Physical properties and filter cake structure of fine clean coal from flotation  

作　　者：Zhang Yingjie Gong Guanqun Wu Guoguang Wang Yuelun 

机构地区：[1]School of Chemical Engineering and Technology,China University of Mining & Technology

出　　处：《International Journal of Mining Science and Technology》2014年第2期281-284,共4页矿业科学技术学报（英文版）

基　　金：the National Natural Science Foundation of China (No. 21206190);the Science Fund Project of China University of Mining & Technology (No. 2008A027);the China Coal Industry Association 2012 Annual Scientific and Technological Guidance Project (Nos. MTKJ 2012-288 and MTKJ 2012-289) for their financial support

摘　　要：In order to improve the dewatering rate and the effect of fine clean coal(FCC), the advanced method offine coal( 0.5 mm) dewatering and the correlated basic theory were investigated in this study. It was found that the dewatering by sleeve type press filter was an efficient way of FCC dewatering. On the other hand, the results also proved that particle size distribution, volatile matter, ash content, pore size distribution and specific surface area of coal particles of FCC samples, as well as viscosity and density of FCC slurry, were important parameters in determining the process of efficient dewatering. Especially, wet mass to dry mass, specific resistance of average mass, compressibility factor and microstructure of filter cake explained the reasons and mechanisms of fine clean coal efficient dewatering.In order to improve the dewatering rate and the effect of fine clean coal （FCC）, the advanced method of fine coal （-0.5 mm） dewatering and the correlated basic theory were investigated in this study. It was found that the dewatering by sleeve type press filter was an efficient way of FCC dewatering. On the other hand, the results also proved that particle size distribution, volatile matter, ash content, pore size distri- bution and specific surface area of coal particles of FCC samples, as well as viscosity and density of FCC slurry, were important parameters in determining the process of efficient dewatering. Especially, wet mass to dry mass, specific resistance of average mass, compressibility factor and microstructure of filter cake explained the reasons and mechanisms of fine clean coal efficient dewatering

关 键 词：Fine clean coal Coal slurry Filter cake Dewatering 

分 类 号：TD923[矿业工程—选矿] TD94