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Pumping evaluations with paste tailings thickened close to the surface disposal area
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
2007 (English)In: Hydrotransport 17: the 17th International Conference on the Hydraulic Transport of Solids ; [7 - 11 May 2007, Cape Town, South Africa], South African Institute of Mining and Metallurgy, 2007, 561-574 p.Conference paper (Refereed)
Abstract [en]

An elevated location of a paste thickener on a ridge close to the disposal area is considered at a Swedish iron ore mine. About 0.7 Mtonnes of thickened tailings are planned to be layered as paste in the vicinity of the thickener over several years with pipeline lengths of up to 900 m after about 20 years. In order to clarify the pipeline pumping characteristics of the tailings product for volumetric solids concentration from 40 to 50%, experiments in loop systems with pipeline inner diameters from 0.063 to 0.152 m have been carried out with various types of pumps. The results and comparisons carried out here showed that the performance of centrifugal pumps cannot simply be related to the rheology, but factors related to pump design and build-up tendencies of material within the pump and other particle properties may be of equal importance. During the first years of operation only one thickener underflow pump is required. The reliability and performance for various pump configurations are planned to be investigated systematically in order to meet the most effective longterm solution for paste thickener operation, pipeline distribution and placement in the disposal area as the discharge point advances over the life of the project.

Place, publisher, year, edition, pages
South African Institute of Mining and Metallurgy, 2007. 561-574 p.
, Symposium series / The South African Institute of Mining and Metallurgy, 46
Research subject
Water Resources Engineering
URN: urn:nbn:se:ltu:diva-32693Local ID: 7432a320-c029-11dc-b185-000ea68e967bOAI: diva2:1005927
Hydrotransport : 07/05/2007 - 10/05/2007
Godkänd; 2007; 20080111 (ysko)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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