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The extraction of lithiumLithium from lepidolite, a lithiumLithium-bearing mica mineral, is gaining importance due to the rising demand for lithiumLithium-ion batteries. This study investigates the effectiveness of direct acid leaching using hydrochloric acid (HCl) in extracting lithiumLithium from lepidolite. Various parameters including acid concentration, leaching temperatureTemperature, solid-to-liquid ratio, and leaching duration were studied to optimize lithiumLithium extraction. Experimental results for lithiumLithium extraction efficiency were: 1.0 mol/L HCl, a leaching temperatureTemperature of 75 °C, a solid-to-liquid ratio of 1:10, and a leaching duration of 2 h, gave a lithiumLithium recovery rate of over 70%. CharacterizationCharacterization of the leach residue by X-ray diffraction (XRD) and scanning electron microscopyScanning electron microscopy (SEM) revealed minute structural changes and mineralogical transformations. The product as characterized demonstrated that direct acid leaching with hydrochloric acid is a hardly efficient method for effective lithiumLithium extraction from a typical lepidolite, thus offering the potential for industrial raw material in lithiumLithium-ion batteries.

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Development of Optimal Extraction Conditions of Indigenous Lepidolite Ore as Raw Material for Lithium-ion Batteries

  • 会议论文

  • 发表日期：

    2025年

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  • Alafara A. Baba,
  • Daud T. Olaoluwa,
  • Aishat Y. Abdulkareem,
  • Jude O. Majasan,
  • Adeniyi S. Aremu,
  • Rasheed A. Agava

摘要

The extraction of lithiumLithium from lepidolite, a lithiumLithium-bearing mica mineral, is gaining importance due to the rising demand for lithiumLithium-ion batteries. This study investigates the effectiveness of direct acid leaching using hydrochloric acid (HCl) in extracting lithiumLithium from lepidolite. Various parameters including acid concentration, leaching temperatureTemperature, solid-to-liquid ratio, and leaching duration were studied to optimize lithiumLithium extraction. Experimental results for lithiumLithium extraction efficiency were: 1.0 mol/L HCl, a leaching temperatureTemperature of 75 °C, a solid-to-liquid ratio of 1:10, and a leaching duration of 2 h, gave a lithiumLithium recovery rate of over 70%. CharacterizationCharacterization of the leach residue by X-ray diffraction (XRD) and scanning electron microscopyScanning electron microscopy (SEM) revealed minute structural changes and mineralogical transformations. The product as characterized demonstrated that direct acid leaching with hydrochloric acid is a hardly efficient method for effective lithiumLithium extraction from a typical lepidolite, thus offering the potential for industrial raw material in lithiumLithium-ion batteries.