中文摘要：

研究了氨水体系浸出氧化锌矿制取金属锌的新工艺,并考察了温度、电流、异极距、锌质量浓度对锌电流效率及槽电压的影响及添加剂对锌板质量的影响.结果表明,氧化锌中的锌浸出率达98％,在浸矿前用石灰水对矿粉进行预处理可以提高氨的有效利用率.最佳电积工艺条件为：温度20～40℃、电流2.5A、异极距3.5 cm,明胶、TP、TNB加入量分别为0.1 g/L、0.1 g/L、10 mg/L,槽电压3.3V.电流效率94.33％,每吨锌耗电2 869 kWh,锌品位达99.58％.

英文摘要：

A new process to produce zinc from ammonia leaching solution of zinc oxide ores was studied.The effects of temperature,electricity,electrode space,and zinc mass concentration on current efficiency,and the influence of additives on quality of zinc board were investigated.The results show that zinc leaching rate in zinc oxide is 98％.The effective availability of ammonia is improved by pretreating limewash before leaching.The optimum electrowinning conditions include temperature of 20 ～ 40 ℃,electric current of 2.5 A,electrode space of 3.5 cm,dosage of gelatin,TP and TNB of 0.1 g/L,0.1 g/L and 10 mg/L respectively,and cell voltage of 3.3 V.The electrolytic efficiency is 94.33％,power consumption for one tonnage zinc is 2 869 kWh,and zinc grade of electrolyzing zinc is 99.58％.