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Predicting flotation behaviour – the interaction between froth stability and performance

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Title: Predicting flotation behaviour – the interaction between froth stability and performance
Authors: Brito Parada, P
Neethling, S
Item Type: Journal Article
Abstract: Froth behaviour has a major impact on the overall performance of flotation cells, with the froth controlling the water recovery and entrainment, as well as having a significant impact on the recovery. Froth stability, including bubble coalescence and the bursting of the bubbles at the froth surface, are the key drivers of froth performance. Even though the froth stability is hard to directly control, it is important to understand how this stability impacts froth performance parameters such as the water recovery. In this paper it is shown how a theoretical understanding of froth behaviour based on foam physics can be used to link stability to performance. The extent to which these simplified theoretical relationships can describe the complex behaviour seen in real flotation systems at both the laboratory and industrial scale are explored. The paper shows how bursting flux depends upon gas flux and how this influences the relationship between the gas flux and the water recovery.
Issue Date: 1-May-2018
Date of Acceptance: 14-Feb-2018
URI: http://hdl.handle.net/10044/1/57842
DOI: 10.1016/j.mineng.2018.02.002
ISSN: 0892-6875
Publisher: Elsevier
Start Page: 60
End Page: 65
Journal / Book Title: Minerals Engineering
Volume: 120
Issue: 1
Copyright Statement: © 2018 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Outotec (Finland)
Funder's Grant Number: CR-150100-10
Keywords: Science & Technology
Technology
Physical Sciences
Engineering, Chemical
Mineralogy
Mining & Mineral Processing
Engineering
Froth stability
Froth physics
Water recovery
Flotation performance
Modelling
FLOWING FOAMS
AIR RECOVERY
PARTICLES
DRAINAGE
LIQUID
0306 Physical Chemistry (incl. Structural)
0904 Chemical Engineering
0914 Resources Engineering and Extractive Metallurgy
Mining & Metallurgy
Publication Status: Published
Online Publication Date: 2018-02-24
Appears in Collections:Earth Science and Engineering
Faculty of Engineering