Spatial variations in leaching of a low-grade, low-porosity chalcopyrite ore identified using X-ray μCT
| dc.contributor.author | Fagan-Endres, Marijke A | |
| dc.contributor.author | Cilliers, Johannes J | |
| dc.contributor.author | Sederman, Andrew J | |
| dc.contributor.author | Harrison, Susan TL | |
| dc.date.accessioned | 2017-06-28T12:46:21Z | |
| dc.date.available | 2017-06-28T12:46:21Z | |
| dc.date.issued | 2017-05-01 | |
| dc.description.abstract | This study presents an investigation, using 3D X-ray micro computed tomography (μCT), into the effect of sulfide mineral position within an ore particle on leaching efficiency. Three sections of an unsaturated mini-leaching column that had been packed with agglomerated low-grade, low-porosity chalcopyrite ore and leached with an acidified ferric iron solution were imaged at different stages of a 102 day experiment. Image analysis was used to quantify changes in the mineral content and the influence on this of the mineral distance from the ore particle surface, local voidage and radial position within the column. The main factor affecting the mineral recovery was identified to be proximity of the mineral to the ore particle surface, with recovery decreasing with increasing distance from the ore surface. A maximum leaching penetration was observed to exist at 2 mm from the surface, beyond which no recovery was achieved. Higher recoveries at the column wall indicated that preferential flow in this higher voidage had an additional, albeit smaller, impact on leaching efficiency. | en_ZA |
| dc.identifier.apacitation | Fagan-Endres, M. A., Cilliers, J. J., Sederman, A. J., & Harrison, S. T. (2017). Spatial variations in leaching of a low-grade, low-porosity chalcopyrite ore identified using X-ray μCT. <i>Minerals Engineering</i>, http://hdl.handle.net/11427/24662 | en_ZA |
| dc.identifier.chicagocitation | Fagan-Endres, Marijke A, Johannes J Cilliers, Andrew J Sederman, and Susan TL Harrison "Spatial variations in leaching of a low-grade, low-porosity chalcopyrite ore identified using X-ray μCT." <i>Minerals Engineering</i> (2017) http://hdl.handle.net/11427/24662 | en_ZA |
| dc.identifier.citation | Fagan-Endres, M.A., Cilliers, J.J., Sederman, A.J. and Harrison, S.T.L. (2017) Spatial variations in leaching of a low-grade, low-porosity chalcopyrite ore identified using X-ray μCT. Minerals Engineering, 105, 63-68. | en_ZA |
| dc.identifier.issn | http://dx.doi.org/10.1016/j.mineng.2017.01.010 | en_ZA |
| dc.identifier.ris | TY - Journal Article AU - Fagan-Endres, Marijke A AU - Cilliers, Johannes J AU - Sederman, Andrew J AU - Harrison, Susan TL AB - This study presents an investigation, using 3D X-ray micro computed tomography (μCT), into the effect of sulfide mineral position within an ore particle on leaching efficiency. Three sections of an unsaturated mini-leaching column that had been packed with agglomerated low-grade, low-porosity chalcopyrite ore and leached with an acidified ferric iron solution were imaged at different stages of a 102 day experiment. Image analysis was used to quantify changes in the mineral content and the influence on this of the mineral distance from the ore particle surface, local voidage and radial position within the column. The main factor affecting the mineral recovery was identified to be proximity of the mineral to the ore particle surface, with recovery decreasing with increasing distance from the ore surface. A maximum leaching penetration was observed to exist at 2 mm from the surface, beyond which no recovery was achieved. Higher recoveries at the column wall indicated that preferential flow in this higher voidage had an additional, albeit smaller, impact on leaching efficiency. DA - 2017-05-01 DB - OpenUCT DP - University of Cape Town J1 - Minerals Engineering LK - https://open.uct.ac.za PB - University of Cape Town PY - 2017 SM - http://dx.doi.org/10.1016/j.mineng.2017.01.010 T1 - Spatial variations in leaching of a low-grade, low-porosity chalcopyrite ore identified using X-ray μCT TI - Spatial variations in leaching of a low-grade, low-porosity chalcopyrite ore identified using X-ray μCT UR - http://hdl.handle.net/11427/24662 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/24662 | |
| dc.identifier.uri | https://doi.org/10.1016/j.mineng.2017.01.010 | |
| dc.identifier.vancouvercitation | Fagan-Endres MA, Cilliers JJ, Sederman AJ, Harrison ST. Spatial variations in leaching of a low-grade, low-porosity chalcopyrite ore identified using X-ray μCT. Minerals Engineering. 2017; http://hdl.handle.net/11427/24662. | 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.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.source | Minerals Engineering | en_ZA |
| dc.source.uri | http://www.sciencedirect.com/science/journal/08926875 | |
| dc.title | Spatial variations in leaching of a low-grade, low-porosity chalcopyrite ore identified using X-ray μCT | en_ZA |
| dc.type | Journal Article | en_ZA |
| uct.subject.keywords | Leaching | en_ZA |
| uct.subject.keywords | X-ray μCT | en_ZA |
| uct.subject.keywords | Surface leaching | en_ZA |
| uct.subject.keywords | Hydrology | en_ZA |
| uct.subject.keywords | Chalcopyrite | en_ZA |
| uct.type.filetype | Text | |
| uct.type.filetype | Image | |
| uct.type.publication | Research | en_ZA |
| uct.type.resource | Post-print | en_ZA |