忻州窑煤中有害元素地化特征及其洁净潜势

基于 41种元素的测试分析 ,探讨了大同忻州窑矿 9号煤层中 1 9种潜在有害元素的分布特征、赋存机理和环境效应等问题 .结果表明 :有害元素 S,As,Sb,Se,Br,Co,Mo,Pb,Ni,Mn,Be在 9号煤层中明显富集 ,其中 As,Sb,Se,Co,Pb,Ni的含量向煤层顶板方向有增高趋势 ;无机硫 ,As,Sb,Se,Mo,Co的赋存主要与黄铁矿有关 ,绝大部分通过物理洗选可以有效脱除 ;Br主要以有机态存在 ,不易脱除 ;有机硫绝对含量较高 ,存在对环境危害的潜势 ,可考虑在煤的利用过程中脱除硫分 ;9煤中这些有害元素起源于多种地球化学成因的叠加 ,其中准同生成因起着主导性作用

Geochemical Features of Hazardous Elements and Cleaning Potential of Coal from Xinzhouyao Coal Mine

Based on the analysis and test of 41 elements, the occurrence, mechanism and environmental effect of 19 potentially hazardous elements in samples of coal seam 9 form Xinzhouyao Coal Mine were discussed. The results show that the hazardous elements S,As,Sb,Se,Co,Mo,Pb,Ni,Br,Mn and Be are notably enriched in the seam, and As,Sb,Se,Co,Pb and Ni tend to increase toward the seam roof; The occurrence of As,Sb,Se,Mo,Co and inorganic S is mainly related to pyrite, most of which may be removed through physical washing methods; The Br occurs in organic matter and is hard to remove; Organic S has a high content and is potentially hazardous to environment, so is should be removed before use. The potentially hazardous elements in coal seam 9 might be derived from the superposition of the various geochemical origins in which the para cotemporaneous origin might play a leading role.