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Previous issue date: 2007-08-17 / Companies involved in kaolin mining and treatment represent an important area of industrial development in Brazil, significantly contribution to the worldwide
production of such mineral. As a result, large volumes of kaolin residue are constantly generated and abandoned in the environment, negatively contributing to its
preservation. In this scenario, the objective of the present study was to characterize the residue generated from kaolin mining as well as to assess its potential use as raw material for the production of ceramic tiles. Ceramic mixtures were prepared from raw
materials characterized by X-ray fluorescence, X-ray diffraction, particle size analysis and thermal analysis. Three compositions were prepared using kaolin residue contents of 10%, 20% and 30%. Samples were uniaxially pressed, fired at 1200?C and characterized aiming at establishing their mineralogical composition, water absorption, apparent porosity, specific mass, linear retraction and modulus of rupture. The results
showed that the residue basically consisted of kaolinite and successfully replaced raw kaolin in the preparation of ceramic title formulations without significantly affecting the
properties of the fired material / As ind?strias de minera??o e beneficiamento de caulim s?o um importante segmento econ?mico do pa?s, com uma produ??o bastante significativa no cen?rio
internacional. Em fun??o disso, a produ??o de res?duos ? muito grande, poluindo e agredindo o meio ambiente. Assim, esse trabalho tem por objetivo a caracteriza??o do
res?duo do beneficiamento do caulim e a avalia??o de sua aplicabilidade como mat?riaprima alternativa na produ??o de cer?mica de revestimento. As mat?rias-primas
utilizadas neste trabalho foram caracterizadas por t?cnicas de: fluoresc?ncia de raios X; difra??o de raios X; analise granulom?trica; an?lise termogravim?trica e an?lise termodiferencial. Foram formuladas tr? s composi??es contendo o res?duo de caulim, em
propor??es de 10%, 20%, e 30%. Foram confeccionados corpos-de-prova por prensagem e suas massas foram queimadas a 1200?C e caracterizadas qu?mica e
mineralogicamente com o objetivo de identificar suas composi??es, seus elementos e suas fases. Estes corpos-de-prova foram avaliados quanto ? absor??o de ?gua,
porosidade aparente, massa espec?fica aparente, retra??o linear, difra??o de raios X e o m?dulo de ruptura ? flex?o. Pode-se concluir que o res?duo de caulim ? constitu?do basicamente por caulinita, e que a incorpora??o nas propor??es estudadas teve
resultados altamente satisfat?rios nas formula??es, para a produ??o de cer?micas de revestimento
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15551 |
| Date | 17 August 2007 |
| Creators | Vieira, Jo?o Dantas Paiva |
| Contributors | CPF:15724520800, http://lattes.cnpq.br/0022988322449627, Dutra, Ricardo Peixoto Suassuna, CPF:91875838449, http://lattes.cnpq.br/0075804072604913, Paskocimas, Carlos Alberto, CPF:06296687877, http://lattes.cnpq.br/2365059843175411, Harima, Eiji, CPF:36226874104, http://lattes.cnpq.br/6151089786366987, Nascimento, Rubens Maribondo do, Martinelli, Ant?nio Eduardo |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia Mec?nica, UFRN, BR, Tecnologia de Materiais; Projetos Mec?nicos; Termoci?ncias |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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