Influence of liberation on bubble-particle attachment time in flotation

Albijanic, Boris, Subasinghe, G. K. Nimal, Bradshaw, Dee J. and Nguyen, Anh V. (2015) Influence of liberation on bubble-particle attachment time in flotation. Minerals Engineering, 74 156-162. doi:10.1016/j.mineng.2014.08.004


Author Albijanic, Boris
Subasinghe, G. K. Nimal
Bradshaw, Dee J.
Nguyen, Anh V.
Title Influence of liberation on bubble-particle attachment time in flotation
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
1872-9444
Publication date 2015-04
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.mineng.2014.08.004
Open Access Status
Volume 74
Start page 156
End page 162
Total pages 7
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Collection year 2015
Language eng
Abstract Flotation is controlled by the bubble–particle attachment mechanism which depends on the particle surface properties i.e., the particle composition, the surface liberation of valuable minerals and collector adsorption. This paper focuses on using the bubble–particle attachment method to understand the factors affecting attachment time. The attachment time measurements were performed with sized concentrates obtained by flotation of a copper sulphide ore (Northparkes Mine, Australia) in a mechanically agitated batch flotation cell. Quantitative mineral liberation analysis was used to determine the mineralogy of flotation concentrates. The results showed that the higher the amount of highly and moderately liberated copper minerals in flotation concentrates, the lower the attachment time. By using attachment time and collector dosage, we defined a non-linear empirical correlation to estimate Cu grade. The proposed empirical correlation has shown a satisfactory agreement between the calculated and the experimental Cu grade. These results showed that attachment time measurements are related to the Cu grade. This relationship may be used in the future to develop a practical method (without assays) to monitor changing grade for a specified system (flotation plant). It also may be possible to infer potential grade if mineralogy samples are available, but not enough samples are available for conventional flotation tests. However this requires a significant amount of further work.
Keyword Froth flotation
Attachment time
Mineral liberation
Empirical correlation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
School of Chemical Engineering Publications
Official 2015 Collection
 
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Created: Thu, 02 Oct 2014, 14:08:42 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre