An impedance study of the adsorption of CuSO4 and SIBX on pyrrhotite samples of different provenances

Ekmekçi, Z., Becker, M., Tekes, E. Bagci and Bradshaw, D. (2010). An impedance study of the adsorption of CuSO4 and SIBX on pyrrhotite samples of different provenances. In: D. J. Bradshaw, J.-P. Franzidis and B. A. Wills, Minerals Engineering: Froth Flotation. Proceedings of: 4th International Flotation Conference. Flotation 09: 4th International Flotation Conference, Cape Town, WC, S.A., (903-907). 9-12 November 2009. doi:10.1016/j.mineng.2010.02.007


Author Ekmekçi, Z.
Becker, M.
Tekes, E. Bagci
Bradshaw, D.
Title of paper An impedance study of the adsorption of CuSO4 and SIBX on pyrrhotite samples of different provenances
Formatted title
An impedance study of the adsorption of CuSO4 and SIBX on pyrrhotite samples of different provenances
Conference name Flotation 09: 4th International Flotation Conference
Conference location Cape Town, WC, S.A.
Conference dates 9-12 November 2009
Convener Minerals Engineering International
Proceedings title Minerals Engineering: Froth Flotation. Proceedings of: 4th International Flotation Conference   Check publisher's open access policy
Journal name Minerals Engineering   Check publisher's open access policy
Place of Publication Amsterdam, Netherlands
Publisher Elsevier
Publication Year 2010
Year available 2009
Sub-type Fully published paper
DOI 10.1016/j.mineng.2010.02.007
Open Access Status Not yet assessed
ISSN 0892-6875
1872-9444
Editor D. J. Bradshaw
J.-P. Franzidis
B. A. Wills
Volume 23
Issue 11-13
Start page 903
End page 907
Total pages 5
Language eng
Abstract/Summary The non-stoichiometric sulfide mineral pyrrhotite (Fe S), common to many nickel ore deposits, occurs in differing crystallographic forms and compositions. The processing of pyrrhotite from these ores through froth flotation is based on the surface properties of the sulfides and since pyrrhotite is a metallic conductor, it is of interest to characterise the surface properties of pyrrhotite with respect to its electrochemical state. In this study, a series of pyrrhotite samples derived from Canada, South Africa, and Botswana whose mineralogy is well characterised, were used for electrochemical impedance spectroscopy (EIS). The behaviour of the different pyrrhotite samples were compared in terms of the effect of pH (7 and 10), collector addition (SIBX) and copper activation and the results correlated with microflotation tests. The EIS results were then used to interpret and understand the differences in flotation performance of the pyrrhotite samples under the different reagent conditions and provide some answers as to why the success of copper activation on pyrrhotite is so variable.
Formatted Abstract/Summary
The non-stoichiometric sulfide mineral pyrrhotite (Fe(1−x)S), common to many nickel ore deposits, occurs in differing crystallographic forms and compositions. The processing of pyrrhotite from these ores through froth flotation is based on the surface properties of the sulfides and since pyrrhotite is a metallic conductor, it is of interest to characterise the surface properties of pyrrhotite with respect to its electrochemical state. In this study, a series of pyrrhotite samples derived from Canada, South Africa, and Botswana whose mineralogy is well characterised, were used for electrochemical impedance spectroscopy (EIS). The behaviour of the different pyrrhotite samples were compared in terms of the effect of pH (7 and 10), collector addition (SIBX) and copper activation and the results correlated with microflotation tests. The EIS results were then used to interpret and understand the differences in flotation performance of the pyrrhotite samples under th e different reagent conditions and provide some answers as to why the success of copper activation on pyrrhotite is so variable.
© 2010 Elsevier Ltd. All rights reserved.
Subjects 2207 Control and Systems Engineering
1600 Chemistry
1909 Geotechnical Engineering and Engineering Geology
2210 Mechanical Engineering
Keyword Sulfide ores
Froth flotation
Redox reactions
Electrochemical impedance analysis
Xanthate adsorption
Ethyl xanthate
Flotation
Sulfide
XPS
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Presented during the Symposium on Applications and Plant Practice. Published under "Froth Flotation - Fundamentals".

Document type: Conference Paper
Sub-type: Fully published paper
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Official 2011 Collection
 
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Created: Sun, 28 Nov 2010, 10:01:36 EST