热镀锌渣中浸渣硫酸浸出锌的工艺研究  

Sulfuric Acid Leaching of Zinc from Residue After Neutral Leaching of Hot Dip Galvanization Slag

作　　者：伍永国 颜文斌[1,2,3] 刘海宇 李红湘 陈蓝艳 WU Yong-guo;YAN Wen-bin;LIU Hai-yu;LI Hong-xiang;CHEN Lan-yan(College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan,China;Key Laboratory of Mineral Cleaner Production and Exploit of Green Functional Materials in Hunan Province,Jishou 416000,Hunan,China;National Demonstration Center for Experimental Chemistry Education(Jishou University),Jishou 416000,Hunan,China)

机构地区：[1]吉首大学化学化工学院,湖南吉首416000 [2]矿物清洁生产与绿色功能材料开发湖南省重点实验室,湖南吉首416000 [3]化学国家级实验教学示范中心(吉首大学),湖南吉首416000

出　　处：《矿冶工程》2020年第4期103-105,共3页Mining and Metallurgical Engineering

基　　金：2018年(吉首大学)研究生科研创新实验项目(JGY201850)。

摘　　要：以锌含量为17.22%的热镀锌渣中浸渣为原料,在水热反应釜中以硫酸为浸出剂浸出其中锌。结果表明,最佳浸出条件为:硫酸体积浓度15%、浸出温度180℃、液固比6∶1、浸出时间8 h,此条件下锌浸出率可达到99.71%;浸渣主要成分为硫酸铝盐和硫酸钙。The residue containing 17.22%Zn obtained from neutral leaching of hot dip galvanization slag was taken as raw material and leached with sulfuric acid as the leaching agent in a hydrothermal autoclave reactor.It is shown that the leaching reaction at the temperature of 180℃for 8 h,with the sulfuric acid at a volume concentration of 15%and liquid-solid ratio of 6∶1,resulted in the final leaching rate of zinc up to 99.71%and the obtained leaching residue predominately composed of aluminum sulfate and calcium sulfate.

关 键 词：热镀锌渣 中浸渣 铝酸锌 硫酸 浸出 锌 

分 类 号：X751[环境科学与工程—环境工程] TQ09[化学工程]