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CFD-DEM investigation of particle separations using a sinusoidal jigging profile

Viduka, Stephen, Feng, Yuqing, Hapgood, Karen and Schwarz, Phil 2013, CFD-DEM investigation of particle separations using a sinusoidal jigging profile, Advanced powder technology, vol. 24, no. 2, pp. 473-481, doi: 10.1016/j.apt.2012.11.012.

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Title CFD-DEM investigation of particle separations using a sinusoidal jigging profile
Author(s) Viduka, Stephen
Feng, Yuqing
Hapgood, Karen
Schwarz, Phil
Journal name Advanced powder technology
Volume number 24
Issue number 2
Start page 473
End page 481
Total pages 9
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2013-03
ISSN 0921-8831
1568-5527
Keyword(s) descrete element method
computational fluid dynamics
liquid-solid flow
jigging
startification
gravity concentration
Summary This paper presents a numerical investigation of solid separation in jigging device. Jigging is a gravity separation method commonly used by the minerals industry to separate coal, iron ore, diamonds and other minerals on the basis of particle size and/or density. Separation is recognised as being heavily dependent on fluid motion in the jig. This study explores the effects of the inlet time dependent velocity profile in relation to a wide criterion 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 range of jigging profiles have been implemented in mineral processing. In this study the sinusoidal pulsation profile is selected adopting variations in both amplitude and frequency. The performance of profile variants are 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. In addition, boundaries of operation are found in terms of frequency and amplitude limits and the concentration mechanics are investigated in these regions.
Notes This article states that it is jointly published by Elsevier and The Society of Powder technology Japan
Language eng
DOI 10.1016/j.apt.2012.11.012
Field of Research 0904 Chemical Engineering
0913 Mechanical Engineering
Socio Economic Objective 0 Not Applicable
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2013, The Society of Powder Technology Japan
Persistent URL http://hdl.handle.net/10536/DRO/DU:30092942

Document type: Journal Article
Collection: School of Engineering
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