用高温焙烧—盐酸浸出法从粉煤灰中浸出镓  

Leaching of Gallium From Fly Ash by High Temperature Roasting—Hydrochloric Acid Leaching Method

作　　者：满剑奇 程立媛 李文慧 任川 赵昕 李彦恒 MAN Jianqi;CHENG Liyuan;LI Wenhui;REN Chuan;ZHAO Xin;LI Yanheng(College of Earth Science and Engineering,Hebei University of Engineering,Handan 056038,China;Analysis and Testing Laboratory Center,Hebei University of Engineering,Handan 056038,China;Hebei Collaborative Innovation Center of Coal Exploitation,Key Laboratory of Resource Exploration Research of Hebei Province,Hebei University of Engineering,Handan 056038,China;Hydrogeologial Bureau of China National Administration of Coal Geology,Handan 056008,China)

机构地区：[1]河北工程大学地球科学与工程学院,河北邯郸056038 [2]河北工程大学分析测试实验中心,河北邯郸056038 [3]河北工程大学河北省资源勘测研究重点实验室河北省煤炭开发协同创新中心,河北邯郸056038 [4]中国煤炭地质总局水文地质局,河北邯郸056008

出　　处：《湿法冶金》2022年第1期14-19,共6页Hydrometallurgy of China

基　　金：河北省科技厅重点研发项目(18393810D)。

摘　　要：研究了采用高温焙烧—盐酸浸出工艺从粉煤灰中浸出镓,考察了助剂(Na_(2)CO_(3),K_(2)CO_(3))与粉煤灰混合比例、焙烧温度、焙烧时间对粉煤灰高温焙烧的影响及浸出温度、盐酸浓度、固液质量体积比对镓浸出的影响。结果表明:Na_(2)CO_(3)与K_(2)CO_(3)(质量比3/1)的混合助剂与粉煤灰按质量比0.5/1混合,在950℃下焙烧2 h后,再用3 mol/L盐酸溶液在60℃、固液质量体积比1/10条件下浸出2 h,镓浸出率达93.43%,浸出效果较好。The leaching of gallium from fly ash using high temperature roasting—hydrochloric acid leaching process was investigated.The effects of the mixing ratio of agent(Na_(2)CO_(3),K_(2)CO_(3))and fly ash,roasting temperature and roasting time on high temperature roasting of fly ash,and effects of leaching temperature,hydrochloric acid concentration and solid mass-to-liquid volume ratio on leaching of gallium were examined.The results show that the leaching rate of gallium reaches 93.43%under the conditions that mixture of Na_(2)CO_(3) and K_(2)CO_(3)(mass ratio of 3/1)is mixed with fly ash at mass ratio of 0.5/1,roasting temperature is 950℃,roasting time is 2 h,and hydrochloric acid concentration is 3 mol/L,leaching temperature is 60℃,solid mass-to-liquid volume ratio is 1/10,leaching time is 2 h.The leaching effect for gallium is good.

关 键 词：粉煤灰 助剂 镓 浸出 

分 类 号：TF803.21[冶金工程—有色金属冶金] TF843.1