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运用数理统计思想,利用聚类分析和因子分析方法,研究淮北煤田孟庄煤矿煤中10种微量元素的丰度特征、赋存状态及环境效应。结果表明,孟庄煤矿煤中微量元素丰度变化范围较大,但基本处于正常范围。煤中Cr、U、V、As、Th、Ba和Mo属于黏土矿物吸附类;Mn和Cu属于硫化物矿物类;Sb属于有机结合类。Cr在煤灰分中富集程度高,在煤中含量高,可以通过洗选脱除来减小危害;Sb属于易挥发元素,但是在煤中含量低,危害小。
Using mathematical statistics, using cluster analysis and factor analysis, the abundance characteristics, occurrence and environmental effects of 10 trace elements in coal of Mengzhuang coal mine in Huaibei coalfield were studied. The results show that the trace elements in Mengzhuang Coal Mine have a wide range of trace elements abundance, but are basically in the normal range. Cr, U, V, As, Th, Ba and Mo belong to clay mineral adsorption class; Mn and Cu belong to sulfide minerals; Cr has a high degree of enrichment in the coal ash fraction and a high content in the coal, which can be mitigated by washing and removing. Sb is a volatile element but has a low content in coal and little harm.