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Simulation of Grinding Media Motion and Collisions in Wet-Operated Accelerator-Mill Using DEM Coupled with CFD

Kang He, Minping Jia

2022Englishmineral processingbeneficiationcomminutionflotationphysical separationwet grinding

Abstract

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The relative motion and collision between grinding media in a wet-stirred accelerator mill are modelled using the discrete element method (DEM) coupled with computational fluid dynamics (CFD). The local average normalized grinding media velocity profile is employed to divide the grinding chamber into four volumes, which facilitates the analysis of the stress energy distribution. The local grinding media filling levels, velocity distributions, stress energy distributions and energy efficiencies are compared at various total grinding media filling levels and stirrer speeds. The rationality of the division of stress energy volume was verified by the stress energy distribution. The stress intensity, stress number and collision stress energy from the grinding media’s motion and particle collisions exhibited different distributions, with the stress.

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Cite This Work

@article{fcb6f8f3-a7cb-46b5-9278-fc2747edda36,
  title={Simulation of Grinding Media Motion and Collisions in Wet-Operated Accelerator-Mill Using DEM Coupled with CFD},
  author={Kang He and Minping Jia},
  year={2022},
  language={English}
}
TY  - JOUR
TI  - Simulation of Grinding Media Motion and Collisions in Wet-Operated Accelerator-Mill Using DEM Coupled with CFD
AU  - Kang He
AU  - Minping Jia
PY  - 2022
LA  - English
ER  -

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