Optimization of an innovative approach involving mechanical activation and acid digestion for the extraction of lithium from lepidolite

Nath&#225;lia Vieceli; Carlos A. Nogueira; Manuel F. C. Pereira; Fernando O. Dur&#227;o; Carlos Guimar&#227;es; Fernanda Margarido

doi:10.1007/s12613-018-1541-7

Volume 25 Issue 1

Jan. 2018

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2018 > 25(1): 11-19

Nathália Vieceli, Carlos A. Nogueira, Manuel F. C. Pereira, Fernando O. Durão, Carlos Guimarães, and Fernanda Margarido, Optimization of an innovative approach involving mechanical activation and acid digestion for the extraction of lithium from lepidolite, Int. J. Miner. Metall. Mater., 25(2018), No. 1, pp. 11-19. https://doi.org/10.1007/s12613-018-1541-7

Cite this article as:

Nathália Vieceli, Carlos A. Nogueira, Manuel F. C. Pereira, Fernando O. Durão, Carlos Guimarães, and Fernanda Margarido, Optimization of an innovative approach involving mechanical activation and acid digestion for the extraction of lithium from lepidolite, Int. J. Miner. Metall. Mater., 25(2018), No. 1, pp. 11-19. https://doi.org/10.1007/s12613-018-1541-7

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Research Article

Optimization of an innovative approach involving mechanical activation and acid digestion for the extraction of lithium from lepidolite

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Corresponding author:
Nathália Vieceli E-mail: nathalia.vieceli@tecnico.ulisboa.pt
Received: 8 January 2017; Revised: 25 August 2017; Accepted: 28 August 2017

Abstract

Abstract

The recovery of lithium from hard rock minerals has received increased attention given the high demand for this element. Therefore, this study optimized an innovative process, which does not require a high-temperature calcination step, for lithium extraction from lepidolite. Mechanical activation and acid digestion were suggested as crucial process parameters, and experimental design and response-surface methodology were applied to model and optimize the proposed lithium extraction process. The promoting effect of amorphization and the formation of lithium sulfate hydrate on lithium extraction yield were assessed. Several factor combinations led to extraction yields that exceeded 90%, indicating that the proposed process is an effective approach for lithium recovery.
- lepidolite;
- lithium;
- mechanical activation;
- acid digestion;
- optimization;
- extraction

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References

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