Research Progress on the Occurrence and Separation of Germanium from Coal

ZHANG Zhiyuan; TENG Daoguang; CAO Yijun; LI Peng

doi:10.13779/j.cnki.issn1001-0076.2022.06.002

2022 Vol. 42, No. 6

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Article navigation > Conservation and Utilization of Mineral Resources > 2022 > 42(6): 10-20

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ZHANG Zhiyuan, TENG Daoguang, CAO Yijun, LI Peng. Research Progress on the Occurrence and Separation of Germanium from Coal[J]. Conservation and Utilization of Mineral Resources, 2022, 42(6): 10-20. doi: 10.13779/j.cnki.issn1001-0076.2022.06.002

Citation:

ZHANG Zhiyuan, TENG Daoguang, CAO Yijun, LI Peng. Research Progress on the Occurrence and Separation of Germanium from Coal[J]. Conservation and Utilization of Mineral Resources, 2022, 42(6): 10-20. doi: 10.13779/j.cnki.issn1001-0076.2022.06.002

Research Progress on the Occurrence and Separation of Germanium from Coal

1.
School of Chemical Engineering, Zhengzhou University, Zhengzhou 450000, China
2.
Zhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450000, China

More Information

Corresponding author: LI Peng, zdhglipeng@zzu.edu.cn

Received Date: 15 November 2022

Publish Date: 26 December 2022

Abstract

Abstract

Germanium is a typical dispersive and strategic metal. Coal related germanium mineral resources in China have typical resource advantages, however there are still many challenges in the supernormal enrichment and extraction of germanium. The distribution characteristics, content and occurrence of germanium in coal were described, and the typical leaching methods of germanium in coal measures were summarized, such as direct leaching of germanium from raw coal by water metallurgy and microbial leaching, and leaching of germanium from fly ash by water leaching, inorganic acid leaching and organic acid leaching. Furthermore, the enrichment and separation methods of germanium from coal leaching liquid were summarized, including solvent extraction, ion exchange resin, supported liquid membranes and ion flotation. In addition, germanium could be separated from coal by dry distillation and volatilization, alkali melting neutralization, alloy process, AlCl₃ smelting, zinc powder reduction for germanium extraction, the existing problems of germanium separation were analyzed, and the development direction was prospected.
- germanium in coal /
- germanium /
- occurrence /
- leaching /
- enrichment /
- separation

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References

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