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The batch and continuous bacterial leaching kinetics of a refractory gold-bearing pyrite concentrate
Bibliography: pages 125-136.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Chemical Engineering
2016
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| _version_ | 1867614010690502656 |
|---|---|
| access_status_str | Open Access |
| author | Chapman, J T |
| author2 | Hansford, Geoffrey Spearing |
| author_browse | Chapman, J T Hansford, Geoffrey Spearing |
| author_facet | Hansford, Geoffrey Spearing Chapman, J T |
| author_sort | Chapman, J T |
| collection | Thesis |
| description | Bibliography: pages 125-136. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/17706 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:45:14.956Z |
| 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:11427/17706 The batch and continuous bacterial leaching kinetics of a refractory gold-bearing pyrite concentrate Chapman, J T Hansford, Geoffrey Spearing Chemical Engineering Leaching Bibliography: pages 125-136. The recent focus on bacterial leaching as a preoxidation step in the treatment of refractory gold bearing sulphide ores and concentrates, has created the need for kinetic models to adequately describe bacterial leaching reactor performance. This work is a kinetic study of the bacterial leaching of a refractory gold bearing, pyrite concentrate. The study includes the presentation of two mechanistically based, the shrinking particle and propagating pore (Hansford and Drossou, 1986), batch reactor kinetic models. These models are derived for single stage continuous reactor description. In addition, the empirical logistic growth model (Pinches et al., 1987) is presented for both batch and continuous reactor description. The models are correlated with the experimental data. Three narrow size fractions of the pyrite concentrate were subjected to batch and continuous bacterial oxidation, using a Thiobacillus ferrooxidans culture. Time profile data of the pyrite oxidation were obtained for the batch reactor study. Similarly, retention time profile data of pyrite oxidation was obtained for the single stage continuous reactor. The .gold extraction as a function of sulphide oxidation as well as fraction arsenic leached, was established. 2016-03-14T07:16:28Z 2016-03-14T07:16:28Z 1989 Master Thesis Masters MSc http://hdl.handle.net/11427/17706 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Chemical Engineering Leaching Chapman, J T The batch and continuous bacterial leaching kinetics of a refractory gold-bearing pyrite concentrate |
| thesis_degree_str | Master's |
| title | The batch and continuous bacterial leaching kinetics of a refractory gold-bearing pyrite concentrate |
| title_full | The batch and continuous bacterial leaching kinetics of a refractory gold-bearing pyrite concentrate |
| title_fullStr | The batch and continuous bacterial leaching kinetics of a refractory gold-bearing pyrite concentrate |
| title_full_unstemmed | The batch and continuous bacterial leaching kinetics of a refractory gold-bearing pyrite concentrate |
| title_short | The batch and continuous bacterial leaching kinetics of a refractory gold-bearing pyrite concentrate |
| title_sort | batch and continuous bacterial leaching kinetics of a refractory gold bearing pyrite concentrate |
| topic | Chemical Engineering Leaching |
| url | http://hdl.handle.net/11427/17706 |
| work_keys_str_mv | AT chapmanjt thebatchandcontinuousbacterialleachingkineticsofarefractorygoldbearingpyriteconcentrate AT chapmanjt batchandcontinuousbacterialleachingkineticsofarefractorygoldbearingpyriteconcentrate |