The separation of kyanite from quartz by flotation at acidic pH

Jin, Junxun, Gao, Huimin, Chen, Xumeng and Peng, Yongjun (2016) The separation of kyanite from quartz by flotation at acidic pH. Minerals Engineering, 92 221-228. doi:10.1016/j.mineng.2016.03.022

Author Jin, Junxun
Gao, Huimin
Chen, Xumeng
Peng, Yongjun
Title The separation of kyanite from quartz by flotation at acidic pH
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 2016
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.mineng.2016.03.022
Open Access Status DOI
Volume 92
Start page 221
End page 228
Total pages 8
Place of publication Doetinchem, The Netherlands
Publisher Elsevier
Collection year 2017
Language eng
Formatted abstract
An effective separation of kyanite from quartz by flotation is a challenge due to their similar surface properties and surface activation by metal ions. This study investigated the effect of pH, Fe3+ and sodium silicate on the separation of kyanite from quartz using anionic collector, sodium petroleum sulfonate (SPS). Zeta potential measurement, infrared spectroscopic analysis and chemical speciation were conducted to identify the underpinning mechanisms. It was found that a good separation of kyanite from quartz was achieved at pH = 4.0 due to the selective adsorption of SPS on kyanite. However, the presence of Fe3+ altered the electrical property on quartz which became attractive to SPS, enhanced quartz flotation and hence exacerbated the separation of kyanite from quartz. It is interesting that sodium silicate selectively depressed the flotation of iron-activated quartz by covering the activation sites and prohibiting collector adsorption. Although sodium silicate also interacted with kyanite, SPS still adsorbed on kyanite through reacting with Al atoms and therefore the depression of kyanite flotation by sodium silicate in the presence of Fe3+ was limited.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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Created: Mon, 18 Apr 2016, 13:55:10 EST by Dr Yongjun Peng on behalf of School of Chemical Engineering