粉煤灰酸法提取氧化铝过程的机械研磨活化研究  

Study on Mechanical Grinding Activation Fly Ash and Acid Leaching of Aluminium Oxide

作　　者：吴艳[1] 翟玉春[1] 尹振[1] 季芳[1] 

机构地区：[1]东北大学材料冶金学院,辽宁沈阳110004

出　　处：《矿冶工程》2009年第1期71-73,77,共4页Mining and Metallurgical Engineering

基　　金：国家科技部"973"项目(G199904690-4)

摘　　要：利用机械研磨对粉煤灰进行了活化,并对其进行了酸法溶出氧化铝的试验。详细研究了研磨活化前后粉煤灰的微观形貌和结构变化,酸浸结果表明,机械研磨可以很好激发粉煤灰中玻璃相氧化铝的化学活性,可以将氧化铝的溶出率提高到74.5%。Fly ash was actived by a method of mechanical grinding, and then some leaching tests were conducted to extract the aluminium oxide from the ash in acid solutions. The structural and micromorphological changes of the ash were analyzed before and after grinding activation. The leaching results indicate that the chemical activities of grass phase aluminium oxide in the ash could be excited by the grinding method. The leaching rate of the aluminium oxide in the ash could increase to 74.5%.

关 键 词：粉煤灰 机械研磨 活化 酸法溶出 氧化铝 

分 类 号：TF111[冶金工程—冶金物理化学]