Flotation of chalcopyrite in water containing bacteria

Liu, Wenying, Moran, Chris and Vink, Suzanna (2012). Flotation of chalcopyrite in water containing bacteria. In: Water in Mineral Processing. First International Symposium on Water in Mineral Processing, Seattle, United States, (165-173). 19 - 22 February 2012.

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Name Description MIMEType Size Downloads
Author Liu, Wenying
Moran, Chris
Vink, Suzanna
Title of paper Flotation of chalcopyrite in water containing bacteria
Conference name First International Symposium on Water in Mineral Processing
Conference location Seattle, United States
Conference dates 19 - 22 February 2012
Proceedings title Water in Mineral Processing
Journal name Water in Mineral Processing - Proceedings of the 1st International Symposium
Place of Publication Englewood, CO, United States
Publisher Society for Mining Metallurgy and Exploration
Publication Year 2012
Sub-type Fully published paper
ISBN 9780873353564
9780873353496
Start page 165
End page 173
Total pages 9
Collection year 2013
Language eng
Formatted Abstract/Summary
The use of multiple sources of water supply and introducing water reuse in mineral processing have been part of the operating philosophy for the minerals industry to save freshwater and reduce mine water discharge. A consequence of implementing these practices is that water quality can be compromised, which in turn can impact flotation performance. A number of studies have shown that dissolved abiotic water constituents can have different effects on flotation performance depending on the operating conditions and reagent regimes. However, far less is known about the impacts and processes associated with biotic water constituents, including microorganisms. In this study, we investigated the effect of bacteria (E. coli ) on mineral (chalcopyrite) flotation performance using both microflotation and scale-up batch flotation tests. Microflotation results indicated that the presence of E. coli in water had an adverse effect on the flotation of chalcopyrite. The magnitude of the adverse effect increased with the increase of bacterial cell concentration. The adverse effect could be mitigated to different extents by increasing the collector concentration depending on the bacterial cell concentration. The adverse effect was also observed in batch flotation tests. Froth images taken showed that the bubble size and bubble load were affected by the presence of the bacteria.
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Fri, 12 Apr 2013, 20:14:01 EST by Wenying Liu on behalf of Centre for Water in the Minerals Industry