摘要
用电积－部分酸化法从溶剂萃取法处理金矿贫液产出的高浓度铜氰溶液中电积铜和锌，研究了电积工艺条件如阴极电流密度、电积液中游离CN－浓度、铜浓度、电积液的温度、pH值和电积时间等对阴极电流效率和合金中铜含量的影响规律，确定了电积黄铜或粗铜的最佳工艺条件，获得了含Cu71％的黄铜（Cu－Zn合金）或含Cu98．6％的粗铜，每电积5～6h需将电积液部分酸化脱去游离CN－，电积和部分酸化交替进行可使平均阴极电流效率维持在63％以上．
Studies on electrowinning copper or Cu-Zn alloy in a strong copper cyanide solution, produced by solvent extraction for treating a poor gold liquor, was described in thispaper. The influence of electrowinning conditions such as electric current density, temperatureof solution, pH, free cyanide concentration, copper conceatration and electrowinning time onthe behavior of electric current efficiency and Cu content in alloy was studied respectively andthe optimum conditions for electrowinning copper or brass were determined. The brass (av-erage Cu 71%) and copper (average Cu 98.6%) were obtained under the optimum conditions.The free cyanide in the solution had to be removed by partial acidizing after every 5 hoursof electrowinning operation. The average current efficiency of alloy was beyond 63% whileelectrowinning and partial acidizing were operated alternatively
出处
《化工冶金》
EI
CSCD
北大核心
2000年第3期257-262,共6页
关键词
铜
电积
金矿贫液
锌高铜氰溶液
copper
cyanide
recovery
electrowinning
acidizing
