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A study of charge motion in rotary mills, with particular reference to the grinding action
Includes bibliographical references.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Mechanical Engineering
2014
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| _version_ | 1867613140599963648 |
|---|---|
| access_status_str | Open Access |
| author | Powell, Malcolm S |
| author2 | Nurick, Gerald N |
| author_browse | Nurick, Gerald N Powell, Malcolm S |
| author_facet | Nurick, Gerald N Powell, Malcolm S |
| author_sort | Powell, Malcolm S |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/9657 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:31:24.573Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Mechanical Engineering |
| publisherStr | Department of Mechanical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/9657 A study of charge motion in rotary mills, with particular reference to the grinding action Powell, Malcolm S Nurick, Gerald N Mechanical Engineering Includes bibliographical references. 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. 2014-11-15T19:40:40Z 2014-11-15T19:40:40Z 1993 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/9657 eng application/pdf Department of Mechanical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Mechanical Engineering Powell, Malcolm S A study of charge motion in rotary mills, with particular reference to the grinding action |
| thesis_degree_str | Doctoral |
| title | A study of charge motion in rotary mills, with particular reference to the grinding action |
| title_full | A study of charge motion in rotary mills, with particular reference to the grinding action |
| title_fullStr | A study of charge motion in rotary mills, with particular reference to the grinding action |
| title_full_unstemmed | A study of charge motion in rotary mills, with particular reference to the grinding action |
| title_short | A study of charge motion in rotary mills, with particular reference to the grinding action |
| title_sort | study of charge motion in rotary mills with particular reference to the grinding action |
| topic | Mechanical Engineering |
| url | http://hdl.handle.net/11427/9657 |
| work_keys_str_mv | AT powellmalcolms astudyofchargemotioninrotarymillswithparticularreferencetothegrindingaction AT powellmalcolms studyofchargemotioninrotarymillswithparticularreferencetothegrindingaction |