铜萃取剂中醛肟与酮肟比例对铜萃取性能的影响  

Effect of Ratio of Aldoxime to Ketoxime in Copper Extractant on Copper Extraction Performance

作　　者：余海城 YU Haicheng(Fujian Zijin Mineral Processing Pharmaceutical Co.,Ltd.,Longyan 364000,Fujian,China)

机构地区：[1]福建紫金选矿药剂有限公司,福建龙岩364000

出　　处：《有色金属（冶炼部分）》2024年第3期32-40,共9页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点研发计划项目(2022YFC2904604);江西省科技支撑计划工业领域重大项目(20152ACE50023)。

摘　　要：研究了铜萃取剂中不同醛肟与酮肟比例对铜萃取性能指标的影响,考察了萃取相比、浸液pH等对三种不同醛肟与酮肟比例新有机相萃取性能的影响,以及降解产物对有机相萃取性能的影响,开展了新有机相与某铜湿法冶炼厂运行有机相的混合试验。结果表明,不同醛肟与酮肟比例有机相对铜的萃取性能影响差异较大,其中醛肟酮肟=73新有机相具有最优萃取性能,反萃性能最弱;醛肟酮肟=6.5/3.5新有机相萃取与反萃性能次之;醛肟酮肟=64新有机相的反萃性能最优,萃取性能最弱;受运行有机相中降解产物改制的影响,三种有机相与运行有机相按体积比3∶1构成混合有机相反萃性能均获得了提升,其中以醛肟酮肟=6.53.5混合有机相兼具良好萃取与反萃性能,各条件下铜净传递量最优,更适用于某铜湿法冶炼厂生产运行。研究结果为铜湿法冶炼行业萃取工艺优化与适宜萃取剂选择给出了方向与参考。The effect of ratio of aldoxime to ketooxime in copper extractant on copper extraction performance was investigated.The influences of extraction phase ratio and pH value of leachate on the extraction properties of three new organic phase with different aldoximes ketoxime ratio,as well as the effects of degradation products on the extraction performance of organic phases were investigated.The mixing test of the new organic phase with the operating organic phase in a copper wet smelter was carried out.The results show that different proportion of aldoxime and ketoxime has a great difference on copper extraction performance,among which new organic phase with aldoxime ketoxime=73 has the best extraction performance and the weakest stripping performance.Aldoxime ketoxime=6.5/3.5 new organic phase extraction and stripping performance is second.Aldoxime ketoxime=64 new organic phase has the best stripping performance and the weakest extraction performance.Under the influence of the transformation of degradation products in the running organic phase,the stripping performance of the three organic phases and the running organic phase with the volume ratio of 3∶1 has been improved.Among them,the mixed organic phase with aldoxime ketoxime=6.53.5 has both good extraction and stripping performance,and the net transfer of copper is the best under all conditions,which is more suitable for the production and operation of a copper wet smelter.The research results provide direction and reference for the optimization of extraction process and the selection of suitable extractant in copper wet smelting industry.

关 键 词：铜萃取剂 醛肟 酮肟 配比 萃取性能 反萃性能 有机相降解产物 

分 类 号：TF811[冶金工程—有色金属冶金]