中文摘要：

以实验室自制的二元胺类化合物AMPY-1为萃取剂,研究了水相pH、氯离子浓度、硫酸根离子浓度对铜镍金属离子分配比的影响,测定了单一金属溶液的铜镍分离系数,模拟了镍电解液的除铜效果。结果表明,增加水相pH和氯离子浓度有利于铜离子的萃取,而增加水相硫酸根离子浓度则不利于铜离子的萃取;在pH 4、相比O/A为1∶1、（25±1）℃萃取10min,氯化铜与氯化镍、氯化铜与硫酸镍的铜镍分离系数分别为2 027和716;针对氯盐体系和氯盐—硫酸盐混合体系模拟镍电解液,在相比O/A=1∶1、（25±1）℃下萃取10min,其除铜后液含铜分别为1.1 mg/L和1.8 mg/L;按相比O/A=1∶5、（25±1）℃经3级半逆流萃取后,由氯盐体系和氯盐—硫酸盐混合体系得到的负载有机相,其铜镍质量比分别为156和45,均满足镍电解液深度净化除铜的要求。

英文摘要：

The effects of pH value,concentration of chloride and sulfate ion in aqueous phase on distribution ratio of copper or nickel ions were investigated with laboratory-prepared diamine compound AMPY-1as extractant.Separation coefficients between copper and nickel ions in mono-metal solutions were determined.Removal of copper from simulated nickel anode electrolyte was investigated.The results show that rise of aqueous pH values and chloride concentration is in favor of extraction of copper ions,while rise of aqueous sulfate concentration can lead to decrease of extraction of copper ions.Separation coefficient between copper and nickel in solution of copper chloride and nickel chloride,and copper chloride and nickel sulfate is 2 076 and 716respectively under the optimum conditions including pH value of 4,O/A=1∶1,temperature of（25±1）℃,and time of 10 min.Based on chloride solution and mixture of sulfate-chloride solutions,copper concentrations in raffinate is 1.1 mg/L and 1.8 mg/L respectively under the optimum conditions of O/A=1∶1at（25±1）℃ for 10 min.Cu/Ni mass ratio in loaded organic phase extracted from chloride solution and sulfate-chloride solutions is 156 and 45respectively by three-stage semi-countercurrent extraction under the optimum conditions of O/A=1∶5at（25±1）℃for 10 min.The above mentioned results can meet the requirements of deep removal of copper from nickel anode electrolyte.