Particle-bubble encounter probability with mobile bubble surfaces

Nguyen, AV (1998) Particle-bubble encounter probability with mobile bubble surfaces. International Journal of Mineral Processing, 55 2: 73-86. doi:10.1016/S0301-7516(98)00025-8


Author Nguyen, AV
Title Particle-bubble encounter probability with mobile bubble surfaces
Journal name International Journal of Mineral Processing   Check publisher's open access policy
ISSN 0301-7516
Publication date 1998-12-01
Year available 1998
Sub-type Article (original research)
DOI 10.1016/S0301-7516(98)00025-8
Open Access Status Not yet assessed
Volume 55
Issue 2
Start page 73
End page 86
Total pages 14
Place of publication AMSTERDAM
Publisher Elsevier Sci B.V.
Language eng
Abstract The mechanics of encounter between a particle and a bubble with a mobile surface and of intermediate Reynolds number has been analysed. Water velocities around the forward bubble surface are approximately predicted using the numerical solution to the Navier-Stokes equation. The order-of-magnitude analysis is employed to investigate the influence of inertia on the particle velocities around the bubble surface and the particle-bubble encounter (collision) probability. The predicted probability agrees well with the available experimental data. The particle-bubble encounter probability is strongly reduced when the inertial effect is considered. The physical reason behind this is the non-zero tangential water velocity on a mobile bubble surface, which pulls particles away from the forward bubble surface. The predicted collision angle is significantly influenced by the inertial effect. The encounter probability prediction in this article is complementary to the available encounter probability models with immobile bubble surfaces in flotation. (C) 1998 Elsevier Science B.V. All rights reserved.
Keyword particle-bubble encounter mechanics
bubble hydrodynamics
flotation
Air Bubbles
Efficiency
Flotation
Collision
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
 
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Created: Sun, 31 Mar 2013, 09:07:59 EST by Professor Anh Nguyen