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安太堡11号煤层中锂镓分布赋存的差异性研究

刘云霞 孙蓓蕾 刘超 武杰

刘云霞, 孙蓓蕾, 刘超, 武杰. 安太堡11号煤层中锂镓分布赋存的差异性研究[J]. 燃料化学学报(中英文), 2022, 50(7): 798-807. doi: 10.19906/j.cnki.JFCT.2022008
引用本文: 刘云霞, 孙蓓蕾, 刘超, 武杰. 安太堡11号煤层中锂镓分布赋存的差异性研究[J]. 燃料化学学报(中英文), 2022, 50(7): 798-807. doi: 10.19906/j.cnki.JFCT.2022008
LIU Yun-xia, SUN Bei-lei, LIU Chao, WU Jie. Differences in the distribution and occurrence of lithium and gallium in the No.11 coal seam from the Antaibao mining district[J]. Journal of Fuel Chemistry and Technology, 2022, 50(7): 798-807. doi: 10.19906/j.cnki.JFCT.2022008
Citation: LIU Yun-xia, SUN Bei-lei, LIU Chao, WU Jie. Differences in the distribution and occurrence of lithium and gallium in the No.11 coal seam from the Antaibao mining district[J]. Journal of Fuel Chemistry and Technology, 2022, 50(7): 798-807. doi: 10.19906/j.cnki.JFCT.2022008

安太堡11号煤层中锂镓分布赋存的差异性研究

doi: 10.19906/j.cnki.JFCT.2022008
基金项目: 国家自然科学基金(U1810202, 41872177, 42172193)和国家重大专项(2021YFC2902002)资助
详细信息
    通讯作者:

    E-mail: sunbeilei@tyut.edu.cn

  • 中图分类号: TD983

Differences in the distribution and occurrence of lithium and gallium in the No.11 coal seam from the Antaibao mining district

Funds: The project was supported by National Natural Science Foundation of China (U1810202, 41872177, 42172193)and National Key Research and Development Program of China (2021YFC2902002)
  • 摘要: 为针对性分析煤层中锂、镓的分布赋存特征,选取安太堡11号煤层为研究对象,统计了锂、镓在各灰分级别、硫分级别及纵向分层中的分布特征。通过飞行时间二次离子质谱仪与带能谱的扫描电镜,分析了微区范围内锂、镓与常量元素的结合关系,讨论了煤层中锂、镓赋存状态差异性及影响因素。结果表明,锂富集于高灰煤中,镓在不同灰分级别与硫分级别煤中含量变化不显著。在纵向煤层中,锂在陆源物质供给充分时具有较高含量,镓分布较为均匀未呈现明显变化规律。微区原位分析中,锂的赋存与铝硅酸盐密切相关,镓可赋存于高岭石、勃姆石、黄铁矿、钠盐和钾盐中。煤层中锂与稳定元素锆的相关性系数为0.894,两者主要来源于物源区酸性岩浆岩。镓由于过渡元素的性质显示亲石性与亲硫性,在高灰煤与高硫煤中均具有较高含量,较强的元素迁移性使其在煤分层中趋于均匀分布。
  • FIG. 1678.  FIG. 1678.

    FIG. 1678.  FIG. 1678.

    图  1  安太堡11号煤层中灰分、硫分、锂和镓元素含量

    Figure  1  Concentration of Ad, St,d, Li and Ga in coal benches for the No.11 coal seam from the Antaibao mining district

    图  2  安太堡11号煤层中St,d、Th/U、V/Zn、Li和Ga的纵向分布

    Figure  2  Vertical variation of St,d, Th/U, V/Zn, Li and Ga in the No.11 coal seam from the Antaibao mining district

    图  3  11-12样品中锂、硅、铝、钠、钾、钙、镁、铁和碳的TOF-SIMS元素分布

    Figure  3  TOF-SIMS chemical maps of Li, Si, Al, Na, K, Ca, Mg, Fe and C in sample 11-12

    图  4  11-14样品中细胞充填状高岭石的扫描电镜照片及元素分布

    Figure  4  SEM images of cell-filling kaolinite and the elements distribution in sample 11-14

    图  5  11-11样品中硫化物的扫描电镜图及元素分布

    Figure  5  SEM images of sulfide and the elements distribution in sample 11-11

    图  6  11-14样品中钠盐与钾盐颗粒的扫描电镜照片及元素分布

    Figure  6  SEM images of NaCl, KCl and the elements distribution in sample 11-14

    图  7  安太堡11号煤层中锂(a)、镓(b)与锆元素相关性分析散点图

    Figure  7  Correlation analysis between Li (a), Ga (b) and Zr in the No.11 coal seam from the Antaibao mining district

    表  1  锂、镓在各灰分级别与硫分级别煤中的含量分布

    Table  1  Concentration of Li and Ga for coal samples in various ash fractions and sulfur fractions

    FractionSampleStatisticsLi/ (μg·g−1)Ga/ (μg·g−1)FractionSampleStatisticsLi/ (μg·g−1)Ga/ (μg·g−1)
    Ultra-low ash 11-3 range low sulfur 11-6, 11-12, 11-14 range 143−260 19.7−20.7
    average 47.2 40.2 average 194 20.2
    Low ash 11-4, 11-5, 11-7, 11-8, 11-10, 11-15, 11-16, 11-17 range 57.9−113 14.2−26.3 medium sulfur 11-4, 1-5, 11-9, 11-10, 11-16, 11-17 range 77.6−103 14.2−26.3
    average 84.6 19.6 average 86.4 20.2
    Medium ash 11-9 range medium to high sulfur 11-7, 11-8, 11-15 range 57.9−113 15−22.7
    average 81.2 18.1 average 79.8 17.7
    High ash 11-12 range high sulfur 11-3, 11-11 range 42.6−47.2 13.9−40.2
    average 260 19.7 average 44.9 27.1
    Ultra-high ash 11-14, 11-6, 11-11 range 42.6−179 13.9−20.7
    average 122 18.3
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出版历程
  • 收稿日期:  2021-12-19
  • 修回日期:  2022-01-24
  • 录用日期:  2022-01-26
  • 网络出版日期:  2022-02-12
  • 刊出日期:  2022-08-01

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