The effect of collectors and their interactions with depressants on the behaviour of the froth phase in flotation

Bradshaw, D. J., O'Connor, C. T. and Harris, P. J. (2005). The effect of collectors and their interactions with depressants on the behaviour of the froth phase in flotation. In: Graeme J. Jameson, Conference Proceedings: Centenary of Flotation Symposium. Centenary of Flotation Symposium, Brisbane, Australia, (329-333). 6-9 June 2005.


Author Bradshaw, D. J.
O'Connor, C. T.
Harris, P. J.
Title of paper The effect of collectors and their interactions with depressants on the behaviour of the froth phase in flotation
Conference name Centenary of Flotation Symposium
Conference location Brisbane, Australia
Conference dates 6-9 June 2005
Proceedings title Conference Proceedings: Centenary of Flotation Symposium
Place of Publication Carlton South, Vic., Australia
Publisher Australasian Institute of Mining and Metallurgy (AusIMM)
Publication Year 2005
Sub-type Fully published paper
ISBN 9781920806316
1920806318
Editor Graeme J. Jameson
Start page 329
End page 333
Total pages 5
Language eng
Abstract/Summary Collectors are used to impart hydrophobicity on particles thus increasing their chances of reporting to the froth phase. Also, the extent to which naturally hydrophobic gangue particles, such as talcaceous minerals, report to the froth can be reduced by the use of depressants. Thus the use of collectors and depressants will directly influence the extent to which hydrophobic particles report to the froth. However these hydrophobic particles will also have a direct effect on the characteristics of the froth phase, more strongly hydrophobic particles causing a reduction in the stability of the froth with the expected concomitant effects on grade and recovery. This study included microflotation (ie frothless flotation) and batch flotation of various ores using a number of different collectors and depressants and a newly developed froth imaging device (SmartfrothTM). Flotation performance was characterised by mass and water recovery, and recoveries and grades of the valuables. This paper shows how the various reagents influenced the behaviour of the pulp and froth phases. The critical importance of managing the type and dosage of reagents used in flotation with a view to optimising their influence on the froth phase is discussed.
Subjects 0914 Resources Engineering and Extractive Metallurgy
091404 Mineral Processing/Beneficiation
Keyword Minerals processing
Depressants
Flotation
microflotation
froth phase
Q-Index Code EX
Additional Notes Publication series (Australasian Institute of Mining and Metallurgy) ; 2005/5. -- Selected papers published in Minerals Engineering Volume 19, Issues 6-8, 2006

 
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Created: Mon, 25 Jan 2010, 12:04:29 EST by Tara Johnson on behalf of Sustainable Minerals Institute