CFD-DEM simulations of a sawtooth jigging profile on particle mixtures

S. M. Viduka, Y. Q. Feng, K. Hapgood, P. Schwarz

Research output: Contribution to conferenceAbstractpeer-review

Abstract

This paper presents a numerical investigation of solid separation in jigging device, which is a gravity separation method widely used in ore processing. Separation is recognized as being heavily dependent on fluid motion in the jig. This study explores the effects of the inlet time dependent velocity profile on jigging performance. Modelling of the liquid-solid system is performed through a combination of computational fluid dynamics (CFD) to simulate liquid flow and discrete element method (DEM) to resolve particle motion. The initial packing conditions consist of a binary-density particle system of 1130 particles each 1 cm in diameter. A variety of jigging profiles are implemented in jigging. The saw tooth pulsation profile is selected with three variations in both amplitude and frequency. The performance of each profile variant is compared in terms of solid flow patterns, separation kinetics, energy, and mean particle position. These quantitative comparisons demonstrate significant differences in the segregation rate, energy, and solid phenomena, helping find an alternative optimum operating setting for the system.

Original languageEnglish
Pages519
Number of pages1
Publication statusPublished - 2012
EventInternational Mineral Processing Congress 2012: Innovative Processing for Sustainable Growth - New Delhi, India
Duration: 24 Sep 201228 Sep 2012
Conference number: 26th
http://www.impc-council.com/IMPC_2012_Proceedings_INDIA.pdf

Conference

ConferenceInternational Mineral Processing Congress 2012
Abbreviated titleIMPC 2012
Country/TerritoryIndia
CityNew Delhi
Period24/09/1228/09/12
Internet address

Keywords

  • Computational fluid dynamics
  • Discrete element method
  • Gravity concentration
  • Jigging
  • Liquid-solid flow
  • Stratification

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