Effect of phyllosilicate minerals on the rheology, colloidal and flotation behaviour of chalcopyrite mineral

Farrokhpay, Saeed. and Ndlovu, Bulelwa (2013). Effect of phyllosilicate minerals on the rheology, colloidal and flotation behaviour of chalcopyrite mineral. In: Chemeca 2013 : Challenging Tomorrow. Chemeca 2013: Australasian Conference on Chemical Engineering, Brisbane, QLD, Australia, (1-7). 29 September-2 October 2013.

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Name Description MIMEType Size Downloads
Author Farrokhpay, Saeed.
Ndlovu, Bulelwa
Title of paper Effect of phyllosilicate minerals on the rheology, colloidal and flotation behaviour of chalcopyrite mineral
Conference name Chemeca 2013: Australasian Conference on Chemical Engineering
Conference location Brisbane, QLD, Australia
Conference dates 29 September-2 October 2013
Proceedings title Chemeca 2013 : Challenging Tomorrow
Place of Publication Hawthorn, VIC, Australia
Publisher Institution of Engineers, Australia
Publication Year 2013
Sub-type Fully published paper
Open Access Status
ISBN 9781922107077
Start page 1
End page 7
Total pages 7
Collection year 2014
Language eng
Formatted Abstract/Summary
The effects of phyllosilicate minerals, namely illite, muscovite, talc, kaolinite and montmorillonite, on the flotation of chalcopyrite were investigated. For this purpose, the effect of these phyllosilicate minerals on the froth stability, rheological properties, zeta potential as well as copper flotation grade and recovery was investigated. It was found that various phyllosilicate minerals behave differently when added to the chalcopyrite slurries, however, they all caused the flotation grade to be reduced, albeit at different levels.

The effect of different phyllosilicate minerals on the froth stability of chalcopyrite slurry followed the order of montmorillonite> muscovite >illite > kaolinite, talc. The effect on the rheology of chalcopyrite slurries was more or less negligible, except for montmorillonite where the suspension behaviour shifted from near Newtonian to pseudoplastic.

The effect of phyllosilicate minerals on the zeta potential of chalcopyrite particles was also varied. While 30% montmorillonite and kaolinite had a very minimal effect, addition of 30% muscovite to the chalcopyrite slurry resulted in the zeta potential values being closer to the pure muscovite suggesting full surface coverage of chalcopyrite particles.

Montmorillonite and talc had the most deleterious effect on chalcopyrite flotation. The deleterious effect of montmorillonite is attributed to both rheology and froth stability. The deleterious effect of muscovite is also attributed to the surface coatings of the chalcopyrite particles.
Keyword Flotation
Rheology
Clay
Phyllosilicate minerals
Chalcopyrite
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Fri, 04 Oct 2013, 13:57:46 EST by Dr Saeed Farrokhpay on behalf of Julius Kruttschnitt Mineral Research Centre