1Progress of research work on physical and chemical degradation of polyacrylamideZHANG Dongchen, WANG Fanglue, WANG Taooverview1-52State-of-the-art of the standardization of coal preparation operation in China and key tasks in the futureYANG Maoqingoverview6-93Notes on publicity and enforcement of the standard GB/T 35052-2018-Method for measurement of content of magnetic material of medium suspension of H.M.cyclone used in coal preparation plantLIU Tao, GAO Mei, ZHANG Yao, WU Daweioverview10-144Study on recovery of heavily oxidized fine coal slimeZHANG Guangwei, WANG Lijuan, GE Jiajun, CUI Xueqi, SUN Benchao, ZHANG Xing, WANG Zhishuai, MA YunguangExperiment & Research15-185Optimized of the tailings product reconcentration process at the coal preparation plant of Lyulin Energy & Chemical CompanyWANG Qinhao, WANG YueExperiment & Research19-216Experimental study on dewatering of flotation concentrate at Huaning Coal Preparation PlantCHEN Lei, LIU ZhidongExperiment & Research22-257State-of-the-art of the development of coal hydrocycloneYAN Dongqing, WANG Xiao, WANG Jin, WU Di, ZHANG HonganEquipment & Technology26-298Application of the technique for underground destoning and stowing using TDS intelligent dry cleaning machineLIANG XingguoEquipment & Technology30-349Exploration of the issues concerning the heavy medium shallow-bath coal separatorHUANG YafeiEquipment & Technology35-37,4110Characterization design of operating parameters of vibrating screen based on the principle of persistence of visionMA Ting, ZHANG Lin, TAO YongwenEquipment & Technology38-4111Selection of the easy-to-wash non-caking coal washing process for Manlailiang Coal CompanyWANG XinminOperation & Practice42-46,5112Application of the innovative technology for progressively reducing the volume of flotation tailings applied at Bakuang Coal Preparation PlantZENG Qinggang, WU Erdong, LYU Jiawei, LI ZhenchengOperation & Practice47-5113Analysis of the schemes for washing blended 8# and 9# raw coal at Tunlan Coal Preparation PlantGUO RongOperation & Practice52-5614Study on the design of coal washing processes of Haizetan Coal Preparation PlantLIU LijunOperation & Practice57-6015Application of the spiral chute gravity-separation process at Zhouyoufang iron ore Dressing Plant in Anhui ProvinceWANG Peng, ZHAO Libing, CUI Chunli, ZHANG JinruiOperation & Practice61-6416Application of the gravity-fed 3-product heavy medium cyclone at Ronghui Coal Preparation PlantCAO HuiOperation & Practice65-6817Study of the small raw coal separation technology at Fangezhuang Coal Preparation PlantTANG JianmingOperation & Practice69-7318Practice of the work on renovation and capacity expansion of the 10 MPTY-class extralarge coal preparation plantTAN ZhenOperation & Practice74-79,8319Optimization and application of the washing process for treating different kinds of raw coalKONG Chunpeng, HOU Yumao, WANG Zhaojie, AN Ce, GUO TongOperation & Practice80-8320Application of the closed coal stockyard of gas film structure at Lyuliang Coal Preparation PlantXING YufengOperation & Practice84-86,100 