(1.中南工业大学冶金物理化学研究所， 长沙 410083;
2.白银有色金属公司， 白银730900)
摘 要: 在净化铜电解废液工艺流程中，控制阴极电势值，使铜砷优先析出，并抑制 氢气与砷化氢的析出，以达到净化电解液的目的。控制阴极电势脱铜砷电积法的脱铜电流效率达到80%以上，电积后液中铜含量小于0.5 g/L，砷含量小于1 g/L，该方法具有 节能与环保双重效益。
关键字: 铜电解液 阴极电势 砷
（1.Institute of Metallurgical Physicochemistry and Materials,
Central South University of Technology, Changsha 410083
2.Baiying Company of Non-ferrous Metal, Baiying 730900）
Abstract:In order to avoid the evolution of arsine in the process of purifying waste copper electrolyte, the electrowinning of controlling cathodic potential has been proposed. By controlling the value of cathodic potential, copper and arsenic can be first separated and then hydrogen and arsine can not be evolved. In small test the value of current efficiency reached 80%. In the solution after eletro-
winning copper content was less than 1 g/L, arsenic content less than 0.5 g/L. The dual benefit in both environment protection and economization of energy could be acquired by the purification process.
Key words: copper electrolyte cathodic potential arsenic
