内蒙古白音华煤田煤中微量元素分布特征

发布时间：2018-06-23 08:33

  本文选题：白音华煤田 + 煤系矿产　； 参考：《煤炭学报》2016年02期

【摘要】：为研究煤中微量元素含量及分布特征,在白音华煤田开展了煤中微量元素测试分析。对白音华煤田4个矿区、3个层位所采集的50多件样品的微量元素进行测试分析,重点研究了各矿区煤炭中煤的显微组分特征、煤中F,Cl,As等有害微量元素分布特征、Sb,Ag,Ge,Be,Co等24种微量元素的富集程度分析,并对煤中锗的赋存状态及成煤环境进行了分析。结果表明:白音华煤田煤中As的含量较高,属超高砷煤;白音华煤田二矿煤中Co,Cr,Ge,Ca,Li,V,La,Ce,Nd,Th,U等微量元素富集明显,其中Ge,Ga含量均发现多处已达工业品味;白音华煤田煤中锗被有机质束缚,锗元素在还原性环境下易于富集;由白音煤田煤中硼的示踪物源及指示沉积环境可推定,成煤环境为淡水—半咸水沉积环境。
[Abstract]:In order to study the content and distribution of trace elements in coal, the trace elements in coal were tested and analyzed in Baiyinhua coalfield. The trace elements of more than 50 samples collected from 3 layers in 4 mining areas of Baiyinhua coalfield were tested and analyzed, and the maceral characteristics of coal in each mining area were studied emphatically. Distribution characteristics of harmful Trace elements in Coal the enrichment degree of 24 trace elements such as SB _ (B) Ag _ (G) GE _ (B) Bei Co and so on are analyzed. The occurrence state of germanium in coal and the coal forming environment are also analyzed. The results show that the content of as in the coal of Baiyinhua coalfield is relatively high and belongs to ultra-high arsenic coal, and that the trace elements such as Co-CrCr-GE-Ca-Li-Li-Li-Li-Li-Li-Li, La-Ce-NdTH-ThU are enriched obviously, among which the content of Geo Ga has reached industrial taste in many places, and the content of germanium in Baiyinhua coalfield is bound by organic matter, and the content of GE in Baiyinhua coalfield is restricted by organic matter. Germanium is easy to be enriched in reductive environment, and the source of boron tracer and the indicative sedimentary environment in Baiyin coal field can be inferred that the coal-forming environment is freshwater brackish water sedimentary environment.
【作者单位】： 中国煤炭地质总局勘查研究总院;
【基金】：中国地质调查“东北赋煤区煤系矿产资源综合调查”资助项目(12120114012101)
【分类号】：P618.11
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本文编号：2056518