A study of charge motion in rotary mills, with particular reference to the grinding action

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dc.contributor.advisorNurick, Gerald Nen_ZA
dc.contributor.authorPowell, Malcolm Sen_ZA
dc.date.accessioned2014-11-15T19:40:40Z
dc.date.available2014-11-15T19:40:40Z
dc.date.issued1993en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractThe objective of this study was to develop a fundamental understanding of the action of the grinding charge in a mill, and to then correlate this with the metallurgical performance of different mill-liners. To achieve these overall objectives it was first necessary to develop suitable experimental techniques, and the development of these techniques became a large part of the objective of the study. The motion of balls deep within the charge of a rotary grinding mill was investigated. Novel investigative techniques were used to track the motion of the balls, including X-ray filming at 50 frames per second of both the front and side views of a transparent mill, and gamma-camera filming of a radioactive ball. Analysis of the trajectories of the balls revealed several phenomena in the milling action that have not been reported until now. It was observed that the paths of the balls are smooth, that they spiral in and out of the charge, and that the grinding does not take place by rotary nipping of the ore between the balls.en_ZA
dc.identifier.apacitationPowell, M. S. (1993). <i>A study of charge motion in rotary mills, with particular reference to the grinding action</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering. Retrieved from http://hdl.handle.net/11427/9657en_ZA
dc.identifier.chicagocitationPowell, Malcolm S. <i>"A study of charge motion in rotary mills, with particular reference to the grinding action."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 1993. http://hdl.handle.net/11427/9657en_ZA
dc.identifier.citationPowell, M. 1993. A study of charge motion in rotary mills, with particular reference to the grinding action. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Powell, Malcolm S AB - The objective of this study was to develop a fundamental understanding of the action of the grinding charge in a mill, and to then correlate this with the metallurgical performance of different mill-liners. To achieve these overall objectives it was first necessary to develop suitable experimental techniques, and the development of these techniques became a large part of the objective of the study. The motion of balls deep within the charge of a rotary grinding mill was investigated. Novel investigative techniques were used to track the motion of the balls, including X-ray filming at 50 frames per second of both the front and side views of a transparent mill, and gamma-camera filming of a radioactive ball. Analysis of the trajectories of the balls revealed several phenomena in the milling action that have not been reported until now. It was observed that the paths of the balls are smooth, that they spiral in and out of the charge, and that the grinding does not take place by rotary nipping of the ore between the balls. DA - 1993 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1993 T1 - A study of charge motion in rotary mills, with particular reference to the grinding action TI - A study of charge motion in rotary mills, with particular reference to the grinding action UR - http://hdl.handle.net/11427/9657 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/9657
dc.identifier.vancouvercitationPowell MS. A study of charge motion in rotary mills, with particular reference to the grinding action. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 1993 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/9657en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Mechanical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMechanical Engineeringen_ZA
dc.titleA study of charge motion in rotary mills, with particular reference to the grinding actionen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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