Investigating the effect of frother type on froth structure, froth recovery and entrainment

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dc.contributor.advisorMcFadzean, Belindaen_ZA
dc.contributor.advisorWiese, Jennyen_ZA
dc.contributor.authorMarozva, Tafadzwaen_ZA
dc.date.accessioned2015-08-15T05:30:51Z
dc.date.available2015-08-15T05:30:51Z
dc.date.issued2015en_ZA
dc.description.abstractMineral processing involves liberation and beneficiation operations. Several beneficiation processes exist and one such important process is froth flotation. The flotation process involves the transportation of valuable minerals of a hydrophobic nature into the froth and to the concentrate launder. This hydrophobicity may be natural or imparted by a collector. Froth structure is significant in determining the froth stability which has an effect on the grade and recovery of valuable minerals. The froth structure is dependent on amongst other factors the type of frothers used during the separation process. As a result, frother type and concentration can be used to manipulate the froth recovery and grade of valuable mineral recovered. Upper Group 2 (UG2) ore contains chromite minerals which are naturally hydrophilic. The chromite minerals are usually recovered in the concentrate mainly due to entrainment. This lowers the grade of valuable minerals recovered and poses detrimental effects to downstream operations. Thus, the froth structure plays an important role in the flotation performance of UG2 ore. This project was aimed at investigating the effect of chain length and functional group of different frothers on the froth stability, froth recovery and entrainment. Froth recovery, entrainment, solids and water recovery, as well as metallurgical recovery, were measured in a laboratory scale continuous column flotation cell. Froth stability was measured in a froth stability column, which is a non-overflowing column in which froth rise rate and equilibrium height were measured. A series of increasing molecular weight polyglycol and alcohol frothers, and their blends, were used to investigate the effect of frother type on froth structure.en_ZA
dc.identifier.apacitationMarozva, T. (2015). <i>Investigating the effect of frother type on froth structure, froth recovery and entrainment</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering. Retrieved from http://hdl.handle.net/11427/13753en_ZA
dc.identifier.chicagocitationMarozva, Tafadzwa. <i>"Investigating the effect of frother type on froth structure, froth recovery and entrainment."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2015. http://hdl.handle.net/11427/13753en_ZA
dc.identifier.citationMarozva, T. 2015. Investigating the effect of frother type on froth structure, froth recovery and entrainment. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Marozva, Tafadzwa AB - Mineral processing involves liberation and beneficiation operations. Several beneficiation processes exist and one such important process is froth flotation. The flotation process involves the transportation of valuable minerals of a hydrophobic nature into the froth and to the concentrate launder. This hydrophobicity may be natural or imparted by a collector. Froth structure is significant in determining the froth stability which has an effect on the grade and recovery of valuable minerals. The froth structure is dependent on amongst other factors the type of frothers used during the separation process. As a result, frother type and concentration can be used to manipulate the froth recovery and grade of valuable mineral recovered. Upper Group 2 (UG2) ore contains chromite minerals which are naturally hydrophilic. The chromite minerals are usually recovered in the concentrate mainly due to entrainment. This lowers the grade of valuable minerals recovered and poses detrimental effects to downstream operations. Thus, the froth structure plays an important role in the flotation performance of UG2 ore. This project was aimed at investigating the effect of chain length and functional group of different frothers on the froth stability, froth recovery and entrainment. Froth recovery, entrainment, solids and water recovery, as well as metallurgical recovery, were measured in a laboratory scale continuous column flotation cell. Froth stability was measured in a froth stability column, which is a non-overflowing column in which froth rise rate and equilibrium height were measured. A series of increasing molecular weight polyglycol and alcohol frothers, and their blends, were used to investigate the effect of frother type on froth structure. DA - 2015 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2015 T1 - Investigating the effect of frother type on froth structure, froth recovery and entrainment TI - Investigating the effect of frother type on froth structure, froth recovery and entrainment UR - http://hdl.handle.net/11427/13753 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/13753
dc.identifier.vancouvercitationMarozva T. Investigating the effect of frother type on froth structure, froth recovery and entrainment. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 2015 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/13753en_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.titleInvestigating the effect of frother type on froth structure, froth recovery and entrainmenten_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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