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Redox control in a pilot flotation column
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.ORCID iD: 0000-0002-8032-9388
Luleå tekniska universitet.
1996 (English)In: Minerals Engineering, ISSN 0892-6875, E-ISSN 1872-9444, Vol. 9, no 1, p. 73-83Article in journal (Refereed) Published
Abstract [en]

Results from pilot-column flotation tests on a lead-zinc ore show that it is possible to control the redox potential of the column pulp by varying the oxygen activity of the flotation gas fed to the spargers. As a result, the process changes so that the fine zinc minerals are more actively floating in an oxidising environment, at the same time xanthate and frother consumptions increase.The placement of electrodes in the column does change the redox potential readings but only as a result of a change in the oxygen concentration of the pulp. However, the values from a Glassy-Carbon (GC) electrode are consistently lower than those from a Pt foil electrode at the same location. Actual positions of operating points as measured by GCelectrodes fall within the theoretical area for precipitation of lead xanthate.

Place, publisher, year, edition, pages
1996. Vol. 9, no 1, p. 73-83
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-10405DOI: 10.1016/0892-6875(95)00132-8ISI: A1996TP60600006Scopus ID: 2-s2.0-0029778482Local ID: 93637920-a15a-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-10405DiVA, id: diva2:983350
Note
Godkänd; 1996; 20070111 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Pålsson, Bertil

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