Convective mixing in a wet planar foam

Title: Convective mixing in a wet planar foam
Creator: Ireland, Peter M.
Relation: Chemical Engineering Science Vol. 101, p. 554-564
Publisher Link: http://dx.doi.org/10.1016/j.ces.2013.07.023
Publisher: Elsevier
Resource Type: journal article
Date: 2013
Description: Buoyancy-driven convective flows have a substantial effect on the performance of the froth layer in flotation cells, particularly when wash water is applied, but are relatively poorly understood. This study presents some experiments on convective flows in a foam undergoing forced drainage. A flat cell was used to create a planar foam, and a dye tracer was used to reveal the flow patterns, which were digitally imaged. The eddy scales and mixing behaviour of the flows are assessed using several different metrics, and their dependence on liquid and gas flow rates in the foam is assessed and compared. Finally, the implications of these findings for the effectiveness of wash water in flotation froths are discussed.
Subject: foam; flotation; convection; bubble columns; mixing
Identifier: http://hdl.handle.net/1959.13/1063542
Identifier: uon:17317
Identifier: ISSN:0009-2509
Language: eng
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