Magnetic resonance imaging characterisation of the influence of flowrate on liquid distribution in drip irrigated heap leaching

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dc.contributor.authorFagan-Endres, Marijke
dc.contributor.authorHarrison, Sue
dc.contributor.authorJohns, Michael L
dc.contributor.authorSederman, Andrew J
dc.date.accessioned2017-09-08T09:44:38Z
dc.date.available2017-09-08T09:44:38Z
dc.date.issued2015-12
dc.description.abstractLiquid irrigation is one of the key process control parameters following the construction of an ore leaching heap. This study uses 3D magnetic resonance imaging (MRI) to examine non-invasively the effect of liquid flowrate changes on heap hydrology when drip irrigation is used. Experimental results from a vertical column show that the increase in flowrate causes an increase in the number of rivulets in the ore bed. The new rivulets were found to be thicker, and their development caused an increase in liquid-solid contacting area which is considered advantageous for metal ion recovery. Experiments performed on larger samples showed that the effects of flowrate changes were limited to the region directly below the drip emitter because the increase in flowrate caused an increase in macro-pore flow and not capillary retention of liquid. Therefore the increase in flowrate was not found to perturb liquid distribution patterns in a way that would be substantially advantageous to heap leaching recoveries.en_ZA
dc.identifier.apacitationFagan-Endres, M., Harrison, S., Johns, M. L., & Sederman, A. J. (2015). Magnetic resonance imaging characterisation of the influence of flowrate on liquid distribution in drip irrigated heap leaching. <i>Hydrometallurgy</i>, http://hdl.handle.net/11427/25134en_ZA
dc.identifier.chicagocitationFagan-Endres, Marijke, Sue Harrison, Michael L Johns, and Andrew J Sederman "Magnetic resonance imaging characterisation of the influence of flowrate on liquid distribution in drip irrigated heap leaching." <i>Hydrometallurgy</i> (2015) http://hdl.handle.net/11427/25134en_ZA
dc.identifier.citationFagan-Endres M.A., Harrison S.T.L., Johns M.L., Sederman A.J. (2015) Magnetic resonance imaging characterisation of the influence of flowrate on liquid distribution in drip irrigated heap leaching. Hydrometallurgy, 158, pp. 157-164en_ZA
dc.identifier.issn0304-386Xen_ZA
dc.identifier.ris TY - Journal Article AU - Fagan-Endres, Marijke AU - Harrison, Sue AU - Johns, Michael L AU - Sederman, Andrew J AB - Liquid irrigation is one of the key process control parameters following the construction of an ore leaching heap. This study uses 3D magnetic resonance imaging (MRI) to examine non-invasively the effect of liquid flowrate changes on heap hydrology when drip irrigation is used. Experimental results from a vertical column show that the increase in flowrate causes an increase in the number of rivulets in the ore bed. The new rivulets were found to be thicker, and their development caused an increase in liquid-solid contacting area which is considered advantageous for metal ion recovery. Experiments performed on larger samples showed that the effects of flowrate changes were limited to the region directly below the drip emitter because the increase in flowrate caused an increase in macro-pore flow and not capillary retention of liquid. Therefore the increase in flowrate was not found to perturb liquid distribution patterns in a way that would be substantially advantageous to heap leaching recoveries. DA - 2015-12 DB - OpenUCT DP - University of Cape Town J1 - Hydrometallurgy LK - https://open.uct.ac.za PB - University of Cape Town PY - 2015 SM - 0304-386X T1 - Magnetic resonance imaging characterisation of the influence of flowrate on liquid distribution in drip irrigated heap leaching TI - Magnetic resonance imaging characterisation of the influence of flowrate on liquid distribution in drip irrigated heap leaching UR - http://hdl.handle.net/11427/25134 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/25134
dc.identifier.urihttps://doi.org/10.1016/j.hydromet.2015.10.003
dc.identifier.vancouvercitationFagan-Endres M, Harrison S, Johns ML, Sederman AJ. Magnetic resonance imaging characterisation of the influence of flowrate on liquid distribution in drip irrigated heap leaching. Hydrometallurgy. 2015; http://hdl.handle.net/11427/25134.en_ZA
dc.languageengen_ZA
dc.publisherElsevieren_ZA
dc.publisher.departmentCentre for Bioprocess Engineering Research
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.rightsCreative Commons Attribution-NonCommercial license*
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/en_ZA
dc.sourceHydrometallurgyen_ZA
dc.source.urihttps://www.journals.elsevier.com/hydrometallurgy
dc.titleMagnetic resonance imaging characterisation of the influence of flowrate on liquid distribution in drip irrigated heap leachingen_ZA
dc.typeJournal Articleen_ZA
uct.subject.keywordsMRIen_ZA
uct.subject.keywordsHeap leachingen_ZA
uct.subject.keywordsFlowrateen_ZA
uct.subject.keywordsInterfacial areaen_ZA
uct.subject.keywordsIrrigationen_ZA
uct.type.filetypeImage
uct.type.filetypeResearch Article
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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