【摘要】 在采用ICP-AES对张集7个煤层144个样品微量元素含量测试分析的基础上,探讨了元素在不同煤层中的变化规律及其在煤层对比中的应用。结果表明:张集矿区煤中元素B、Se和As含量偏高;不同煤层中微量元素含量变化较大,但具有一定的规律性,其中在9煤层中元素Ba和Cr含量最低,Mn、Zn、As和Se含量相对较高,可以利用这些元素分布特征来区别和划分相邻煤层。更多还原

【Abstract】 The concentration and distribution of trace elements in 144 coal samples from the Zhangji mining area were studied.Compared with average concentrations of trace elements in coals from China and abroad,the coal from the Zhangji mining area contains higher concentrations of B,Se and As.Vertical variations of trace elements in seven coal seams indicate that the distribution of trace elements in coal seams has some regularity;especially in No.9 coal seam,Ba and Cr values are minimum while Mn,Zn,As and Se values are maximum.On the basis of these distribution characteristics of trace elements,the elements Mn,Zn,Se,Ba and Cr can be used as indicators for division of coal seams in the Zhangji mining area.更多还原