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Study on Enhanced Extraction and Recovery of Lithium and Gallium Through Thermal Activation of Coal Gangue.

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Τίτλος: Study on Enhanced Extraction and Recovery of Lithium and Gallium Through Thermal Activation of Coal Gangue.
Συγγραφείς: Shi, Mengmeng, Zhang, Lei, Pan, Jinhe, Gao, Yijie, Zhou, Changchun
Πηγή: JOM: The Journal of The Minerals, Metals & Materials Society (TMS); Jul2026, Vol. 78 Issue 7, p5961-5974, 14p
Θεματικοί όροι: Lithium, Gallium, Thermodynamics, Volatization, Leaching, Heat treatment, Extraction (Chemistry)
Περίληψη: This study has developed a thermal activation-acid leaching process to extract Li and Ga from coal gangue. Sequential chemical extraction, thermodynamic calculation, and in-situ SEM were employed to track the occurrence, migration, and transformation of Li and Ga during the thermal activation process. The results showed that 93.9% of Li and 81% of Ga were silicate-bound in kaolinite. After thermal activation, leaching ratios reached 91.27% (Li) and 95.49% (Ga), as residual Li and Ga transformed into more reactive ion-exchangeable and oxide-bound forms. Thermodynamic analysis revealed that the Li-containing phase gradually transformed from LiAlSi4O10 to LiAlO2 and Li2O as the temperature increased. Above 1700°C, a small amount of LiOH(g) is produced. Ga was relatively stable in an oxidative activation system and existed in the form of Ga2O3. Above 1600°C, gallium transformed into volatile species (Ga2O, GaO, Ga), with H2S promoting Ga2S formation and a reducing atmosphere facilitating volatilization at lower temperatures. [ABSTRACT FROM AUTHOR]
Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Βάση Δεδομένων: Complementary Index
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  – Url: https://dx.doi.org/doi:10.1007/s11837-026-08328-z
    Name: EDS - Springer Nature Journals (s7799221)
    Category: fullText
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An: 194996199
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PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 1060.76818847656
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Study on Enhanced Extraction and Recovery of Lithium and Gallium Through Thermal Activation of Coal Gangue.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Shi%2C+Mengmeng%22">Shi, Mengmeng</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Lei%22">Zhang, Lei</searchLink><br /><searchLink fieldCode="AR" term="%22Pan%2C+Jinhe%22">Pan, Jinhe</searchLink><br /><searchLink fieldCode="AR" term="%22Gao%2C+Yijie%22">Gao, Yijie</searchLink><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Changchun%22">Zhou, Changchun</searchLink>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: JOM: The Journal of The Minerals, Metals & Materials Society (TMS); Jul2026, Vol. 78 Issue 7, p5961-5974, 14p
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Lithium%22">Lithium</searchLink><br /><searchLink fieldCode="DE" term="%22Gallium%22">Gallium</searchLink><br /><searchLink fieldCode="DE" term="%22Thermodynamics%22">Thermodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Volatization%22">Volatization</searchLink><br /><searchLink fieldCode="DE" term="%22Leaching%22">Leaching</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+treatment%22">Heat treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Extraction+%28Chemistry%29%22">Extraction (Chemistry)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study has developed a thermal activation-acid leaching process to extract Li and Ga from coal gangue. Sequential chemical extraction, thermodynamic calculation, and in-situ SEM were employed to track the occurrence, migration, and transformation of Li and Ga during the thermal activation process. The results showed that 93.9% of Li and 81% of Ga were silicate-bound in kaolinite. After thermal activation, leaching ratios reached 91.27% (Li) and 95.49% (Ga), as residual Li and Ga transformed into more reactive ion-exchangeable and oxide-bound forms. Thermodynamic analysis revealed that the Li-containing phase gradually transformed from LiAlSi<subscript>4</subscript>O<subscript>10</subscript> to LiAlO<subscript>2</subscript> and Li<subscript>2</subscript>O as the temperature increased. Above 1700°C, a small amount of LiOH(g) is produced. Ga was relatively stable in an oxidative activation system and existed in the form of Ga<subscript>2</subscript>O<subscript>3</subscript>. Above 1600°C, gallium transformed into volatile species (Ga<subscript>2</subscript>O, GaO, Ga), with H<subscript>2</subscript>S promoting Ga<subscript>2</subscript>S formation and a reducing atmosphere facilitating volatilization at lower temperatures. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1007/s11837-026-08328-z
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 5961
    Subjects:
      – SubjectFull: Lithium
        Type: general
      – SubjectFull: Gallium
        Type: general
      – SubjectFull: Thermodynamics
        Type: general
      – SubjectFull: Volatization
        Type: general
      – SubjectFull: Leaching
        Type: general
      – SubjectFull: Heat treatment
        Type: general
      – SubjectFull: Extraction (Chemistry)
        Type: general
    Titles:
      – TitleFull: Study on Enhanced Extraction and Recovery of Lithium and Gallium Through Thermal Activation of Coal Gangue.
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            NameFull: Shi, Mengmeng
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            NameFull: Zhang, Lei
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            NameFull: Pan, Jinhe
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            NameFull: Gao, Yijie
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            NameFull: Zhou, Changchun
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          Dates:
            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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              Value: 78
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              Value: 7
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            – TitleFull: JOM: The Journal of The Minerals, Metals & Materials Society (TMS)
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