用Lix973选择性萃取氨性浸出液中的铜和钴  

Selective solvent extraction of copper and cobalt from ammonia leaching solution containing copper and cobalt using Lix973

作　　者：楚广[1] 陈小红[1] 杨天足[1] 

机构地区：[1]中南大学冶金与环境学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2016年第6期1830-1834,共5页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51174240)~~

摘　　要：采用Lix973作萃取剂,硫酸作反萃剂,从氨性浸出液中萃取分离铜和钴。研究萃取剂体积分数、有机相与水相的体积比(相比)、混合时间、反萃剂质量浓度、反萃相比和反萃时间对萃取分离铜和钴的影响,确定获得Lix973萃取分离铜的优化条件。研究结果表明最佳萃取铜的条件为:室温下有机相与水相的体积比1:1,混合时间2 min,萃取剂Lix973体积分数5%。在此实验条件下,铜的一级萃取率达到99.29%;最佳反萃铜的条件为:室温下反萃相比2:3,反萃时间1 min,硫酸质量浓度160 g/L。在此实验条件下,铜的一级反萃率为96.13%。Copper was separated from cobalt in ammonia leaching solution by solvent extraction using Lix973 as extractant and sulfuric acid as stripping agent. The effects of extractant volume fraction, volume ratio of organic phase to aqueous phase（V（O）/V（A））, contacting time, mass concentration of stripping agent, V（O）/V（A） of stripping on extractive separation of copper from cobalt were investigated, and the optimum conditions of extractive copper using Lix973 were also obtained. The results show that the optimal extraction and stripping condition is as follows. V（O）/V（A） is 1：1,contacting time is 2 min, volume fraction of extractant Lix973 in the organic phase is 5%, V（O）/V（A） of stripping is 2：3,stripping contacting time is 1 min, concentration of stripping agent（sulfuric acid） is 160 g/L at ambient temperature.Under the optimized condition, the one-stage extraction and stripping efficiency of copper are 99.29% and 96.13%,respectively.

关 键 词：溶剂萃取 Lix973 氨性溶液 铜钴分离 

分 类 号：TF803.2[冶金工程—有色金属冶金]