Germanium is a kind of rare metal widely used in high-tech fields such as infrared technology,optical fibers,and semiconductors,and is recognized as a strategic resource.Due to the scarcity and dispersed distribution of germanium resources,its extraction technology is constrained by material sources,making enrichment challenging.Therefore,the rational development of primary and secondary germanium resources to ensure the stable development of the germanium industry has become an urgent global demand.The solvent extraction method has advantages in the field of wet recovery of germanium due to its high separation factor,high efficiency,good selectivity,simple process,and the possibility of large-scale continuous production,and has made significant progress in theoretical and application research.The recent advancements in the application of solvent extraction for germanium recovery was reviewed,and the extraction mechanisms and performance of various extractant were analyzed.The current challenges were discussed,and the future development trend and application prospect were prospected.
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