粉煤灰中战略金属镓的提取与回收研究进展

镓被广泛应用于半导体、催化、医疗等多个领域。随着半导体行业的蓬勃发展，对镓需求量的日益增长促使人们寻找新的来源。从粉煤灰中回收镓不仅可以减少环境污染和资源浪费，还可以一定程度上缓解对镓资源日益增长的需求。综述了粉煤灰中镓的赋存形式、浸出工艺和镓提取分离方法的最新研究进展，重点介绍了溶剂萃取法和吸附法用于粉煤灰中镓资源回收的现状，总结了现有技术存在的问题，并对粉煤灰中镓资源的回收进行了展望，提出了粉煤灰中镓和其他伴生元素协同提取的资源化利用方向。

Research progress on extraction and recovery of strategic metal gallium from coal fly ash

Gallium(Ga) is widely used in semiconductor, catalysis, medical and other fields. With the vigorous development of the semiconductor industry, the increasing demand for Ga has prompted people to find new sources. Recycling Ga from coal fly ash can not only reduce environmental pollution, but also alleviate the growing demand for Ga. This review summarized the Ga occurrence in coal fly ash, leaching process and separation methods of Ga from coal fly ash. Meantime, this paper highlighted the current research status of solvent extraction and adsorption for the recovery of Ga from coal fly ash. The existing problems were discussed. Finally, the recovery of Ga resources from coal fly ash was prospected and the synergetic recovery of Ga and other multi elements from coal fly ash had been proposed.