Caking property and active components of coal based on group component separation  

作　　者：Qin Zhihong Li Xiang Sun Hui Zhao Cuicui Rong Liman 

机构地区：[1]Key Laboratory of Coal Processing and Efficient Utilization,School of Chemical Engineering and Technology,China University of Mining and Technology

出　　处：《International Journal of Mining Science and Technology》2016年第4期571-575,共5页矿业科学技术学报（英文版）

基　　金：the National Basic Research Program of China (No.2012CB214900);the National Natural Science Foundation of China (No.51274201);the Coal Joint Fund from National Natural Science Foundation of China and Shenhua Group Corporation Limited (No.U1361116);the Priority Academic Program Development of Jiangsu Province Higher Education Institutions

摘　　要：The content and the caking index of the heavy,the dense medium and the loose medium components of coal,obtained by extraction and stripping with CS_2/N-methyl-2-pyrrolidinone mixed solvent(1:1 by volume),were studied and correlated with the caking property of raw coals.Images of the three group components after heat treatment were analyzed.The results show that both caking index(G) and maximum thickness of plastic layer(Y) of coals have a good linear relationship with the content of the medium component;the dense medium and the loose medium components are the two key factors to determine the caking property of raw coals-they are the source materials of fluidity and swelling of coal,respectively;the heavy component without the swelling and fluidity was cohered by the other components;two new indexes,which can extend current understanding of the caking properties,were introduced.The content and the caking index of the heavy, the dense medium and the loose medium components of coal, obtained by extraction and stripping with CS2[N-methyl-2-pyrrolidinone mixed solvent （1：1 by volume）, were studied and correlated with the caking property of raw coals. Images of the three group com- ponents after heat treatment were analyzed. The results show that both caking index （G） and maximum thickness of plastic layer （Y） of coals have a good linear relationship with the content of the medium component; the dense medium and the loose medium components are the two key factors to determine the caking property of raw coals-they are the source materials of fluidity and swelling of coal, respectively; the heavy component without the swelling and fluidity was cohered by the other components; two new indexes, which can extend current understanding of the caking properties, were introduced.

关 键 词：Swelling Fluidity Group components Caking propertyActive components 

分 类 号：TQ533.3[化学工程—煤化学工程] TE624.91[石油与天然气工程—油气加工工程]