Journal of Central South University

, Volume 18, Issue 2, pp 374–380 | Cite as

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

  • Yue-min Zhao (赵跃民)Email author
  • Gong-min Li (李功民)
  • Zhen-fu Luo (骆振福)
  • Chun-cheng Liang (梁春成)
  • Li-gang Tang (唐利刚)Email author
  • Zeng-qiang Chen (陈增强)
  • Hong-bo Xing (邢洪波)


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 mm) 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/cm3 or 1.61 g/cm3, 50–6 mm coal can be separated effectively with probable error, E, values of 0.05 g/cm3 and 0.06 g/cm3, respectively. This technique is beneficial for saving water resources and for the clean utilization of coal.

Key words

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


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Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Yue-min Zhao (赵跃民)
    • 1
    Email author
  • Gong-min Li (李功民)
    • 2
  • Zhen-fu Luo (骆振福)
    • 1
  • Chun-cheng Liang (梁春成)
    • 1
  • Li-gang Tang (唐利刚)
    • 3
    Email author
  • Zeng-qiang Chen (陈增强)
    • 1
  • Hong-bo Xing (邢洪波)
    • 1
  1. 1.School of Chemical Engineering and TechnologyChina University of Mining and TechnologyXuzhouChina
  2. 2.Tangshan Shenzhou Manufacturing Co., Ltd.TangshanChina
  3. 3.State Key Laboratory of Multiphase Complex Systems, Institute of Process EngineeringChinese Academy of SciencesBeijingChina

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