Assessing vibrating viscometers in slurries

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dc.contributor.advisorBesseling, Johann L Nen_ZA
dc.contributor.authorRachman, Yichal Aryehen_ZA
dc.date.accessioned2016-03-21T19:03:14Z
dc.date.available2016-03-21T19:03:14Z
dc.date.issued1977en_ZA
dc.descriptionBibliography: pages 49-50.en_ZA
dc.description.abstractA number of vibrating transducers for viscosity measurement described in the literature have been evaluated, with a view to developing an instrument for measuring gold-mine slurries. Appropriate electronic measuring methods are discussed, and related theory using a simple mathematical model is derived, and verified experimentally. A low frequency vibrating transducer is described which is capable of measuring apparent viscosities of slurries. Measurements made on Newtonian liquids at four different frequencies using the same transducer agree to ± 2%, and correlate closely with measurements made using a Redwood orifice viscometer. In order to determine the accuracy of the transducer for slurries, comparative measurements at four frequencies are used to obviate the need for a reference instrument. For a dilute (Newtonian) slurry, these measurements agree to ± 10%, but similar measurements on more concentrated (non-Newtonian) slurries show marked divergence of the curves at high frequencies. It is suspected that this behaviour is a property of the slurries, related in some way to their observed non-Newtonian behaviour. These results are of a qualitative nature, but point to the possible usefulness of the instrument for slurry measurement.en_ZA
dc.identifier.apacitationRachman, Y. A. (1977). <i>Assessing vibrating viscometers in slurries</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/18016en_ZA
dc.identifier.chicagocitationRachman, Yichal Aryeh. <i>"Assessing vibrating viscometers in slurries."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1977. http://hdl.handle.net/11427/18016en_ZA
dc.identifier.citationRachman, Y. 1977. Assessing vibrating viscometers in slurries. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Rachman, Yichal Aryeh AB - A number of vibrating transducers for viscosity measurement described in the literature have been evaluated, with a view to developing an instrument for measuring gold-mine slurries. Appropriate electronic measuring methods are discussed, and related theory using a simple mathematical model is derived, and verified experimentally. A low frequency vibrating transducer is described which is capable of measuring apparent viscosities of slurries. Measurements made on Newtonian liquids at four different frequencies using the same transducer agree to ± 2%, and correlate closely with measurements made using a Redwood orifice viscometer. In order to determine the accuracy of the transducer for slurries, comparative measurements at four frequencies are used to obviate the need for a reference instrument. For a dilute (Newtonian) slurry, these measurements agree to ± 10%, but similar measurements on more concentrated (non-Newtonian) slurries show marked divergence of the curves at high frequencies. It is suspected that this behaviour is a property of the slurries, related in some way to their observed non-Newtonian behaviour. These results are of a qualitative nature, but point to the possible usefulness of the instrument for slurry measurement. DA - 1977 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1977 T1 - Assessing vibrating viscometers in slurries TI - Assessing vibrating viscometers in slurries UR - http://hdl.handle.net/11427/18016 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/18016
dc.identifier.vancouvercitationRachman YA. Assessing vibrating viscometers in slurries. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1977 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18016en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Electrical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherElectrical Engineeringen_ZA
dc.titleAssessing vibrating viscometers in slurriesen_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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