内蒙古胜利煤田0-1孔煤中微量元素地球化学特征
发布时间：2019-06-26 18:51
【摘要】：运用电感耦合等离子体质谱和煤质分析等技术方法,对内蒙古胜利煤田0-1号钻孔揭露的早白垩世1、2和4号煤层(共20个煤分层,1个夹矸)进行了研究。结果显示,1、2号煤层的挥发分产率大于44%,透光率小于50%,煤类为褐煤;4号煤层挥发分产率42%,透光率53%,煤类为次烟煤(长焰煤);1、2号煤层灰分和硫含量较高,4号煤层灰分和硫含量较低。与世界煤微量元素含量平均值相比,1、2和4号煤层中Sb富集,V、Zr、Nb、Hf、W等元素轻微富集,其它微量元素的含量接近或低于世界煤含量的平均值。1、2和4号煤层中稀土元素和钇(REY)含量较低,根据上地壳标准值(La/Lu)N比值,所有煤分层均显示重稀土富集类型特征,而煤中泥岩夹矸则显示轻稀土富集类型特征。
[Abstract]:By means of inductively coupled plasma mass spectrometry (ICP-MS) and coal quality analysis, the early Cretaceous No. 1, No. 2 and No. 4 coal seams (20 coal stratification and 1 gangue) exposed by No. 1 drilling hole in Shengli Coalfield, Inner Mongolia were studied. The results show that: (1) the volatile matter yield of No. 2 coal seam is more than 44%, the light transmittance is less than 50%, the coal is lignite, the volatile matter yield of No. 4 coal seam is 42%, the light transmittance is 53%, the coal is secondary bituminous coal (long fireworks coal), and the ash and sulfur content of No. 2 coal seam is higher than that of No. 4 coal seam. Compared with the average content of trace elements in the world coal, the contents of rare earth elements and yttrium in No. 2 and No. 4 coal seams are slightly enriched, while the contents of other trace elements are close to or lower than the average content of the world coal. 1 the contents of rare earth elements and yttrium (REY) in No. 2 and No. 4 coal seams are lower than those in the world coal seam. According to the ratio of the upper crustal standard value (La/Lu) N, all coal layers show the characteristics of heavy rare earth enrichment types. The mudstone gangue in coal shows the characteristics of light rare earth enrichment type.
【作者单位】： 江苏地质矿产设计研究院;
【分类号】：P618.11
本文编号：2506402
[Abstract]:By means of inductively coupled plasma mass spectrometry (ICP-MS) and coal quality analysis, the early Cretaceous No. 1, No. 2 and No. 4 coal seams (20 coal stratification and 1 gangue) exposed by No. 1 drilling hole in Shengli Coalfield, Inner Mongolia were studied. The results show that: (1) the volatile matter yield of No. 2 coal seam is more than 44%, the light transmittance is less than 50%, the coal is lignite, the volatile matter yield of No. 4 coal seam is 42%, the light transmittance is 53%, the coal is secondary bituminous coal (long fireworks coal), and the ash and sulfur content of No. 2 coal seam is higher than that of No. 4 coal seam. Compared with the average content of trace elements in the world coal, the contents of rare earth elements and yttrium in No. 2 and No. 4 coal seams are slightly enriched, while the contents of other trace elements are close to or lower than the average content of the world coal. 1 the contents of rare earth elements and yttrium (REY) in No. 2 and No. 4 coal seams are lower than those in the world coal seam. According to the ratio of the upper crustal standard value (La/Lu) N, all coal layers show the characteristics of heavy rare earth enrichment types. The mudstone gangue in coal shows the characteristics of light rare earth enrichment type.
【作者单位】： 江苏地质矿产设计研究院;
【分类号】：P618.11
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