The effect of sea water on copper and gold flotation in the presence of bentonite

Zhang, Ming, Peng, Yongjun and Xu, Ning (2015) The effect of sea water on copper and gold flotation in the presence of bentonite. Minerals Engineering, 77 93-98. doi:10.1016/j.mineng.2015.03.006

Author Zhang, Ming
Peng, Yongjun
Xu, Ning
Title The effect of sea water on copper and gold flotation in the presence of bentonite
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 2015-06
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.mineng.2015.03.006
Open Access Status
Volume 77
Start page 93
End page 98
Total pages 6
Place of publication Kidlington, Oxford United Kingdom
Publisher Pergamon Press
Collection year 2016
Language eng
Abstract In this study, the flotation of a copper–gold ore in the presence of 10% bentonite in tap water and sea water was investigated. It was found that bentonite had a deleterious effect on copper and gold flotation in tap water, but this deleterious effect was mitigated in sea water. Rheology measurements, settling tests and Cryo-SEM analyses were conducted to understand the underpinning mechanism. It appears that the high viscosity produced by bentonite due to its swelling capacity and cross-linked network structures negatively affected flotation hydrodynamics and therefore copper and gold flotation in tap water. It is interesting that sea water reduced the swelling capacity of bentonite and modified the association modes of bentonite platelets in flotation pulp, resulting in the breakup of links between the structures with relatively large pores, which contributed to the improvement of copper and gold flotation.
Keyword Bentonite
Sea water
Network structures
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2016 Collection
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Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
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