A value based approach to leach optimization at Rössing Uranium Limited

 

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dc.contributor.advisor Petersen, Jochen en_ZA
dc.contributor.advisor Becker, Megan en_ZA
dc.contributor.author Jansen Van Rensburg, Nicole Karen en_ZA
dc.date.accessioned 2014-11-05T03:49:14Z
dc.date.available 2014-11-05T03:49:14Z
dc.date.issued 2014 en_ZA
dc.identifier.citation Jansen Van Rensburg, N. 2014. A value based approach to leach optimization at Rössing Uranium Limited. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/9117
dc.description Includes bibliographical references. en_ZA
dc.description.abstract 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. en_ZA
dc.language.iso eng en_ZA
dc.title A value based approach to leach optimization at Rössing Uranium Limited en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Department of Chemical Engineering en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Jansen 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/11427/9117 en_ZA
dc.identifier.chicagocitation Jansen 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/11427/9117 en_ZA
dc.identifier.vancouvercitation Jansen 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/11427/9117 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


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