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Influence of grinding method on complex sulphide ore flotation: a pilot plant study
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
Departamento de Geologia, CCE/UFRN, Campus Universitario, 59.072, Natal.
Luleå University of Technology.
1993 (English)In: International Journal of Mineral Processing, ISSN 0301-7516, E-ISSN 1879-3525, Vol. 38, no 3, p. 157-175Article in journal (Refereed) Published
Abstract [en]

The present work deals with plant investigations on the influence of conventional and autogenous grinding methods in the floatation of a complex sulphide ore. The study includes the investigation of the particle size and shape analysis and the pulp chemical measurements-Eh, pH, O2 concentration of cations and anions, at several stages of the grinding and flotation circuits. The rougher floatation concentrates of the Cu-Pb and Zn circuits were analysed to evaluate the floatation behaviour of chalcopyrite, galena and sphalerite. The results indicate better liberation of minerals in coarse size fractions for the pulp ground by autogenous mill while conventional grinding shows higher degree of liberation in the fine size range. Metallurgical analyses of the final floatation concentrates shows higher recoveries of Cu, Pb and Zn for the pulp ground by autogenous milling. The grades of Cu and Pb were better with conventional grinding but the recoveries were less than those obtained by autogenous grinding. Several interesting observations concerning pulp chemistry (e. g. the concentrations of Fe ions is lower in pulps ground by conventional method than by autogenous means!) are discussed.

Place, publisher, year, edition, pages
1993. Vol. 38, no 3, p. 157-175
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-8592DOI: 10.1016/0301-7516(93)90073-JScopus ID: 2-s2.0-0027606724Local ID: 71c80530-b5df-11db-bf94-000ea68e967bOAI: oai:DiVA.org:ltu-8592DiVA, id: diva2:981530
Note
Godkänd; 1993; 20070206 (pafi)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Forssberg, Eric

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