1Study on the technical route and key factors of automatic coal maceral determinationWANG Yue, DING Hua, WU Lin-lin, BAI Xiang-fei1-4,152Analysis method and evaluation of coal tar and distillate oilLI Jun-fang, GU Xiao-hui, DU Shu-feng5-103The development of air suspension cutting powder preparation machine in coal sample preparationZHOU Lei, GUO Xiao-ming, FU Jie-qin, YOU Wei11-154Research on determination of sulfur and chlorine in coal by oxygen bomb combustion-ion chromatographyYE Jia-yu, TIAN Fa-liang, JIANG Tao, HU Shou-peng, WANG Luo-gao16-18,255Analysis and improvement of determination method of fluorine in coalZHAO Yan19-216Evaluation of uncertainty in measurement of chlorine in coalSU Long, DENG Yue-ming, MO Xiao-shan, HU Biao, YANG Yan22-257Application of sampling and sample preparation system of smart robot in Xinglongzhuang coal mineXIE Chang-gang, LIU Zhen, ZHANG Hua, XIE Wei26-298Discussion on internal quality control method of coal testing laboratoryXU Dan-dan30-339Calculation mathematical model analysis of calorific value of Huainan coal based on SPSSHE Jiang-nan34-3610Application of partial least squares method based on spectral line screening in LIBS-based rapid detection of coal ashLI Chun-yan, CHI Fang, LIU Cui-ru37-3911System establishment and effect discussion of fuel intelligent managementYANG Xin-rong40-4212Evaluation of uncertainty in test results of lump carbon undersize fractionSI Jian-guo43-44,5113Discussion on influencing factors of accuracy of sulfur content determination in cokeCAO Xiao-wen45-4714Study on the content and occurrence of harmful trace elements in coal in Kailuan mining areaZHANG Jing48-5115Application of coal petrography analysis on coking coal quality evaluationREN Xue-yan, ZHANG Dai-lin52-5316Sulfur content distribution characteristics of Xinjiang Zhundong coalfieldZHOU Jian, ZHANG Xi54-5717Application of sectional clause analysis of CNAS-CL01 :2018"Accreditation criteria for the competence of testing and calibration laboratories" in coal testing laboratoryWANG Lin-li58-60,6418Analysis on the technology of combustion optimization for industrial coal-fired boilerYANG Jin-fang61-6419Application of dry coal preparation in coal desulfurization technologyGE Xian-yu65-6820Process system feasibility of NS coal preparation plant in MongoliaDING Guang-yao, ZHANG Xian-xian, DING Xue-gang, TANG Yi-chun, ZHANG Yi-gong, YAO Lei69-72 