A value based approach to leach optimization at Rössing Uranium Limited

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dc.contributor.advisorPetersen, Jochenen_ZA
dc.contributor.advisorBecker, Meganen_ZA
dc.contributor.authorJansen Van Rensburg, Nicole Karenen_ZA
dc.date.accessioned2014-11-05T03:49:14Z
dc.date.available2014-11-05T03:49:14Z
dc.date.issued2014en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractThis thesis describes the development and execution of an experimental leach programme and the use of a techno-economic model to determine improved operating set-points for a uraninite/uranophane ore body, for plant-scale implementation, that consistently maximise value delivery. A mineralogical investigation of Rössing leach samples indicated that liberated uraninite remains in the leach residue, providing evidence of non-optimal leach conditions such as prevailing redox potential, incomplete leaching within the normal residence time or galvanic hindrance. Specific focus was, therefore, placed on the effect of oxidation reduction potential (ORP) on uranium extraction and reagent consumption and the determination of an improved ORP set-point as a function of ore type, residence time and the economic environment.en_ZA
dc.identifier.apacitationJansen Van Rensburg, N. K. (2014). <i>A value based approach to leach optimization at Rössing Uranium Limited</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering. Retrieved from http://hdl.handle.net/11427/9117en_ZA
dc.identifier.chicagocitationJansen Van Rensburg, Nicole Karen. <i>"A value based approach to leach optimization at Rössing Uranium Limited."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2014. http://hdl.handle.net/11427/9117en_ZA
dc.identifier.citationJansen Van Rensburg, N. 2014. A value based approach to leach optimization at Rössing Uranium Limited. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Jansen Van Rensburg, Nicole Karen AB - This thesis describes the development and execution of an experimental leach programme and the use of a techno-economic model to determine improved operating set-points for a uraninite/uranophane ore body, for plant-scale implementation, that consistently maximise value delivery. A mineralogical investigation of Rössing leach samples indicated that liberated uraninite remains in the leach residue, providing evidence of non-optimal leach conditions such as prevailing redox potential, incomplete leaching within the normal residence time or galvanic hindrance. Specific focus was, therefore, placed on the effect of oxidation reduction potential (ORP) on uranium extraction and reagent consumption and the determination of an improved ORP set-point as a function of ore type, residence time and the economic environment. DA - 2014 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2014 T1 - A value based approach to leach optimization at Rössing Uranium Limited TI - A value based approach to leach optimization at Rössing Uranium Limited UR - http://hdl.handle.net/11427/9117 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/9117
dc.identifier.vancouvercitationJansen Van Rensburg NK. A value based approach to leach optimization at Rössing Uranium Limited. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2014 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/9117en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Chemical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.titleA value based approach to leach optimization at Rössing Uranium Limiteden_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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