Development of a fine coal beneficiation circuit for the Twistdraai Colliery

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dc.contributor.advisorFranzidis, Jean-Paulen_ZA
dc.contributor.advisorHarris, Martinen_ZA
dc.contributor.authorBunt, John Reginalden_ZA
dc.date.accessioned2016-07-04T08:43:32Z
dc.date.available2016-07-04T08:43:32Z
dc.date.issued1997en_ZA
dc.descriptionBibliography: p. 167-178.en_ZA
dc.description.abstractThe principal aim of this thesis was to develop a fine coal beneficiation circuit for the Twistdraai Colliery capable of achieving.a saleable 10.0% ash (28 MJ/kg CV) product. Gravity circuit testing involved a comparative study of a conventional double-stage Spiral circuit and a Stokes upward-current washer when treating Twistdraai <850J.1m x 106J.1m fine coal. In addition, froth flotation technologies, in the form of the Microcel column and the Jameson cell were also tested in order to ascertain whether they can be suitably applied · to the Twistdraai naturally fine coal to produce a 10.0% ash steam coal export product. In this investigation, the Twistdraai fine coal surface was characterised by size as well as by density. Functional group determination included the measurement of the coals hydroxyl, carboxylic and total acid groups, since these exert the most important influence on the properties of the coal surface. These are supported by contact angle measurements, petrographic analysis and washability measurements in orde:r to determine the oil wettability of the coal fractions prior to flotation testing. The results described and discussed in this thesis show that it was possible to recover the desired quality of product by employing split-stream processing of the (850J.1m x 0) Twistdraai fine coal circuit feed. This was achieved by application of both gravity concentration and froth flotation technologies treating specific particle size ranges.en_ZA
dc.identifier.apacitationBunt, J. R. (1997). <i>Development of a fine coal beneficiation circuit for the Twistdraai Colliery</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering. Retrieved from http://hdl.handle.net/11427/20196en_ZA
dc.identifier.chicagocitationBunt, John Reginald. <i>"Development of a fine coal beneficiation circuit for the Twistdraai Colliery."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 1997. http://hdl.handle.net/11427/20196en_ZA
dc.identifier.citationBunt, J. 1997. Development of a fine coal beneficiation circuit for the Twistdraai Colliery. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Bunt, John Reginald AB - The principal aim of this thesis was to develop a fine coal beneficiation circuit for the Twistdraai Colliery capable of achieving.a saleable 10.0% ash (28 MJ/kg CV) product. Gravity circuit testing involved a comparative study of a conventional double-stage Spiral circuit and a Stokes upward-current washer when treating Twistdraai <850J.1m x 106J.1m fine coal. In addition, froth flotation technologies, in the form of the Microcel column and the Jameson cell were also tested in order to ascertain whether they can be suitably applied · to the Twistdraai naturally fine coal to produce a 10.0% ash steam coal export product. In this investigation, the Twistdraai fine coal surface was characterised by size as well as by density. Functional group determination included the measurement of the coals hydroxyl, carboxylic and total acid groups, since these exert the most important influence on the properties of the coal surface. These are supported by contact angle measurements, petrographic analysis and washability measurements in orde:r to determine the oil wettability of the coal fractions prior to flotation testing. The results described and discussed in this thesis show that it was possible to recover the desired quality of product by employing split-stream processing of the (850J.1m x 0) Twistdraai fine coal circuit feed. This was achieved by application of both gravity concentration and froth flotation technologies treating specific particle size ranges. DA - 1997 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1997 T1 - Development of a fine coal beneficiation circuit for the Twistdraai Colliery TI - Development of a fine coal beneficiation circuit for the Twistdraai Colliery UR - http://hdl.handle.net/11427/20196 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/20196
dc.identifier.vancouvercitationBunt JR. Development of a fine coal beneficiation circuit for the Twistdraai Colliery. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Chemical Engineering, 1997 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/20196en_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.titleDevelopment of a fine coal beneficiation circuit for the Twistdraai Collieryen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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