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《Coal Science and Technology》 2018-05
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Feasibility evaluation on direct liquefaction of No.3-1 coal seam from No.3 Open-pit Mine in Baiyinhua Coalfield

HUO Chao;ZHAO Yue;ZHU Kaicheng;ZHANG Hengli;ZHANG Jianqiang;ZHAO Wenyang;XU Qiang;General Prospecting Institute China National Administration of Coal Geology;  
In order to research the relationship between the direct liquefaction feasibility of lignite in Baiyinhua Coalfield and coal macerals and coal quality parameters,the samples were collected and tested from No. 3-1 coal seam in No.3 Open-pit Mine. In combination with the former researchers' results of coal macerals and coal quality indexes,this paper discussed the effects of inertinite content,ash,volatile content and H/C ratio on direct liquefaction. The results showed that the low inertinite content,low ash content,high volatile content,and high H/C atomic ratio of lignite were favorable for direct liquefaction. The No.3-1 coal seam had a lower content of inertinite,which was less than 8.70%,most of coal ash content of clean coal was less than 10%,volatile matter content was greater than 35%,most H/C atomic ratio was greater than 0.75. Based on the comprehensive analysis,all parameters of No.3-1 coal seam met the requirements of direct liquefaction index and could be used as an ideal direct liquefaction raw material.
【Fund】: 中国地质调查局地质调查工作资助项目(DD20160187)
【CateGory Index】: TD849.2;TQ529.1
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