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Effects of non-Newtonian mineral suspensions on the performance of centrifugal pumps
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
GIW Industries Inc..
Conversion Systems, Horsham.
1999 (English)In: Mineral Processing and Extractive Metallurgy Review, ISSN 0882-7508, E-ISSN 1547-7401, Vol. 20, no 1, p. 239-249Article in journal (Refereed) Published
Abstract [en]

Experimental results were obtained with various industrial suspensions with densities of 1100 to 1600 kg/m3 using a 0.15 by 0.1 m four-vane centrifugal slurry pump with an impeller diameter of 0.63 m operating at 650-850 rpm. The non-Newtonian behaviour for a fixated scrubber sludge and a red mud product was characterised in pipeline loops with diameters of 0.075-0.2 m. The lowering of the pump water head and efficiency at the best efficiency flow rate region was at a maximum about 10 and 20%, respectively. With the scrubber sludge, a sharp reduction in head occurred at flow rates below 40% of the best efficiency value, resulting in an unstable head curve. This result is used to demonstrate the risk of unstable operation if a Newtonian correction procedure with a high viscosity is applied giving very large reductions in efficiency and a shift of the best efficiency point to smaller flow rates

Place, publisher, year, edition, pages
1999. Vol. 20, no 1, p. 239-249
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-5266DOI: 10.1080/08827509908962475Local ID: 3538f090-2d5f-11dd-9c9b-000ea68e967bOAI: oai:DiVA.org:ltu-5266DiVA, id: diva2:978140
Note
Godkänd; 1999; 20080529 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Sellgren, Anders

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