Prospecting Institute,China National Administration of Coal Geology,Beijing　 100039,China

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。

In terms of the characteristics of trace element content and its distribution in coal,the analysis of trace ele- ments in coal testing was carried out in Baiyinhua coalfield,China. Trace elements,rare earth elements were collected from 50 samples of four mining areas and three layers in Baiyinhua coalfield. The study focuses on analyzing coal mac- eral characteristics,F,Cl,arsenic in coal and other harmful trace elements distribution,and the enrichment of 24 kinds of trace elements including Sb,Ag,Ge,Be,CO in the coal mining areas. Also,the existing state of germanium in coal and coal formation environment was analyzed. The results show a high content of As in Baiyinhua coalfield,belonging to super high arsenic coal. Trace elements such as Co,Cr,Ge,Ca,Li,V,La,Ce,Nd,Th and U,etc. are obvious in No. 2 coal mine of Baiyinhua coalfield. Ga and Ge contents were found to reach industrial grades in many locations;Ger- manium was bound to organic matter in Baiyinhua coal;Germanium element was easy to be enriched in reducing envi- ronment. From the boron’s source trace in the coal of Baiyinhua coalfield and the indication of sedimentary environ- ment,the coal formation environment was a fresh water and brackish water environment.

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)；

Zhang Jianqiang, Zhang Hengli, Du Jinlong, et al. Distribution characteristics of trace elements in coal at Inner Mongolia Baiyinhua coalfield[J]. Journal of China Coal Society,2016,41(2):310-315.