粉煤灰资源化提取研究进展

Research progress of resource extraction from fly ash

粉煤灰作为煤炭燃烧过程中主要的伴生产物,其资源化利用对煤炭工业可持续发展具有重要意义。文章主要介绍了粉煤灰基本理化性质及其资源化提取现状,包括提取未燃炭、空心微珠、磁性微珠、氧化铝、稀土元素、锂元素、镓元素和铀元素。探讨了粉煤灰资源化提取存在的问题,并给出了合理的建议。

As the main associated product of coal combustion,the utilization of coal fly ash is of great significance to the sustainable development of coal industry.The basic physical and chemical properties of coal fly ash and the present situation of resource extraction are introduced,including the extraction of unburned carbon,hollow microspheres,magnetic microspheres,alumina,rare earth elements,lithium,gallium and uranium elements.And the problems are discussed and reasonable suggestions are given for the sustainable and healthy development of the resource extraction from coal fly ash.