煤炭工程 ›› 2016, Vol. 48 ›› Issue (11): 111-114.doi: 10.11799/ce201611032

• 研究探讨 • 上一篇    下一篇

梅山矿区不同煤层中微量元素的分布及赋存特征

胡小娟,黄懿,涂玮,邹勇军,米振华   

  1. 江西省煤田地质勘察研究院
  • 收稿日期:2016-03-06 修回日期:2016-04-06 出版日期:2016-11-10 发布日期:2016-12-16
  • 通讯作者: 胡小娟 E-mail:xjhu804@163.com

Distribution and Deposition characteristics of trace elements in coal of Meishan coal mine area

  • Received:2016-03-06 Revised:2016-04-06 Online:2016-11-10 Published:2016-12-16

摘要: 基于样品的分析测试数据,研究了新余市梅山矿区煤中微量元素的含量分布特征和在不同煤层中垂向上的分布变化规律,并初步探讨了煤中微量元素的赋存状态。研究结果表明,煤中微量元素的平均含量与中国煤中微量元素均值相比,Ga、U、F、P、As等元素均值高于中国煤中微量元素的平均含量,而Ge、Cl元素的平均含量低于中国煤中该元素的平均含量|与地壳的平均含量相比,Ge、U、As等元素明显偏高,在煤中的富集系数EF>1,且U元素有明显富集(富集系数为19.38)|同一煤系中,下部煤层的微量元素含量相对高于上部煤层中的含量|微量元素Ge、U、Cl、P既以有机态赋存于煤中,又以无机态赋存与煤中,Ga、F、As主要以无机态赋存于煤中,且Ga、F元素主要赋存于粘土矿物中,As主要赋存于粘土矿物和黄铁矿中。

关键词: 煤, 微量元素, 含量, 分布规律, 赋存状态, 梅山矿区

Abstract: Based on the analysis of sample tests, this paper studied the distribution characteristics of trace elements in coal of Xinyu Meishan coal mine area, and the change rule of vertical distribution in different coal seam. Preliminary discussed occurrences of trace elements enrichment in coal. Research shows that firstly, Ga, U, F, P, As , etc. trace elements have higher content compared with average data of China, while the content of Ge, Cl element are below the average contents of China. Ge, U & As are obviously richer than the average content of the earth's crust, the enrichment coefficient(EF) of these elements exceed 1,U element especially rich (Ef=19.38). The trace elements content of lower coal seam are relatively higher than that of the upper coal seam in the same coal. Trace elements of Ge,U,Cl and P are mainly associated with inorganic matter in coals, Ga,FandAs are mainly associated with organic matter in coals, Ga and F mainly adistribute in clay minerals, As is mainly in pyrite.

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