湿法冶金Issue(5)：309-311,3.
用硫酸从粉煤灰中直接浸出氧化铝
Direct Leaching of Alumina From Fly Ash Using Sulfuric Acid
摘要
Abstract
Direct leaching of Al2 O3 from circulating fluid bed fly ash using sulfuric acid was researched . The effect of leaching temperature ,time and sulfuric acid concentration on leaching rate of Al2 O3 were examined .T he experimental results show that the leaching temperature and time influence markedly the leaching rate of Al2 O3 ,and effect of sulfuric concentration is not obvious .When temperature is 180℃ ,leaching time is 5 h ,the ratio between liquid volumetric and solid mass is 5∶1 and sulfuric acid initial concentration is 3 .7 mol/L ,the leaching rate of Al2 O3 and Fe2 O3 can reach 94 .16% and 95 .1% , leaching rate of other impurities are lower .关键词
循环流化床/粉煤灰/硫酸/浸出/氧化铝Key words
circulating fluid bed/fly ash/sulfuric acid/leaching/alumina分类
矿业与冶金引用本文复制引用
陈朝轶,吕莹璐,李军旗,宋强..用硫酸从粉煤灰中直接浸出氧化铝[J].湿法冶金,2013,(5):309-311,3.基金项目
贵州省科技厅国际合作项目（黔科合外G字20137007）、贵阳市科技局项目（筑科合［2012103］69）与（筑科合［2012205］6-4）资助。 （）
