从粉煤灰提取铝铁新工艺研究  

Experimental study on extraction of aluminium ferric from coal fly ash

作　　者：佟志芳[1] 邹燕飞[1] 李英杰[1] 

机构地区：[1]江西理工大学材料与化学工程学院,江西赣州341000

出　　处：《轻金属》2009年第1期13-16,共4页Light Metals

基　　金：江西省教育厅资助项目(赣教技字2006〔196〕号)

摘　　要：以粉煤灰为原料,探讨了粉煤灰中铝铁的提取工艺,通过正交实验及验证实验得出了焙烧活化和酸浸的最佳工艺条件。实验结果表明,最佳焙烧活化条件为:焙烧时间1h、粉煤灰∶KF(质量比)为20∶4、焙烧温度为800℃;酸浸条件为:浸出温度为100℃、浸出时间为2h、浸出酸浓度6mol/L、液固比为4∶1,粉煤灰铝铁浸出率可达到96.92%。表明该工艺从粉煤灰提取铝铁具有较好的效果。This dissertation utilized coal fly ash as materials, discussed extraction conditions, and gained the optimum conditions of extracting aluminum iron from coal fly ash through orthogonal experiment and verification test. The best condition of roasting activation is： roasting time I h, mass ratio of coal fly ash to KF 20：4, roasting temperature 800 ℃ . The best condition of acid leaching is： leaching temperature 100℃ , leaching time 2 h, concentration of hydrochloric acid 6mol/L, Liquid - to - soLid ratio 4 ： 1. Under this condition, the leaching rate is 96.92%. It shows that the extraction of aluminum ferric from coal fly ash has good effect.

关 键 词：粉煤灰 正交实验 浸出率 

分 类 号：TF821[冶金工程—有色金属冶金]