平顶山山西组煤显微组分分离富集研究

Research on separation and enrichment of macerals in Shanxi Formation coal of Pingdingshan

为了研究平顶山山西组煤显微组分的分离与富集,通过破碎筛选法确定显微组分解离度,通过直接浮沉法、物理脱灰后浮沉法、化学脱灰后浮沉法对它的有机显微组分进行分离富集。研究结果表明,简单的直接浮沉法分离富集效果不理想,而通过脱灰后浮沉法均可获得高纯度(>90%)的壳质组,并且对孢粉进行了分离与富集,最终确定平顶山山西组煤中孢粉的最佳密度为1.16~1.20g/cm3,富集产率能够达到90%以上。

To study the separation and enrichment of macerats in Shanxi Formation coal of Pingdingshan, the breaking and screening method was used to determine the dissociation degree of macerals, and the direct float-and-sink method, physical de-ashing float-and-sink method and chemical de-ashing float-and-sink method were used for the separation and enrichment of the organic macerals. The results showed that the separation and enrichment effects of the simple direct float-and-sink method was unsatisfactory, but the de-ashing float-and-sink method could achieve high-purity exinite that the purity was over 90%, and sporopollen was separated and enriched at the same time, finally it determined that the optimum density of sporopollen in Shanxi Formation coal of Pingdingshan was 1.16-1.20 g/cm^3 and the enrichment rate reached 90%.