贵州盘县矿区煤中伴生元素的地球化学特征

发布时间：2018-05-26 15:10

本文选题：贵州西部 + 晚二叠世煤　；参考：《煤炭科学技术》2017年10期

【摘要】：为了探究贵州盘县矿区松河煤矿煤中伴生元素的富集程度、赋存状态和富集成因,以松河煤矿一采区、二采区和三采区9个煤样为研究对象,使用X射线荧光光谱仪(XRF)和电感耦合等离子体质谱仪(ICP-MS)对煤中常量元素和微量元素进行测定,结合显微镜、X射线衍射仪(XRD)以及相关理论分析及逐级化学提取试验(SCEE)分析元素的赋存状态。研究结果表明,所采煤层煤中常量元素Si、Al、Ca、Mg、Mn含量相对其他地区煤而言,含量均值正常,其余常量元素含量亏损;煤中微量元素As、Co含量相对煤而言明显富集;煤中As主要赋存在硅铝酸盐矿物、有机质和硫化物中,Co主要赋存在硅铝酸盐态和硫化物中,该地区峨眉地幔热柱及峨眉山玄武岩岩浆的热液作用导致煤中As和Co元素异常富集。
[Abstract]:In order to investigate the enrichment degree of associated elements in Songhe coal mine in Panxian mining area of Guizhou Province, the occurrence state and the cause of enrichment, 9 coal samples from the first, second and third mining areas of Songhe Coal Mine were studied. X ray fluorescence spectrometer (XRF) and inductively coupled plasma mass spectrometer (ICP-MS) were used to determine the major elements and trace elements in coal. Combined with microscope X-ray diffractometer (XRD) and related theoretical analysis and stepwise chemical extraction test (SCEE) to analyze the state of occurrence of elements. The results show that the average content of the main element in the coal seam is normal, the content of other major elements is deficient, and the content of trace element As-Co in the coal is obviously enriched compared with the coal in other areas. Coal as mainly occurs in silicate minerals, organic matter and sulfides mainly occur in aluminate and sulfides. Hydrothermal processes of Emei mantle plume and Emeishan basalt magma lead to abnormal enrichment of as and Co elements in coal.
【作者单位】：河北工程大学河北省资源勘测研究重点试验室;
【基金】：国家自然科学基金资助项目(41472133) 河北省杰出青年科学基金资助项目(D2014402046) 河北省高校百名优秀创新人才支持计划资助项目(BR2-204)
【分类号】：P618.11

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