A discussion of the occurrence and undesirable flotation behaviour of orthopyroxene and talc in the processing of mafic deposits

Lotter, N. O., Bradshaw, D. J., Becker, M., Parolis, L. A. and Kormos, L. J. (2008) A discussion of the occurrence and undesirable flotation behaviour of orthopyroxene and talc in the processing of mafic deposits. Minerals Engineering, 21 12-14: 905-912.


Author Lotter, N. O.
Bradshaw, D. J.
Becker, M.
Parolis, L. A.
Kormos, L. J.
Title A discussion of the occurrence and undesirable flotation behaviour of orthopyroxene and talc in the processing of mafic deposits
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 1872-9444
0892-6875
Publication date 2008-11
Sub-type Article (original research)
DOI 10.1016/j.mineng.2008.02.023
Volume 21
Issue 12-14
Start page 905
End page 912
Total pages 8
Place of publication Amsterdam , The Netherlands
Publisher Elservier B. V.
Language eng
Subject 0914 Resources Engineering and Extractive Metallurgy
091404 Mineral Processing/Beneficiation
Abstract In the processing of sulphide ores, there is generally a concentration step such as flotation, before smelting. One of the problems arising in the smelter is the presence of ‘MgO’ and one of the major challenges in the flotation step is to reduce the amount of ‘MgO’ recovered to the concentrate and thus reporting to the smelter. The reporting of ‘MgO’ in concentrates is a pseudo-representation of the range of actual magnesium-bearing minerals which are present in the ore and concentrator products. However, since the total amount of ‘MgO’ present in a concentrate is what drives the smelting problem, regardless of which mineral source, the ‘MgO’ content is the measurement of interest. One of the major sources of MgO is pyroxene, and particularly orthopyroxene. The common occurrence of talc, which also bears MgO, in association with orthopyroxene, warrants additional focus on this mineral. This paper reviews the occurrences of pyroxene and talc in sulphide ore bodies, focussing on the Merensky ore in South Africa and the Sudbury ores in Canada. The various mechanisms by which it reports to the concentrate and methods of reducing these mechanisms, are discussed.
Keyword Flotation
Orthopyroxene
Activation
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Excellence in Research Australia (ERA) - Collection
 
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Created: Tue, 19 Jan 2010, 09:06:16 EST by Rosalind Blair on behalf of Sustainable Minerals Institute