本文選題：常量元素 + 微量元素��； 參考：《煤炭科學(xué)技術(shù)》2017年12期

【摘要】：為查明黔西松河礦區(qū)煤中元素的富集程度及富集成因,以松河礦區(qū)龍?zhí)督M上、中、下煤組9層主采煤層為研究對(duì)象,利用煤炭勘查報(bào)告中煤質(zhì)化學(xué)成分及煤中Cu、Co、Ni、Sr、Be、Ba、V等7種微量元素質(zhì)量分?jǐn)?shù)等參數(shù),對(duì)主要煤層的元素地球化學(xué)特征進(jìn)行了研究,并依常量元素和微量元素的含量及比值探討了龍?zhí)督M不同含煤層段成煤環(huán)境差異。結(jié)果表明:該區(qū)煤層常量元素氧化物以SiO2、Al_2O_3和Fe_2O_3為主,CaO次之,各常量元素豐度總體與中國(guó)煤均值相似;煤中微量元素Cu、Co、Ni、Sr、Be、Ba和V的質(zhì)量分?jǐn)?shù),不但高于黔西煤均值,而且顯著高于中國(guó)煤均值和世界煤均值,其中V尤為富集。灰成分指數(shù)(Fe_2O_3+CaO+MgO)/(SiO2+Al_2O_3)、Sr/Ba、Ni/Co及S的質(zhì)量分?jǐn)?shù)在龍?zhí)督M上、中、下煤組煤層中呈現(xiàn)高-低-高的變化規(guī)律,反映龍?zhí)督M上、下煤組煤層成煤時(shí)受海水影響較大,而中煤組煤層成煤時(shí)受海水影響較小。
[Abstract]:In order to find out the enrichment degree and origin of elements in the coal of Songhe mining area in western Guizhou, the 9 layers main coal seam of Longtan formation, middle coal group and lower coal formation in Songhe mining area were taken as the research object.Based on the chemical composition of coal in the coal exploration report and the mass fraction of seven trace elements, such as Cu-Co-Ni-Ni-Li, SrBeBe-Ba-V, etc., the geochemical characteristics of elements in main coal seams are studied.According to the contents and ratios of constant elements and trace elements, the difference of coal forming environment in different seam bearing sections of Longtan formation is discussed.The results show that the major element oxides in coal seams in this area are SiO2Al2O3 and Fe_2O_3, and the abundance of each major element is similar to the average value of coal in China, and the mass fraction of the trace element CuO2Al2O3 and Fe_2O_3 is not only higher than the average value of coal in western Guizhou.Moreover, it is significantly higher than the average value of coal in China and in the world, among which V is especially enriched.The ash composition index, Fe2O3 CaO MgO)/(SiO2 Al2O3, the mass fraction of Sr- / Ba-Ni / Co and S in the Longtan formation, the coal seam of middle and lower coal groups shows a high, low and high variation rule, which indicates that the coal seam of the lower coal group is greatly influenced by seawater when it is formed in the Longtan formation.The medium coal seam is less affected by sea water during coal formation.
【作者單位】： 貴州省煤層氣頁(yè)巖氣工程技術(shù)研究中心;貴州省煤田地質(zhì)局;中國(guó)石化石油工程技術(shù)研究院;煤炭科學(xué)研究總院;
【基金】：國(guó)家科技重大專項(xiàng)資助項(xiàng)目(2016ZX05034004—007,2016ZX05044001-005)
【分類號(hào)】：P618.11

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