锌焙砂氨法制取高纯锌

journal6 ›› 2003, Vol. 24 ›› Issue (3): 45-49.

锌焙砂氨法制取高纯锌

(中南大学冶金科学与工程学院，湖南长沙 410083)

出版日期:2003-09-15 发布日期:2012-11-07

Preparation of High-Purity Zinc From Zinc Calcine by an Ammonia Process

Online:2003-09-15 Published:2012-11-07
About author:YANG Sheng-hai(1969-),male,was born in Wugang County,Hunan Province,Dr.,lecturer of Department of Metallurgical Science and Engineering,Central South University,majoring in fine metallurgy and preparing highpurity metal.

摘要/Abstract

摘要：利用NH3-NH4Cl水溶液浸出锌焙砂来制取高纯锌.Zn的平均浸出率约93%，浸出液中的杂质元素，如铜、镉、铅，用锌粉两段逆流能够完全置换除去.不同电流密度下的电流效率大于93.8%，槽电压约3.0 V，每千克锌消耗电能2.550～2.650 kW.电锌含锌量大于99.999%，杂质元素Cu,Cd,Co,Ni,Fe,As,Sb的含量均小于0.000 1%，Pb的小于0.000 3%.

关键词： 高纯锌, 氨, 氯化铵, 锌焙砂

Abstract: 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 out completely by using zinc powder with two-stage countercurrent.At different current density,the current efficiency was higher than 93.8%.During electrowinning cell voltage was about 3.0 V and power consumption ranged from 2.550 to 2.650 kW per kilogram zinc.The zinc content in the electrowinned zinc was more than 99.999%,and the contents of the impurities of Cu,Cd,Co,Ni,Fe,As and Sb were lower than 0.000 1% respectively,and Pb was lower than 0.000 3%.

Key words: high-purity zinc, ammonia, ammonium chloride, zinc calcine

杨声海, 唐谟堂, 何静, 姚维义. 锌焙砂氨法制取高纯锌[J]. journal6, 2003, 24(3): 45-49.

YANG Sheng-Hai, TANG Mo-Tang, HE Jing, YAO Wei-Yi. Preparation of High-Purity Zinc From Zinc Calcine by an Ammonia Process[J]. journal6, 2003, 24(3): 45-49.

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