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Development of a fine coal beneficiation circuit for the Twistdraai Colliery
Bibliography: p. 167-178.
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Chemical Engineering
2016
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| _version_ | 1867614265731448832 |
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| access_status_str | Open Access |
| author | Bunt, John Reginald |
| author2 | Franzidis, Jean-Paul |
| author_browse | Bunt, John Reginald Franzidis, Jean-Paul |
| author_facet | Franzidis, Jean-Paul Bunt, John Reginald |
| author_sort | Bunt, John Reginald |
| collection | Thesis |
| description | Bibliography: p. 167-178. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/20196 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:49:18.182Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Chemical Engineering |
| publisherStr | Department of Chemical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/20196 Development of a fine coal beneficiation circuit for the Twistdraai Colliery Bunt, John Reginald Franzidis, Jean-Paul Harris, Martin Chemical Engineering Bibliography: p. 167-178. The principal aim of this thesis was to develop a fine coal beneficiation circuit for the Twistdraai Colliery capable of achieving.a saleable 10.0% ash (28 MJ/kg CV) product. Gravity circuit testing involved a comparative study of a conventional double-stage Spiral circuit and a Stokes upward-current washer when treating Twistdraai <850J.1m x 106J.1m fine coal. In addition, froth flotation technologies, in the form of the Microcel column and the Jameson cell were also tested in order to ascertain whether they can be suitably applied · to the Twistdraai naturally fine coal to produce a 10.0% ash steam coal export product. In this investigation, the Twistdraai fine coal surface was characterised by size as well as by density. Functional group determination included the measurement of the coals hydroxyl, carboxylic and total acid groups, since these exert the most important influence on the properties of the coal surface. These are supported by contact angle measurements, petrographic analysis and washability measurements in orde:r to determine the oil wettability of the coal fractions prior to flotation testing. The results described and discussed in this thesis show that it was possible to recover the desired quality of product by employing split-stream processing of the (850J.1m x 0) Twistdraai fine coal circuit feed. This was achieved by application of both gravity concentration and froth flotation technologies treating specific particle size ranges. 2016-07-04T08:43:32Z 2016-07-04T08:43:32Z 1997 Master Thesis Masters MSc http://hdl.handle.net/11427/20196 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Chemical Engineering Bunt, John Reginald Development of a fine coal beneficiation circuit for the Twistdraai Colliery |
| thesis_degree_str | Master's |
| title | Development of a fine coal beneficiation circuit for the Twistdraai Colliery |
| title_full | Development of a fine coal beneficiation circuit for the Twistdraai Colliery |
| title_fullStr | Development of a fine coal beneficiation circuit for the Twistdraai Colliery |
| title_full_unstemmed | Development of a fine coal beneficiation circuit for the Twistdraai Colliery |
| title_short | Development of a fine coal beneficiation circuit for the Twistdraai Colliery |
| title_sort | development of a fine coal beneficiation circuit for the twistdraai colliery |
| topic | Chemical Engineering |
| url | http://hdl.handle.net/11427/20196 |
| work_keys_str_mv | AT buntjohnreginald developmentofafinecoalbeneficiationcircuitforthetwistdraaicolliery |