五家沟矿区5号煤中伴生元素地球化学特征

李进孝; 张珂; 王珍珍; 高鹏鹏; 张绍韡; 赵存良

doi:10.19751/j.cnki.61-1149/p.2020.02.009

五家沟矿区5号煤中伴生元素地球化学特征

1. 河北工程大学地球科学与工程学院, 河北邯郸 056038;
2. 山西省地质矿产研究院, 山西太原 030000

基金项目:

河北省自然科学基金项目“煤系伴生‘三稀’金属元素富集机理”（D2016402104）

详细信息

作者简介:
李进孝(1995-),男,青海门源人,硕士研究生,主要从事煤系伴生元素研究。E-mail:lijinxiao1010@163.com

通讯作者:
赵存良(1982-),男,博士,副教授,研究方向:成矿规律与成矿预测。E-mail:zhaocunliang@hebeu.edu.cn

中图分类号: P595
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出版历程
- 收稿日期: 2019-06-02
- 修回日期: 2019-11-10
- 网络出版日期: 2022-07-28
- 发布日期: 2020-06-04

Geochemical Characteristics of Associated Elements in No.5 Coal of Wujiagou Coalfield

1. School of Earth Science and Engineering, Hebei University of Engineering, Handan 056038, Hebei, China;
2. Institute of Geology and Mineral Resources of Shanxi Province, Taiyuan 030000, Shaanxi, China

摘要

摘要: 为了研究大同煤田南部煤中伴生元素的地球化学特征，运用矿物学、煤地球化学以及岩石学等学科的理论和研究方法，利用X射线荧光光谱分析（XRF）、电感耦合等离子质谱分析（ICP-MS）、X射线衍射分析（XRD）、扫描电镜+能谱分析（SEM-EDS），对五家沟矿区5号煤中伴生元素的含量及赋存特征进行研究。结果表明，五家沟5号煤中常量元素Al、Si、Ca、Fe含量较高，占到灰分总量的95%以上。Al主要以高岭石的形式存在，Si以黏土矿物和石英的形式赋存于煤中，煤中Ca的主要载体是方解石，Fe在煤中主要以黄铁矿的形式存在。煤中微量元素Li富集，Ga、Sr、Zr、Nb、Hf、Ta轻度富集。锂和镓主要赋存于高岭石中；铌和钽赋存于黏土矿物中，部分可能赋存于伊利石中；锆和铪赋存于黏土矿物中，还有部分赋存于金红石内。
- 五家沟 /
- 伴生元素 /
- 赋存特征 /
- 地球化学
Abstract: In order to study the geochemical characteristics of the associated elements in the Southern Datong Coalfield, this paper analyzed the content and occurrence characteristics of associated elements in No.5 coal in Wujiagou Coalfield by using of X-ray fluorescence spectrometry (XRF), inductively coupled plasma mass spectrometry (ICP-MS), X-ray diffraction analysis (XRD), scanning electron microscopy and energy spectrum analysis (SEM-EDS).The results show that the contents of Al, Si, Ca and Fe were enriched in Wujiagou No.5 coal, accounting for more than 95% of the total ash content. The Al mainly exists in kaolinite. Si is mainly deposited in clay minerals and quartz. The main carrier of Ca in coal is calcite. Fe exists mainly as pyrite in coal. Li is enriched, and Ga, Sr, Zr, Nb, Hf, and Ta are slightly enriched. Li and Ga mainly occur in kaolinite. Nb and Ta occur in clay minerals, some of which may in illite. Zirconium and hafnium also occur in clay minerals, and some in rutile.
- Wujiagou /
- Associated elements /
- Occurrence features /
- Geochemical

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