Phase distribution identification in the column leaching of low grade ores using MRI
| dc.contributor.author | Fagan, Marijke A | |
| dc.contributor.author | Sederman, Andrew J | |
| dc.contributor.author | Harrison, Sue | |
| dc.contributor.author | Johns, Michael L | |
| dc.date.accessioned | 2015-04-29T09:37:52Z | |
| dc.date.available | 2015-04-29T09:37:52Z | |
| dc.date.issued | 2013 | |
| dc.description.abstract | Heap bioleaching is gaining importance as an approach for the recovery of valuable metals (e.g. Cu2+) from low grade ores. In this process iron and/or sulfur oxidising microorganisms are used to aid the oxidation of base metal sulfides in the ore, thereby liberating the metal ions into solution. Leach performance is strongly influenced by the contacting of the leach solution and the ore particles. In order to better understand the distribution of the leaching solution on the pore scale in these heaps, Magnetic Resonance Imaging (MRI) was used to acquire images non-invasively of a section of an irrigated ore bed. This was made possible by the use of specialist MRI acquisition sequences suited to the magnetically heterogeneous environment as presented by the ore material. From the images we were able to determine the pore-occupancy of the liquid and gas phases and to provide novel measurement of the interfacial area between air, leach solution and ore. | en_ZA |
| dc.identifier.apacitation | Fagan, M. A., Sederman, A. J., Harrison, S., & Johns, M. L. (2013). Phase distribution identification in the column leaching of low grade ores using MRI. <i>Minerals Engineering</i>, http://hdl.handle.net/11427/12700 | en_ZA |
| dc.identifier.chicagocitation | Fagan, Marijke A, Andrew J Sederman, Sue Harrison, and Michael L Johns "Phase distribution identification in the column leaching of low grade ores using MRI." <i>Minerals Engineering</i> (2013) http://hdl.handle.net/11427/12700 | en_ZA |
| dc.identifier.citation | Fagan, MA; Sederman, AJ; Harrison, STL; Johns, ML. 2013. Phase distribution identification in the column leaching of low grade ores using MRI. Minerals Engineering, Volume 48 (2013) 94-99. http://dx.doi.org/10.1016/j.mineng.2012.10.005 | en_ZA |
| dc.identifier.issn | 08926875 | en_ZA |
| dc.identifier.ris | TY - Journal Article AU - Fagan, Marijke A AU - Sederman, Andrew J AU - Harrison, Sue AU - Johns, Michael L AB - Heap bioleaching is gaining importance as an approach for the recovery of valuable metals (e.g. Cu2+) from low grade ores. In this process iron and/or sulfur oxidising microorganisms are used to aid the oxidation of base metal sulfides in the ore, thereby liberating the metal ions into solution. Leach performance is strongly influenced by the contacting of the leach solution and the ore particles. In order to better understand the distribution of the leaching solution on the pore scale in these heaps, Magnetic Resonance Imaging (MRI) was used to acquire images non-invasively of a section of an irrigated ore bed. This was made possible by the use of specialist MRI acquisition sequences suited to the magnetically heterogeneous environment as presented by the ore material. From the images we were able to determine the pore-occupancy of the liquid and gas phases and to provide novel measurement of the interfacial area between air, leach solution and ore. DA - 2013 DB - OpenUCT DO - 10.1016/j.mineng.2012.10.005 DP - University of Cape Town J1 - Minerals Engineering LK - https://open.uct.ac.za PB - University of Cape Town PY - 2013 SM - 08926875 T1 - Phase distribution identification in the column leaching of low grade ores using MRI TI - Phase distribution identification in the column leaching of low grade ores using MRI UR - http://hdl.handle.net/11427/12700 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/12700 | |
| dc.identifier.uri | http://dx.doi.org/10.1016/j.mineng.2012.10.005 | |
| dc.identifier.vancouvercitation | Fagan MA, Sederman AJ, Harrison S, Johns ML. Phase distribution identification in the column leaching of low grade ores using MRI. Minerals Engineering. 2013; http://hdl.handle.net/11427/12700. | en_ZA |
| dc.language | eng | en_ZA |
| dc.publisher | Elsevier | en_ZA |
| dc.publisher.department | Centre for Bioprocess Engineering Research | |
| dc.publisher.faculty | Faculty of Engineering and the Built Environment | |
| dc.publisher.institution | University of Cape Town | |
| dc.rights | Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | en_ZA |
| dc.source | Minerals Engineering | en_ZA |
| dc.source.uri | http://www.journals.elsevier.com/minerals-engineering/ | |
| dc.title | Phase distribution identification in the column leaching of low grade ores using MRI | en_ZA |
| dc.type | Journal Article | en_ZA |
| uct.subject.keywords | MRI | en_ZA |
| uct.subject.keywords | Heap leaching | en_ZA |
| uct.subject.keywords | Hydrometallurgy | en_ZA |
| uct.subject.keywords | Interfacial area | en_ZA |
| uct.subject.keywords | Process optimisation | en_ZA |
| uct.type.filetype | Text | |
| uct.type.filetype | Image | |
| uct.type.publication | Research | en_ZA |
| uct.type.resource | Article | en_ZA |