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Centrifugal pump performance when handling highly non-Newtonian clays and tailings slurries
GIW Industries Inc..
GIW Industries Inc..
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
2014 (English)In: 19th International Conference on Hydrotransport 2014: Golden, 24 - 26 September 2014, Curran Associates, Inc., 2014, 117-130 p.Conference paper (Refereed)
Abstract [en]

Recent loop testing performed at the GIW Hydraulic Lab (Furlan et al. 2013, 2014) has provided pump performance data for two highly non-Newtonian slurries of significantly different character: a high clay content slurry with minimal coarse solids; and a typical, low clay content, two component tailings slurry. The importance of air removal in the sump and pipe loop was demonstrated using a simple, yet novel de-aeration system. In addition to the measurement of performance losses, determination of the upper limit of "pumpability" for these slurries relative to their concentration and associated yield stress was investigated. However, once the slurry was de-aerated, no limits could be found, other than those dictated by suction side losses (NPSHA) or excessive pipeline friction gradients, indicating that the only true limit in practice is one of system economics, i.e. pump operating and capital cost. Experimentally measured pump head and efficiency were compared against corresponding predictions from two different models: the Walker and Goulas technique (Walker and Goulas, 1983), and the Graham et al. technique (Graham et al., 2009), with special focus given to the dependence of the losses on pump rotary speed.

Place, publisher, year, edition, pages
Curran Associates, Inc., 2014. 117-130 p.
National Category
Water Engineering
Research subject
Water Resources Engineering
URN: urn:nbn:se:ltu:diva-34835ScopusID: 2-s2.0-84922985451Local ID: 922e5121-9f25-4570-9daf-37c2eb85815eISBN: 978-1-63439-444-4 (print)OAI: diva2:1008086
19th International Conference on Hydrotransport, 24-26 Septembeer 2014, Golden, Colorado
Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2016-12-05Bibliographically approved

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