In this article a new process of using ammonia and ammonium chloride solution to leach zinc calcine and electrowinning high-purity zinc has been developed successfully. The average leaching ratio of zinc was about 93%. The impurities, such as Cu, Cd and Pb, in the filtrate were cemented completely by using zinc powder with two-stage countercurrent. At different current density, the current efficiency is higher than 93.8%. During electrowinning cell voltage is about 3.0 volt and power consumption ranges from 2550 to 2650kWh/t zinc. The zinc content in the electrowinned zinc is more than 99.999%, and the contents of the impurities of Cu, Cd, Co, Ni, Fe, As and Sb are lower than 0.0001% respectively, and lead is lower than 0.0003%.
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