Preparation and coking properties of coal maceral concentrates  

作　　者：Zhang Lei Liu Wenli Men Dongpo 

机构地区：[1]School of Chemical and Environmental Engineering,China University of Mining & Technology

出　　处：《International Journal of Mining Science and Technology》2014年第1期93-98,共6页矿业科学技术学报（英文版）

基　　金：financially supported by the Fundamental Research Funds for the Central Universities of China (No.2010YH11)

摘　　要：The concentrates with different maceral contents were obtained from Kailuan coking coals with different coal ranks(Ro;ranvarying from 0.88%to 1.73%)by float–sink separation in lab.Then these concentrates were characterized by proximate analysis,ultimate analysis,petrography analysis and coking index determination.The results show that the vitrinite is characterized as nature of lower carbon content,higher hydrogen content,higher volatile matter and stronger caking property compared to inertinite.The relationships between variation rate of volatile matter and maximum volatile matter and coal ranks are identified,and a linear model is developed for fast determination of the maceral contents.Compared to inertinite-rich concentrate,the blending ratio of vitrinite-rich concentrate is increased by 13%,which is considered to be a potential technique based on maceral separation for expanding the coking coal resources.The concentrates with different maceral contents were obtained from Kailuan coking coals with different coal ranks （Ro,ran varying from 0.88% to 1.73%） by float-sink separation in lab. Then these concentrates were characterized by proximate analysis, ultimate analysis, petrography analysis and coking index determination. The results show that the vitrinite is characterized as nature of lower carbon content, higher hydrogen content, higher volatile matter and stronger caking property compared to inertinite. The relationships between variation rate of volatile matter and maximum volatile matter and coal ranks are identified, and a linear model is developed for fast determination of the maceral contents. Compared to inertinite-rich concentrate, the blending ratio of vitrinite-rich concentrate is increased by 13%, which is considered to be a potential technique based on maceral separation for expanding the coking coal resources.

关 键 词：Vitrinite Inertinite Properties Coking coal Maceral separation 

分 类 号：TQ533[化学工程—煤化学工程] TS255.7[轻工技术与工程—农产品加工及贮藏工程]