Behaviour of swelling clays versus non-swelling clays in flotation

Farrokhpay, Saeed, Ndlovu, Bulelwa and Bradshaw, Dee (2016) Behaviour of swelling clays versus non-swelling clays in flotation. Minerals Engineering, 96-97 59-66. doi:10.1016/j.mineng.2016.04.011

Author Farrokhpay, Saeed
Ndlovu, Bulelwa
Bradshaw, Dee
Title Behaviour of swelling clays versus non-swelling clays in flotation
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 2016-04-21
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.mineng.2016.04.011
Open Access Status Not Open Access
Volume 96-97
Start page 59
End page 66
Total pages 8
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Collection year 2017
Language eng
Abstract The deleterious effects of clays on flotation performance are widely acknowledged but the mechanisms involved are not clearly established. Moreover, the concentrations beyond which clay minerals become problematic are not clearly defined. One major parameter is the difference between swelling and non-swelling clays which is evaluated in this study. The ore slurry pulp rheology and froth stability were monitored in the absence and presence of different clay minerals. It was found that swelling clays can adversely affect the flotation performance mainly via adsorbing water which changes the rheology and froth stability, reducing both flotation grade and recovery. Non-swelling clays had a lower effect on the rheology. Kaolinite increases the froth stability and reduces the flotation grade but illite showed the least effect on the flotation performance in this study. The potential mechanisms and critical concentrations are discussed.
Keyword Clay
Froth stability
Swelling clays
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
HERDC Pre-Audit
Sustainable Minerals Institute Publications
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