1The study on the relationship between the coal petrographic characteristics of Zhundong coal field and the coal quality or the process performanceZHANG Yu-hong, BAI Xiang-fei, DING Hua, WANG Yue1-62Distribution and occurrence of sodium in high oil coal in XinjiangZHU Chuan, ZHANG Jing, WANG Yue7-103Study on the present situation of medium/low temperature coal tar processing and utilizationZHAO Pu, PEI Xian-feng, WANG Zhi-zheng11-164The current situation of BGL pulverized coal slag gasification technologyGUO Liang-yuan17-20,235Period verification method of certified reference material of coalYANG Hua-yu, PI Zhong-yuan21-236Discussion on intelligent management for checking coal sampleHOU Xiao-ming, XU Yong24-257Application design of pneumatic conveying of unattended full-automatic combined sampling machineGAO Bo, MIN Xiong, WANG Ping26-288Existing problems and improving measures for the quality control of coal testing laboratoryLIU Huan-kun, ZHANG Bo, LU Jing-ping29-339Practice of quality management of coal quality testing in MEIKE (Cangzhou)WU Zeng-li34-3510Experimental research on determination of CHN elements in coalJI Xue-ni36-3811Analysis of influencing factors of high temperature combustion hydrolysis process in the determination of fluorine in coalLIU Zhen-de39-41,4912Calorimeter stability test and effect of ignition heat fixed value calibration on calorific valueGONG Fu42-46,7013Experimental study on measurement of sulfur content by infrared absorption methodWANG Ying-jie, LI Ying47-4914Improvement of ignition mode of constant temperature automatic calorimeterSHI Zhen-zhong, CHEN Bing50-5215Discussion on the desiccation check method for the moisture determination of cokeCHEN Qu, ZHOU Fu-qiang53-5516Prediction of Production Indexes of clean coal slime curved screen with pneumatic beaterQI Jing-yuan, WANG Xing-xing, ZHANG Shou-ming, WANG Dan, ZHANG Kun-long56-6017Clean energy development status discussion based on coal washing and by-product utilizationYANG Han-hong61-6318Analysis of coal quality control in Sun Zhuang Matou Coal Preparation PlantWANG Yan-li64-6619Enhancing the control of washing process of raw coal to ensure the clean coal qualityMA Hui-min67-70 