【摘要】：運用電感耦合等離子體質(zhì)譜和煤質(zhì)分析等技術(shù)方法,對內(nèi)蒙古勝利煤田0-1號鉆孔揭露的早白堊世1、2和4號煤層(共20個煤分層,1個夾矸)進行了研究。結(jié)果顯示,1、2號煤層的揮發(fā)分產(chǎn)率大于44%,透光率小于50%,煤類為褐煤;4號煤層揮發(fā)分產(chǎn)率42%,透光率53%,煤類為次煙煤(長焰煤);1、2號煤層灰分和硫含量較高,4號煤層灰分和硫含量較低。與世界煤微量元素含量平均值相比,1、2和4號煤層中Sb富集,V、Zr、Nb、Hf、W等元素輕微富集,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號煤層中稀土元素和釔(REY)含量較低,根據(jù)上地殼標(biāo)準(zhǔn)值(La/Lu)N比值,所有煤分層均顯示重稀土富集類型特征,而煤中泥巖夾矸則顯示輕稀土富集類型特征。
[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.
【作者單位】： 江蘇地質(zhì)礦產(chǎn)設(shè)計研究院;
【分類號】：P618.11

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