Modularized dry coal beneficiation technique based on gas-solid fluidized bed

作     者：赵跃民 李功民 骆振福 梁春成 唐利刚 陈增强 邢洪波 

作者机构：School of Chemical Engineering and TechnologyChina University of Mining and Technology Tangshan Shenzhou Manufacturing Co.Ltd. State Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of Sciences 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2011年第18卷第2期

页      面：374-380页

核心收录：

学科分类：081902[工学-矿物加工工程] 0819[工学-矿业工程] 08[工学] 

基　　金：Projects(50921002, 50774084) supported by the National Natural Science Foundation of China Project(2007AA05Z318) supported by the National High-tech Research and Development Program of China Project(BK2010002) supported by the Natural Science Foundation of Jiangsu Province of China Project(20100480473) supported by the China Postdoctoral Science Foundation 

主　　题：dry coal beneficiation modularization gas-solid fluidized bed wide-size-range medium-solids 

摘      要：A 40-60 t/h modularized dry coal beneficiation process with a novel method to control the bed was designed around a gas-solid fluidized bed separator. Furthermore, the hydrodynamics of medium-solids consisting of wide-size-range magnetite powder （0.3-0.06 ram） and 〈1 mm fine coal were numerically studied. The simulation results show that the fluidization performance of the wide-size-range medium-solid bed is good. The separation performance of the modularized system was then investigated in detail using a mixture of 〈0.3 mm magnetite powder （mass fraction of 0.3-0.06 mm particles is 91.38 %） and 〈1 mm fine coal as solid media. The experimental results show that at separation densities of 1.33 g/cm^3 or 1.61 g/cm^3, 50-6 mm coal can be separated effectively with probable error, E, values of 0.05 g/cm^3 and 0.06 g/cm^3, respectively. This technique is beneficial for saving water resources and for the clean utilization of coal.