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Cost-effective pumping of coarse mineral products using fine sands
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Architecture and Water.
GIW Industries Inc..
1997 (English)In: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 94, no 3, p. 191-194Article in journal (Refereed) Published
Abstract [en]

Coarse mineral particles with sizes of up to 200 mm can be pumped energy-effectively together with sands (< 1 mm) under nearly pseudohomogeneous conditions at volumetric solids concentrations of up to 40%. Recent experimental results indicate that particles with sizes of 0.1-0.5 mm play an important role in reducing pipe wall friction. Experimental results in pipelines with diameters of up to 0.44 m have here been used in a brief demonstration of industrial applications: integrated systems for waste rock transportation together with fine-grained tailings, coarse mineral particle pumping from open-pit mines or to disposal with dry deposition and recirculation of water and fine particles. Experiments with a crushed rock product (20-38 mm) pumped at a volumetric concentration of 13% showed that the friction losses were reduced considerably by particle degradation during the circulation in the pipeline loop. Circulatory effects must therefore be carefully considered when using coarse-particle loop results in the design of industrial once-through systems

Place, publisher, year, edition, pages
1997. Vol. 94, no 3, p. 191-194
National Category
Water Engineering
Research subject
Water Resources Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-9694DOI: 10.1016/S0032-5910(97)03292-0ISI: A1997YK11700002Scopus ID: 2-s2.0-0343906867Local ID: 85b351c0-2d53-11dd-9c9b-000ea68e967bOAI: oai:DiVA.org:ltu-9694DiVA, id: diva2:982632
Note
Godkänd; 1997; 20080529 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Sellgren, Anders

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