从粉煤灰中提取氧化铝技术进展  

Current Situation of Alumina Extraction from Fly Ash

作　　者：朱辉 谢贤[1] 李博琦 黎洁 ZHU Hui;XIE Xian;LI Boqi;LI Jie(Faculty of Land Resource Engineering, Kunming Uniwersity of Science and Technology, Kunming 650093, China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《矿产保护与利用》2020年第6期155-161,共7页Conservation and Utilization of Mineral Resources

基　　金：云南省应用基础研究计划面上项目(2018FB086);广东省矿产资源开发和综合利用重点实验室开放基金项目(SK-201903)。

摘　　要：粉煤灰是煤燃烧后产生的主要固体废弃物,大量堆积危害严重。从粉煤灰中提取氧化铝能同时解决我国面临的铝资源短缺以及粉煤灰堆积问题。从酸法、碱法、酸碱联合法三个方向综述了当前提取氧化铝的工艺,分析了各种方法的长处与不足,并展望了从粉煤灰中提取氧化铝的前景。Fly ash is a main solid waste produced by coal combustion.The large number of accumulation hazards are serious.The extraction of alumina from fly ash can solve the shortage of aluminum fly ash and the accumulation of fly ash in China at the same time.In this paper,some popular processes of extracting alumina from fly ash are reviewed from three general directions:acid method,alkali method and acid-base combination method.The advantages and disadvantages of various methods were analyzed.The prospect of extracting alumina from fly ash was prospected.

关 键 词：粉煤灰 氧化铝 酸法 碱法 酸碱联合法 

分 类 号：TD926.42[矿业工程—选矿]