Investigation of operating parameters in a vertical stirred mill

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dc.contributor.advisorVan der Westhuizen, Andries P Pen_ZA
dc.contributor.authorEdwards, Garren Chaden_ZA
dc.date.accessioned2016-07-18T12:56:34Z
dc.date.available2016-07-18T12:56:34Z
dc.date.issued2016en_ZA
dc.description.abstractDue to the depletion of coarser grained ores, more mineralogically complex ores are being treated. These complex ores usually have finer grained valuable minerals. Liberation of these finer grained valuable minerals lies in grinding finer. Grinding to these fine sizes is energy intensive and using standard ball mills are energy inefficient at these sizes (P80 < 75μm). Therefore, stirred mills are becoming increasingly prevalent in the mineral processing industry. In order to optimize these mills, the effects and mechanisms of the significant variables need to be understood. This project investigated operating parameters against performance in a laboratory scale vertical stirred mill (Deswik mill), in an ultrafine grinding (UFG) application of MG2 reef in the bushveld igneous complex. The operating variables that were investigated are stirrer speed, solids concentration, media size and media filling. The Kwade stress energy model was tested on the grinding results. The grinding performance was quantified in two ways, i.e. grinding efficiency and grinding rate. The grinding performance for this study was also investigated through a statistical analysis. The experiments was designed using a face centred central composite design (FCCD) and the results was statistically analysed using a design of experiments (DOE) software.en_ZA
dc.identifier.apacitationEdwards, G. C. (2016). <i>Investigation of operating parameters in a vertical stirred mill</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Minerals Research. Retrieved from http://hdl.handle.net/11427/20442en_ZA
dc.identifier.chicagocitationEdwards, Garren Chad. <i>"Investigation of operating parameters in a vertical stirred mill."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Minerals Research, 2016. http://hdl.handle.net/11427/20442en_ZA
dc.identifier.citationEdwards, G. 2016. Investigation of operating parameters in a vertical stirred mill. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Edwards, Garren Chad AB - Due to the depletion of coarser grained ores, more mineralogically complex ores are being treated. These complex ores usually have finer grained valuable minerals. Liberation of these finer grained valuable minerals lies in grinding finer. Grinding to these fine sizes is energy intensive and using standard ball mills are energy inefficient at these sizes (P80 < 75μm). Therefore, stirred mills are becoming increasingly prevalent in the mineral processing industry. In order to optimize these mills, the effects and mechanisms of the significant variables need to be understood. This project investigated operating parameters against performance in a laboratory scale vertical stirred mill (Deswik mill), in an ultrafine grinding (UFG) application of MG2 reef in the bushveld igneous complex. The operating variables that were investigated are stirrer speed, solids concentration, media size and media filling. The Kwade stress energy model was tested on the grinding results. The grinding performance was quantified in two ways, i.e. grinding efficiency and grinding rate. The grinding performance for this study was also investigated through a statistical analysis. The experiments was designed using a face centred central composite design (FCCD) and the results was statistically analysed using a design of experiments (DOE) software. DA - 2016 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2016 T1 - Investigation of operating parameters in a vertical stirred mill TI - Investigation of operating parameters in a vertical stirred mill UR - http://hdl.handle.net/11427/20442 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/20442
dc.identifier.vancouvercitationEdwards GC. Investigation of operating parameters in a vertical stirred mill. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Minerals Research, 2016 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/20442en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Minerals Researchen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMinerals Researchen_ZA
dc.titleInvestigation of operating parameters in a vertical stirred millen_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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