The flotation of fine pyrite using colloidal gas aphrons

Cilliers, J. J. and Bradshaw, D. J. (1996) The flotation of fine pyrite using colloidal gas aphrons. Minerals Engineering, 9 2: 235-241. doi:10.1016/0892-6875(96)00006-4

Author Cilliers, J. J.
Bradshaw, D. J.
Title The flotation of fine pyrite using colloidal gas aphrons
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 1996
Year available 1996
Sub-type Article (original research)
DOI 10.1016/0892-6875(96)00006-4
Open Access Status
Volume 9
Issue 2
Start page 235
End page 241
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Collection year 1996
Language eng
Formatted abstract
Fine mineral flotation is known to be problematic, however there is evidence that flotation performance is improved by the use of fine bubbles. In this work, a comparison is made between the flotation performance of two flotation systems; a conventional batch flotation cell and flotation using a spinning disc impeller as is used to generate very small bubble suspensions called colloidal gas aphrons (CGA's). The comparison of the CGA and the standard impeller was made using an artificial ore consisting of gravity concentrated pyrite from Durban Roodepoort Deep (South Africa) and quartz from Delmas (South Africa) finer than 38 microns. The collector was sodium n-propyl xanthate, the frother Dow 400. The comparison of the flotation performance was made at the following conditions; pH 4 and 8 and copper sulphate addition nil and 50 g/ton. The froths found in the two systems had significantly different structures. The CGA impeller yielded a froths surface with considerably larger bubbles and a wider distribution of bubble sizes than the conventional batch cell. The CGA float yielded higher grades (50% sulphur) than the conventional float (35%), although the flotation rate was somewhat lower. The results obtained indicate that this flotation system may have application for the selective recovery of finely ground minerals.
Keyword Fine particle processing
Flotation bubbles
Flotation froth
Flotation kinetics
Sulphide ores
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Julius Kruttschnitt Mineral Research Centre Publications
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Citation counts: TR Web of Science Citation Count  Cited 19 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 22 times in Scopus Article | Citations
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Created: Mon, 08 Dec 2014, 13:40:22 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre