积后液为反萃原液进行四级逆流反萃,铜的反萃率约为88％,获得的反萃液可满足铜电积的要求.%The domestic extractant N902 was adopted to extract Cu2+ from the copper, zinc and iron polymetallic leaching solution, investigating the influences of extractant concentration, extraction phase proportion, oscillation time and extraction temperature on the extraction rate of copper. On the relatively good condition,3 stage counter current extraction was carried on for the copper,zinc and iron solution,the content of which was 20.18g/L and 30.38g/L. As a result,the extraction rate of copper was 98.65% and 96.50% respectively,having good separation effects. 4 stage counter current extrcation was carried on adopting simulation of electrodepositing solution as reverse extraction liquid,the extraction rate of which is about 88%. The reverse extraction liquid obtained can meet the requirements of copper electrodeposition
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