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The surface oxidation of pyrite in alkaline solution
Chalmers University of Technology, Department of Inorganic Chemistry.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
Luleå tekniska universitet.
1990 (Swedish)In: Journal of Applied Electrochemistry, ISSN 0021-891X, E-ISSN 1572-8838, Vol. 20, no 6, p. 1033-1039Article in journal (Refereed) Published
Abstract [en]

The collector-less flotation of pyrite has been studied by conventional techniques and is correlated to the electrochemical behaviour of pyrite in alkaline solution (1m NaClO4, pH 11). It was concluded that the initial oxidation of pyrite produces a hydrophobic sulphur rich surface together with hydrophilic iron hydroxide species. Also upon grinding, the surface is covered by hydrophilic species and therefore no significant flotation was obtained in the absence of a collector. However, collectorless flotation was readily obtained in an iron complexing solution like EDTA. This indicates that the remaining sulphur-rich layer is responsible for the floatability of pyrite under these conditions

Place, publisher, year, edition, pages
1990. Vol. 20, no 6, p. 1033-1039
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-10103DOI: 10.1007/BF01019585ISI: A1990EG18300025Scopus ID: 2-s2.0-0000534948Local ID: 8d998f80-d34c-11de-bae5-000ea68e967bOAI: oai:DiVA.org:ltu-10103DiVA, id: diva2:983043
Note
Godkänd; 1990; 20091117 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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