用电积法从氰化提金尾液中回收铜的工艺实验研究  

Copper electrowinning from gold plant barren solution

作　　者：王碧侠[1] 兰新哲[1] 宋永辉[1] 

机构地区：[1]西安建筑科技大学贵金属工程研究所

出　　处：《黄金》2008年第6期45-48,共4页Gold

基　　金：国家"八六三"课题"提金氰化物污染治理与综合回收成套技术及装备开发"资助(2003AA32X090)

摘　　要：研究了用电积法从含铜氰化尾液中回收铜的工艺参数。先对配制的铜质量浓度为12.07g/L的氰化物溶液进行电沉积回收铜实验,分别采用钛板及石墨板作为阴极和阳极材料,研究了溶液中铜浓度、电积液温度、电积时间、电流密度及溶液流速等因素对铜回收率及电流效率的影响,确定了合适的工艺参数。根据确定的工艺参数,对来自某金矿铜质量浓度为12.40g/L的氰化溶液,在50℃下电积8h,电流密度取75 mA/cm2,溶液循环速度取30mL/m in,阴极产物得到了铜质量分数为99.87%的铜-锌合金,总的电能消耗为2 938kW.h/t。In this paper, process parameters of copper electrowinning from a gold plan barren solution containing copper cyanide was investigated. A synthetic cyanide solution with copper concentration of 12.07g/L was used. Titanium and graphite plates were taken as cathode and anode respectively for copper electrowinning study. The influences of copper concentration, solution temperature, electrolysis time, current density and flow rate on copper recovery and current efficiency were studied in detail and the proper operation parameters were studied. Copper electrowinnng from the industrial barren solution with a concentration of 12.40g/L was performed under the condition of current density of 75 mA/cm^2, flow rate of 30mL/min and 50℃ for 8 hours. An alloy with copper concentration of 99.87% was obtained at the cathode with a total energy consumption of 2 938 kW·h/t.

关 键 词：铜回收 金 氰化物 电沉积 

分 类 号：TF803.27[冶金工程—有色金属冶金]