Ceramic Properties of Pugu Kaolin Clays. Part I: Porosity And Modulus Of Rupture

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dc.contributor.authorAkwilapo, Leonard D.
dc.contributor.authorWiik, Kjell
dc.date.accessioned2016-07-11T14:51:00Z
dc.date.available2016-07-11T14:51:00Z
dc.date.issued2003-11
dc.description.abstractThe utilisation of Pugu kaolin clay as a raw material in porcelain has been tested by laboratory scale experiments. Physical characteristics of the clay have shown it to be of satisfactory quality and comparable to commercial clays found elsewhere. The chemical analysis has indicated the presence of high levels of iron oxide (~ 1.43%) which could adversely affect the translucency of whitewares. The ''as mined'' material could be suitable for ceramics that do not require high brightness specifications, such as stoneware and sanitary ware. The level of this oxide can, however, be reduced by appropriate means to give a relatively cleaner product that could be excellent for other types of whiteware products. Porcelain materials prepared using Pugu kaolin clay have shown to have similar properties as those prepared using other standard kaolin clays. The bulk density and flexural strength of the fired masses increase with firing temperature to a maximum at the soak temperature of 1200 o C. Beyond this soak temperature the flexural strength decreases. The decrease in strength is attributable to bloating which takes place as gasses are expelled from the matrix. Strictly firing procedures should be enforced in order to obtain a porcelain material of required strength.en_US
dc.identifier.citationAkwilapo, L.D. and Wiik, K., 2003. Ceramic properties of Pugu kaolin clays. Part I: Porosity and modulus of rupture. Bulletin of the Chemical Society of Ethiopia, 17(2).en_US
dc.identifier.doi10.4314/bcse.v17i2.61661
dc.identifier.urihttp://hdl.handle.net/20.500.11810/3070
dc.language.isoenen_US
dc.subjectKaolin clayen_US
dc.subjectCeramic propertiesen_US
dc.subjectPorcelain materialsen_US
dc.subjectBulk densityen_US
dc.subjectSinteringen_US
dc.subjectModulus of ruptureen_US
dc.subjectBloatingen_US
dc.titleCeramic Properties of Pugu Kaolin Clays. Part I: Porosity And Modulus Of Ruptureen_US
dc.typeJournal Article, Peer Revieweden_US
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