Developing a framework for the design of the milling and rougher circuits for a platinum-bearing UG2 ore

Simple item page
dc.contributor.advisorHarris, Martinen_ZA
dc.contributor.authorSteyn, Johannes Jakobusen_ZA
dc.date.accessioned2015-05-26T14:14:11Z
dc.date.available2015-05-26T14:14:11Z
dc.date.issued2012en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractIn the western limb of the Bushveld Igneous Complex, platinum is mined predominantly from two reefs – Merensky and UG2. Most of the platinum group minerals (PGM’s) in Merensky ore are associated with base metal sulphides (BMS), and thus Merensky concentrators will usually resemble simple BMS circuits. However, the mineralogy of UG2 ore is more complicated, and thus UG2 circuits are also more complex. The UG2 reef is a chromitite layer in the critical zone of the Bushveld Igneous Complex, which results in high chromite content. Chromite causes significant complications in the downstream smelter process, and therefore chromite constraints are imposed on UG2 concentrators. A further aspect complicating the treatment of UG2 ore is that PGM’s are not only associated with BMS, but ultra-fine PGM’s are also locked in gangue minerals. This affects the milling and flotation characteristics of the circuits, as it is not possible to efficiently target the liberation and recovery of relatively large BMS and ultra-fine PGM’s in the same circuit. As a result UG2 circuits have evolved to deal with these issues in a number of ways. This thesis focuses on the design of milling and flotation circuits to optimise the recovery of coarse BMS (with associated PGM’s) and ultra-fine PGM’s contained in associated siliceous gangue minerals. In order to achieve this, UG2 circuits usually feature more than one milling and flotation stage.en_ZA
dc.identifier.apacitationSteyn, J. J. (2012). <i>Developing a framework for the design of the milling and rougher circuits for a platinum-bearing UG2 ore</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering. Retrieved from http://hdl.handle.net/11427/12868en_ZA
dc.identifier.chicagocitationSteyn, Johannes Jakobus. <i>"Developing a framework for the design of the milling and rougher circuits for a platinum-bearing UG2 ore."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2012. http://hdl.handle.net/11427/12868en_ZA
dc.identifier.citationSteyn, J. 2012. Developing a framework for the design of the milling and rougher circuits for a platinum-bearing UG2 ore. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Steyn, Johannes Jakobus AB - In the western limb of the Bushveld Igneous Complex, platinum is mined predominantly from two reefs – Merensky and UG2. Most of the platinum group minerals (PGM’s) in Merensky ore are associated with base metal sulphides (BMS), and thus Merensky concentrators will usually resemble simple BMS circuits. However, the mineralogy of UG2 ore is more complicated, and thus UG2 circuits are also more complex. The UG2 reef is a chromitite layer in the critical zone of the Bushveld Igneous Complex, which results in high chromite content. Chromite causes significant complications in the downstream smelter process, and therefore chromite constraints are imposed on UG2 concentrators. A further aspect complicating the treatment of UG2 ore is that PGM’s are not only associated with BMS, but ultra-fine PGM’s are also locked in gangue minerals. This affects the milling and flotation characteristics of the circuits, as it is not possible to efficiently target the liberation and recovery of relatively large BMS and ultra-fine PGM’s in the same circuit. As a result UG2 circuits have evolved to deal with these issues in a number of ways. This thesis focuses on the design of milling and flotation circuits to optimise the recovery of coarse BMS (with associated PGM’s) and ultra-fine PGM’s contained in associated siliceous gangue minerals. In order to achieve this, UG2 circuits usually feature more than one milling and flotation stage. DA - 2012 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2012 T1 - Developing a framework for the design of the milling and rougher circuits for a platinum-bearing UG2 ore TI - Developing a framework for the design of the milling and rougher circuits for a platinum-bearing UG2 ore UR - http://hdl.handle.net/11427/12868 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/12868
dc.identifier.vancouvercitationSteyn JJ. Developing a framework for the design of the milling and rougher circuits for a platinum-bearing UG2 ore. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2012 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/12868en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Chemical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherChemical Engineeringen_ZA
dc.titleDeveloping a framework for the design of the milling and rougher circuits for a platinum-bearing UG2 oreen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
thesis_ebe_2012_steyn_jj.pdf
Size:
2.01 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
PhD / Doctoral