粉煤灰中镓富集与浸出工艺研究  

Study on Process of Enrichment and Leaching of Gallium from Fly Ash

作　　者：吕早生[1] 张路平[1] 帅清昱[1] 武燕娟[1] 陶康[1] 任肖丽[1] 

机构地区：[1]武汉科技大学化学工程与技术学院,湖北武汉430081

出　　处：《化学与生物工程》2014年第7期66-69,共4页Chemistry & Bioengineering

摘　　要：为从粉煤灰中提取金属镓,首先对粉煤灰进行浮选,然后在微波条件下对浮选富集后的粉煤灰进行酸浸,讨论了捕收剂种类、微波时间、盐酸浓度、反应温度和液固比对镓浸出率的影响。通过单因素实验确定优化的粉煤灰中镓富集与浸出工艺条件为:选择十八胺为捕收剂、微波时间15min、盐酸浓度10%、反应温度70℃、液固比5∶1,在此条件下,镓浸出率为84.21%,比常规酸浸法提高了10.13%。To extract gallium from fly ash,the flotation of fly ash was carried out and then the acid leaching was done under microwave irradiation.The effects of floating agent,microwave time,hydrochloric acid concen-tration,reaction temperature and liquid-solid ratio were investigated.Octadecyl amine was used as the best col-lector by flotation test for fly ash.The optimal conditions were obtained by single factor experiment as follows：microwave time was 15 min,hydrochloric acid concentration was 10%,reaction temperature was 70 ℃ and liq-uid-solid ratio was 5∶1（mL∶g）.Under above conditions,the leaching rate of gallium was 84.21%,which en-hanced 1 0.1 3% more than that of conventional acid leaching.

关 键 词：粉煤灰 镓 微波 酸浸 浮选 

分 类 号：O614.371[理学—无机化学]