Investigating collector and depressant performance in the flotation of selected iron ores

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dc.contributor.advisorWiese, Jennyen_ZA
dc.contributor.advisorMcFadzean, Belindaen_ZA
dc.contributor.authorMhonde, Ngoni Pepukaien_ZA
dc.date.accessioned2017-01-16T13:48:28Z
dc.date.available2017-01-16T13:48:28Z
dc.date.issued2016en_ZA
dc.description.abstractAs the excessive extraction of high grade iron ore reserves has led to the rapid depletion of these ore bodies, there is a growing need to extract and upgrade low grade iron ores into more economically viable products with an iron content in excess of 50%. The beneficiation of low grade iron ores through the reverse cationic flotation procedure is gradually gaining popularity as a possible processing route of the future for South Africa's iron industry. Reverse cationic flotation employs a reagent suite consisting of an amine compound which functions as a quartz collector in addition to providing the frothing effect in the flotation system, and hydrolysed starch which serves to depress hematite during flotation. The aim of this project was to investigate the effect of using five amine collectors with different molecular structures on the flotation recovery of quartz and the entrainment of hematite in the flotation of a South African iron ore and a Brazilian iron ore. Laboratory batch flotation tests were conducted on both ore samples and the grade and recovery of hematite were recorded. The collectors were characterised through surface tension measurements and pKa value analysis. An attempt at using different polysaccharides as hematite depressants entailed the use of a CMC and a guar gum in batch flotation tests of the Brazilian iron ore.en_ZA
dc.identifier.apacitationMhonde, N. P. (2016). <i>Investigating collector and depressant performance in the flotation of selected iron ores</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Minerals Research. Retrieved from http://hdl.handle.net/11427/22742en_ZA
dc.identifier.chicagocitationMhonde, Ngoni Pepukai. <i>"Investigating collector and depressant performance in the flotation of selected iron ores."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Minerals Research, 2016. http://hdl.handle.net/11427/22742en_ZA
dc.identifier.citationMhonde, N. 2016. Investigating collector and depressant performance in the flotation of selected iron ores. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Mhonde, Ngoni Pepukai AB - As the excessive extraction of high grade iron ore reserves has led to the rapid depletion of these ore bodies, there is a growing need to extract and upgrade low grade iron ores into more economically viable products with an iron content in excess of 50%. The beneficiation of low grade iron ores through the reverse cationic flotation procedure is gradually gaining popularity as a possible processing route of the future for South Africa's iron industry. Reverse cationic flotation employs a reagent suite consisting of an amine compound which functions as a quartz collector in addition to providing the frothing effect in the flotation system, and hydrolysed starch which serves to depress hematite during flotation. The aim of this project was to investigate the effect of using five amine collectors with different molecular structures on the flotation recovery of quartz and the entrainment of hematite in the flotation of a South African iron ore and a Brazilian iron ore. Laboratory batch flotation tests were conducted on both ore samples and the grade and recovery of hematite were recorded. The collectors were characterised through surface tension measurements and pKa value analysis. An attempt at using different polysaccharides as hematite depressants entailed the use of a CMC and a guar gum in batch flotation tests of the Brazilian iron ore. DA - 2016 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2016 T1 - Investigating collector and depressant performance in the flotation of selected iron ores TI - Investigating collector and depressant performance in the flotation of selected iron ores UR - http://hdl.handle.net/11427/22742 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/22742
dc.identifier.vancouvercitationMhonde NP. Investigating collector and depressant performance in the flotation of selected iron ores. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Minerals Research, 2016 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/22742en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Minerals Researchen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherChemical Engineeringen_ZA
dc.subject.otherMinerals Researchen_ZA
dc.titleInvestigating collector and depressant performance in the flotation of selected iron oresen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Eng)en_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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