Froth imaging, air recovery and bubble loading to describe flotation bank performance

Barbian, Nicolas, Cilliers, Jan J., Morar, Sameer H. and Bradshaw, Dee J. (2007) Froth imaging, air recovery and bubble loading to describe flotation bank performance. International Journal of Mineral Processing, 84 1-4: 81-88. doi:10.1016/j.minpro.2006.10.009

Author Barbian, Nicolas
Cilliers, Jan J.
Morar, Sameer H.
Bradshaw, Dee J.
Title Froth imaging, air recovery and bubble loading to describe flotation bank performance
Journal name International Journal of Mineral Processing   Check publisher's open access policy
ISSN 0301-7516
Publication date 2007-10-19
Year available 2007
Sub-type Article (original research)
DOI 10.1016/j.minpro.2006.10.009
Volume 84
Issue 1-4
Start page 81
End page 88
Total pages 8
Place of publication Amsterdam, The Netherlands
Publisher Elsevier
Language eng
Subject 0403 Geology
040306 Mineralogy and Crystallography
1003 Industrial Biotechnology
Abstract Video image analysis and direct sampling of the froth surface were combined to investigate the relationship between different imaging parameters accounting for the structural features of the froth, and the separation efficiency of a flotation bank. The bubble solids loading and the air recovery were measured to introduce a new structural parameter, the froth volumetric mineral loading, additionally a new image analysis measurement, the cross correlation peak, was investigated. Both parameters were shown to be linked to the mobility of the bubbles on the froth surface. The cross correlation peak was found to be closely related to the volumetric mineral loading measured on the froth surface. Both parameters were found to follow a drop in froth stability and mineral attachment down the bank, which resulted in a relatively wetter and less viscous froth, and therefore a higher bubble mobility on the froth surface. As a result, the cross correlation peak was shown to be related to the mineral grade in the concentrate, while further analysis highlighted the possible use of a combination of air recovery and cross correlation peak to give a closer prediction of the bank performance.
Keyword Froth flotation
Image analysis
Bubble loading
Froth stability
Air recovery
Q-Index Code C1
Additional Notes Special Issue To Honor The Late Professor R. Peter King

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Excellence in Research Australia (ERA) - Collection
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Created: Thu, 07 Jan 2010, 11:05:02 EST by Macushla Boyle on behalf of Sustainable Minerals Institute