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image of Characterization of Lithium-containing Fly Ash Derived from Coal-fired Power Plants in Guizhou Province, China

Abstract

Background

Coal-fired power plants, such as those located in Guizhou, are generating substantial amounts of fly ash. This fly ash is rich in lithium, a highly valuable metal utilized in numerous industrial applications. Effective extraction of these metals necessitates a thorough understanding of their characteristics within the fly ash.

Methods

Multiple analytical techniques were used to study fly ash's physicochemical properties. Meanwhile, wet magnetic separation and acid-base methods are employed to separate its mineral phases.

Results

The fly ash mainly contains mullite, glass, and iron microspheres, showing spherical particle morphology. It's rich in O, Si, Al, Fe, C, and oxides like SiO, AlO, FeO. Most particles are smaller than 20 μm. Lithium in the ash existed as Li-O-M compounds, mainly in the non-magnetic and glass phases.

Conclusion

Overall, these findings have deepened our understanding of fly ash and the distribution of lithium within it, providing a foundation for the recovery of lithium and other valuable elements.

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2025-01-29
2025-04-02

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Characterization of Lithium-containing Fly Ash Derived from Coal-fired Power Plants in Guizhou Province, China
Bentham Science Publishers ; https://doi.org/10.2174/0115734110349242241206065556
/content/journals/cac/10.2174/0115734110349242241206065556
/content/journals/cac/10.2174/0115734110349242241206065556
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  • Article Type:     Research Article
Keywords: fly ash ; Power plant ; characteristics ; lithium

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