硫酸钴浸出液中用N902萃取铜生产试验研究

采用N902对硫酸钴浸出液中铜的萃取进行了研究,考察了萃取相比（O∶A）、萃原液中铜含量、萃取时间对铜萃取率的影响,以及反萃相比（O∶A）、反萃时间、酸度、反萃液铜浓度对铜反萃率的影响,确定了适宜的铜萃取生产条件,当铜离子浓度为6～7g/L时,用15%的N902萃取硫酸介质中的铜,1级铜萃取率可达95%;用新配制的200 g/L的硫酸对负载铜有机相进行循环反萃,1级铜反萃率可达95%。

Industrial Experimental Research on Extraction of Copper by N902 in Cobalt Sulfate Leaching Solution

In the research,N902 is adopted for extraction of the copper in cobalt sulfate leaching solution,the following items are also investigated： effect of extraction phase ratio（O∶A）,copper content in original solution and extraction time on copper extraction rate,as well as the effect of stripping phase ratio（O∶A）,stripping time,acidity and strip liquor＇s copper concentration on copper stripping rate,and then the proper production conditions for copper extraction is determined,when the concentration of copper ion is 6~7 g/L,it is better to use 15% N902 to extract copper in sulfuric acid medium,so the first stage extraction rate of copper can be 95%;if new prepared 200 g/L sulfuric acid is used for circular stripping of copper loaded organic phase,the first stage stripping rate of copper can reach 95%.