煤矿安全2018，Vol.49Issue(1)：1-4,8,5.DOI:10.13347/j.cnki.mkaq.2018.01.001
煤中不同显微组分孔隙结构特征研究
Study on Pore Sturcture Characteristics of Different Macerals in Coal
摘要
Abstract
In order to study the pore structure characteristics of different macerals in low-rank coal,a floatation experiment was conducted to separate different macerals from raw coal samples which were selected from No.42 coal seam of Xinjiang Fukang Coal Mine and No.8+9 coal seam of Xiegou Coal Mine in the east area of Hubei Province,then the specific surface,pore volume,pore size and other parameters for two kinds of raw coal and different macerals were tested by low termperature liguid nitrogen adsorption experiment,and their adsorption and desorption loops were analyzed.The pore size distribution and pore type characteristics of different macerals were obtained by isothermal adsorption line and desorption loop analysis.The results show that:the coal and chitin group accords with the Ⅱ type adsorption isotherm,the vitrinite and the inertinite are in accord with the Ⅲ type isotherm;the chitin has larger small pores content and pore volume and specific surface area than that of the vitrinite and the inertinite.In the chitin group,the open pores have a larger percent in the pores in which the diameters are greater than 5.4 nm,and the vitrinite group and inertinite group contain only a very small percent of open air holes.The specific surface area and pore volume fractal dimension of chitin group were the smallest,and the vitrinite group was the largest.关键词
显微组分/低温液氮/孔隙结构/孔隙类型/比表面积Key words
maceral/low temperature liquid nitrogen/pore structure/pore type/specific surface area分类
矿业与冶金引用本文复制引用
赵永超,倪小明,李全中..煤中不同显微组分孔隙结构特征研究[J].煤矿安全,2018,49(1):1-4,8,5.基金项目
河南省高校科技创新人才支持计划资助项目(15HASTIT050) （15HASTIT050）
河南省高校科技创新团队支持计划资助项目(14IRTSTHN002) （14IRTSTHN002）
