1Study on numerical simulation of the pressure-fed 3-stage heavy-medium cyclone for rewashing of middlingsWANG Xiang-zhen, SHEN Ke-zhong, ZHAO Long, CAO HuiTest and Research1-52A study of the effect on flotation performance produced by diesel oil emulsificationLI Zhi-bin, YANG Kang, LI Xiao-le, ZHAO JieTest and Research6-93Numerical simulation of the double-cone heavy-medium cyclone capable of effecting high-density separationLI Sen, CHENG Hong-zhi, SUN Hua-fengTest and Research10-12,174Quantitative study of the effect of density of circulating water on flotation DerformanceREN Li-qin, LIANG Liao, GAO Mei, WANG Wei-wei, WU Da-weiTest and Research13-175Study of effect on performance of flotation of Taixi anthracite coal exerted by change of reagents and particle surface modificationZHANG QianTest and Research18-216R&D and application of the air-cooled tramp-iron separatorWANG Cheng-sheng, ZENG Zheng-lin, LU Juan, GAO Peng-junTest and Research22-247A study on the effect of viscosity of medium suspension on drop-down of lower size limit of separation of cycloneWANG Rui, QI Zheng-yi, SONG Jun-chao, CHEN Jia-jun, HUANG Ya-fei, LIU Yang-ziTest and Research25-288Practical applicability of the mechanism for making rigid adjustment of the center-to-center spacing of rolls of the SSC series double-toothed roll crusherSONG LiangTechnology and Experiences29-319Application of the hot patching technique in maintenance of conveyor beltGAO Dong-suo, WANG Bao-lin, LI Wei-wei, LUO Jin-liang, REN Zi-chengTechnology and Experiences32-3510Practice of technical transformation of coal silo for prevention of blockage at Tianhong Coal Preparation PlantWANG JieTechnology and Experiences36-38,4211Application and practice of clean coal cleaning technology at Handan Coal Preparation PlantWANG Jun-xia, LI Hong-junTechnology and Experiences39-4212Practice of operation of pneumatic and subaeration flotation machines in tandem at Zhaolou Coal WasheryDAI Chang-guan, LIU MinTechnology and Experiences43-4513Application of HK reagent at Donglin company for flotation of anthracite coal featuring an ultrahigh feed pulp densityZHANG Jian-zhong, ZHANG Zun-xian, CHEN ZanTechnology and Experiences46-4814Transformation of teetered-bed coarse slime separation system for attaining optimum performanceLIU Guo-chaoTechnology and Experiences49-5115Optimization of the coal slime cleaning process at Binhu Coal Preparation PlantZHAO Shuai, JI Yu-hua, CHEN Chuan-hai, SUN Ming-hua, FENG HuiTechnology and Experiences52-5516Study on reduction of lower size limit of feed material for separation by shallow-bath separating vesselHUANG Ya-feiissue discussion56-5817Renovation of middlings magnetic separator tailings recovery processJIANG Xiao-longissue discussion59-6118Design of circulating medium density control system based on BP neural networkLIANG Bin-chang, ZHAO Jian-zhang, TIAN Shu-dan, YANG Shuang-zhouAutomation of Coal Preparation62-6619Application of NGAM-2008 natural-ray passive ash monitor for on-line measurement of ash of clean coalGE Xue-hai, BAI Yun-fei, CHEN Peng, ZHANG Li-gong, ZHANG Guang-chaoAutomation of Coal Preparation67-69,7820A preliminary study on hierarchical management of equipment at Tianzhuang Coal Preparation PlantKONG Zhong-weiProduction and Management70-74 