摘要
为研究煤岩显微组分的分布赋存及解离规律，以开滦矿区钱家营矿有代表性浮物为研究对象，对不同破碎程度下的煤样进行筛分、浮沉试验，研究不同粒级、密度级产品中煤岩组分含量。结果表明，随着产品粒级的增加，镜质组含量降低，惰质组含量升高，壳质组无明显变化。〉25 mm 产品镜质组含量最低为59.81%，3～0.5 mm 产品中镜质组含量最高为72.99%；〉25 mm 产品惰质组含量最高为35.05%，3～0.5 mm 产品惰质组含量最低为23.30%。随着解离程度的增加，产品镜质组含量逐渐升高。与破碎至〈50 mm 产品镜质组相比，破碎至〈3 mm 时，镜质组含量由72.99%增至78.01%，镜质组回收率变化不大；破碎至〈0.5 mm 时，镜质组含量增至74.95%，产品产率由28.36%增至55.19%，镜质组回收率由31.42%增至62.35%。〈1.30 g / cm3密度级产品镜质组含量变化不大，为86.02%～95.75%，镜质组回收率由〈50 mm 的8.05%增至34.68%～38.39%。
To investigate the distribution occurrence and dissociation law of organic anthracology maceral,taking a kind of representative floats from Qianjiaying coal mine as research object,the screen analysis and float-and-sink analysis were conducted on the coal samples which had different degree of crushing. The anthracology contents in coal samples were investigated. The results showed that,with the increase of products size,vitrinite content decreased,inertinite content rose,exinite content had no obvious change. The lowest vitrinite content and the highest inertinite content in ＋25 mm products were 59. 81% and 35. 05%,while the highest vitrinite content and the lowest inertinite content in 3 mm to 0. 5 mm product were 72. 99% and 23. 30% . With the increase of dissociation degree,vitrinite content increased gradually. Com-pared with the vitrinite content in -50 mm products,the vitrinite content in -3 mm products increased from 72. 99% to 78. 01% . The recov-ery of vitrinite had little change. The vitrinite content in -0. 5 mm products was 74. 95%,the products yield increased from 28. 36% to 55. 19% ,the recovery of vitrinite increased from 31. 42% to 62. 35% . The vitrinite content in -1. 30 g/ cm3 products raged from 86. 02% to 95. 75% ,the recovery of vitrinite in -50 mm increased from 8. 05% to the range of 34. 68% to 38. 39% .
出处
《洁净煤技术》
CAS
2015年第3期21-24,共4页
Clean Coal Technology
关键词
煤岩显微组分
解离
分布规律
浮沉试验
anthracology maceral
dissociation
distribution law
float-and-sink analysis
