新疆中生代煤中半镜质组特征及其研究意义  

Characteristics of semi-vitrinite of the Mesozoic coal in Xinjiang area and their research significance

作　　者：范章群 宋孝忠 

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710054

出　　处：《煤田地质与勘探》2014年第5期9-12,共4页Coal Geology & Exploration

基　　金：国家科技重大专项课题(2011ZX05033-002)

摘　　要：通过分析显微图像的光学性质和测定煤的反射率等方法，研究了新疆中生代煤中半镜质组特征。结果表明：新疆中生代煤中含有一定量的半镜质组；均质半镜质体占总体（均质镜质体与均质半镜质体之和）的49%～64%，均质半镜质体的最大反射率（Rmax）比均质镜质体的高0.08%～0.13%；均质半镜质体的Rmax介于均质镜质体和结构镜质体之间，结构半镜质体的Rmax比结构镜质体的高0.28%～0.34%。由此可以得出：在三大组分划分方案中，应将均质半镜质体归入镜质组的均质体中，同时认为，按显微组分三大组分划分方案中，将结构半镜质体归入惰质组的半丝质体中更合理；在测定煤的反射率时，不能将均质半镜质体作为反射率的测定对象。本项研究结果对于指导本地区煤炭的炼焦配煤、煤炭液化和深加工利用等具有重要意义。Through the analysis of the optical properties of maceral images and determining microscopically the reflectance of the coal macerals, the characteristics of the semi-vitrinite group of Mesozoic coal in Xinjiang are studied. The analysis results show that there exist certain amount of semi-vitrinite group in the Mesozoic coal in the region. The content of semi-telocollinite is 49%～64% of the total amount of telocollinite and semi-telocollinite. The maximum reflectance of semi-telocollinite is 0.08%～0.13% higher than that of the telocollinite. The reflectance of semi-telocollinite is between that of the telocollinite and telinite. The reflectance of the semi-telinite is 0.28%～0.34% higher than that of telinite. From the above-mentioned results, it can be concluded that semi-telocollinite should be classified as vitrinite and it is reasonable that the semi-telinite is classified as semi-fusinite in inertinite. It is important that the semi telocollinite should not be measured as the object while determining microscopically the reflectance of vitrinite in coal. So the study is very useful for coal blending of coking coal, coal liquefaction and further coal processing and utilization.

关 键 词：新疆中生代煤 显微组分 半镜质组 研究意义 

分 类 号：P618.11[天文地球—矿床学]