从粉煤灰中酸溶铝的试验研究  

Research on Leaching of Aluminum From Fly Ash Using Sulfuric Acid

作　　者：徐育[1] 徐本军[1] 黄彩娟[1] 

机构地区：[1]贵州大学材料科学与冶金工程学院,贵州贵阳550025

出　　处：《湿法冶金》2013年第1期47-49,共3页Hydrometallurgy of China

摘　　要：在自制的高压反应釜中采用酸溶法从粉煤灰浸出铝,考察了酸质量分数、浸出温度、浸出时间等因素对Al2O3溶出率的影响。结果表明:在浸出温度180℃、浸出时间5h、液固体积质量比5∶1、酸过量系数1.45、硫酸初始质量分数35%时,粉煤灰中Al2O3溶出率达90%以上。The leaching of aluminum from fly ash using acid solution in self-made autoclave was studied. The influence of acid concentration, acid excessive coefficient, leaching temperature and leaching time on leaching of Al2O3 were investigated. Results showed that the leaching rate of Al2O3 was over 90% at the conditions of leaching temperature of 180 ℃, leaching time of 5 h, liquid-solid ratio of 5 ： 1,acid excessive coefficient of 1.45 and initial concentration of sulfuric acid of 35%.

关 键 词：粉煤灰 氧化铝 浸出 硫酸 

分 类 号：X773[环境科学与工程—环境工程] TF821[冶金工程—有色金属冶金]