从废旧碱性锌锰电池极性材料中浸出锌的试验研究  

Experimental Reseach on Leaching of Zinc From Electrode Material in Spent Alkaline Zn-Mn Battery

作　　者：孙铜[1] 伍碧[1] 彭蜀君[1] 孙维义[1] 丁桑岚[1] 苏仕军[1] 

机构地区：[1]四川大学建筑与环境学院,四川成都610065

出　　处：《湿法冶金》2013年第4期252-255,共4页Hydrometallurgy of China

基　　金：新世纪优秀人才支持计划项目(NCET-09-0570);四川省杰出青年基金项目(2011JQ0008);四川省博士后基金资助项目

摘　　要：针对从废旧碱性锌锰电池极性材料酸浸锌时选择性差以及锌、锰分离困难等问题。研究了在NH3.H2O体系和NH3.H2O-(NH4)2SO4体系中浸出锌。结果表明:在NH3.H2O体系中,氨水质量分数为25%、液固体积质量比为15∶1、浸出时间40 min条件下,锌浸出率最高仅为45%;在NH3.H2O-(NH4)2SO4体系中,氨水质量分数为25%、硫酸铵质量浓度为200g/L、液固体积质量比为15∶1、浸出时间为20min条件下,锌浸出率最高达96%。氨水中加入硫酸铵可以促进锌的选择性浸出。The leaching of zinc from electrode materials of spent alkaline Zn-Mn battery using acids was not ideal, and it was difficult to separate zinc from manganese in leaching solution. The leaching mechanism of zinc from electrode materials in ammonia and NH3 · H2O-（NH4 ）2 SO4 system respectively were investigated. The results showed that in ammonia system, the leaching rate of zinc only reached 45% when the electrode materials were leached for 40 min at room temperature using 25 % ammonia aqueous solution at V（liquid）： m （solid） of 15 ： 1. After adding （NH4） z SO4 into ammonia aqueous system, the leaching rate of zinc reached 96% when the electrode materials were leached for 20 min at the conditions of room temperature, （NH4）2SO4 mass concentration of 200 g/L and V（liquid） ： re（solid） of 15 ： 1 using 25% ammonia aqueous solution.

关 键 词：废旧碱性锌锰电池 极性材料 氨水-硫酸铵体系 锌 浸出 

分 类 号：TF803.21[冶金工程—有色金属冶金] TF813