络合沉降法提取粉煤灰中的镓  

Extraction for gallium from fly ash by complexation determination

作　　者：李金海[1] 曹明艳[1] 陈学文[1] 邵家琴[1] 

机构地区：[1]毕节学院化学与化学工程学院,贵州省毕节市551700

出　　处：《中国煤炭》2013年第5期85-88,125,共5页China Coal

基　　金：西南大学基金项目(XDJK2010E002);毕节地区行政公署-贵州大学循环经济研究院项目(ZK005);贵州省固体废弃物综合利用科技创新人才团队项目(黔科合人才团队(2010)4011号)

摘　　要：通过正交实验得出了单宁络合沉降法提取粉煤灰中镓的优化条件,试验条件下处理液与单宁溶液的料液体积比为2∶1较佳,处理液体积与活性炭的质量比为V∶m=5∶1较佳,络合时间为8h,浸提温度为60℃,浸提酸度为pH=3,通过该条件能得到含镓量达50.15%的氢氧化镓固体产品,镓的提取率高达85%。The optimization conditions of tannin complexation determination method for extracting gallium from fly ash was found by orthogonal test. The best test conditions, volume ratio of processing fluid and tannin solution material liquid was 2 ： 1, the volume of processing liquid and the mass of the activated carbon is V ：m=5 ： 1, complexing time was 8 h, lixiviation temperature was 60℃, lixiviation acidity was pH= 3. Hydrogen gallium oxide solid products with 50.15% gallium quantity was obtained and the extraction efficiency for gallium was 85%.

关 键 词：络合 沉降 粉煤 灰镓 

分 类 号：TQ536.4[化学工程—煤化学工程]