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Simulation of mixing process for size-type binary wet particulate systems in a rotating horizontal drum by discrete element method

Gao Hong-Li Chen You-Chuan Zhao Yong-Zhi Zheng Jin-Yang

Simulation of mixing process for size-type binary wet particulate systems in a rotating horizontal drum by discrete element method

Gao Hong-Li, Chen You-Chuan, Zhao Yong-Zhi, Zheng Jin-Yang
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  • Received Date:  05 January 2011
  • Accepted Date:  08 August 2011
  • Published Online:  15 December 2011

Simulation of mixing process for size-type binary wet particulate systems in a rotating horizontal drum by discrete element method

  • 1. Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China;
  • 2. College of Mechanical and Electrical Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China

Abstract: Using the four-equation of linear spring-dashpot discrete element method and considering effect of the liquid bridge, the mixing and segregation process of size-type binary wet particulate system in a rotating horizontal drum is simulated. The effect of interstitial liquid on the mixing and segregation process is discussed. To assess the accuracy of the simulation result, some comparisons are made with the experimental date in the literature. The simulation results show that the liquid bridge between particles plays an important role in mixing and segregation process, and that the cohesion force induced by liquid-bridge leads to the formation of agglomerates of particles. As a result, segregation may be mitigated and mixing may be enhanced, and the network distribution of the contact forces is more uniform in wet particulate system.

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