煤岩显微组分的分离与富集研究

Research on separation and enrichment of macerals of coal

介绍了实验室进行煤岩显微组分分离与富集的常用方法及其原理,并对各方法的分离与富集效果进行了试验研究。试验结果表明:手选法和浮沉法可得到纯度达75%以上的显微组分富集物,离心法可得到90%以上纯度的显微组分富集物。实验室推荐采用的分离与富集方法是手选和浮沉相结合的方法,可使显微组分富集物的纯度达到85%以上。

The common methods and principles of separation and enrichment of macerals in coal labs were introduced in this paper. The experiments were carried out to study the effects of separation and enrichment of macerals by different methods. The test results showed： the enriched maceral with more than 75% concentration could be obtained by hand-separation method and floatation-sinking method; the enriched maceral with more than 90% concentration could be obtained by centrifugation method. The method of combining hand-separation and centrifugation was suggested for the separation and enrichment of macerals in coal labs, by which the enriched maceral with more than 85% concentration could be obtained.