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Master's Dissertation
DOI
10.11606/D.3.2011.tde-04112011-150732
Document
Author
Full name
Edilene de Souza Conceição
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2011
Supervisor
Committee
Gouvêa, Douglas (President)
Bombard, Antonio José Faria
Menegazzo, Ana Paula Margarido
Title in Portuguese
Influência da distribuição granulométrica no empacotamento de matérias-primas na formulação de porcelânicos.
Keywords in Portuguese
Empacotamento
Granulometria
Porcelana
Porcelanato
Abstract in Portuguese
Materiais complexos como porcelanas e porcelanatos tem suas propriedades maximizadas quando atingem altas densidades finais após a sinterização. Contudo, a sua formulação contém no mínimo quatro matérias- primas diferentes, sendo o caulim a maior parte, mas também contendo quartzo e feldspatos. A granulometria final da mistura é controlada por uma única etapa de moagem de todos os materiais misturados. O objetivo deste trabalho foi obter combinações de diferentes granulometrias de ortoclásio, albita e quartzo com uma única granulometria de caulim através de cálculos de máximo empacotamento com o objetivo de alcançar a máxima densidade a cru, mantendo-se uma única composição química final. Os resultados mostraram que utilizando o conceito de empacotamento de partículas e otimizando a distribuição granulométrica foi possível obter corpos de prova com maiores densidades finais, menor retração final, além de reduzir a temperatura de queima, o que impacta diretamente no custo de produção.
Title in English
Influence of particle size distribution in the packaging of raw materials for porcelain formulation.
Keywords in English
Packing
Particle size
Porcelain
Porcelain stoneware
Abstract in English
Complex materials such as porcelain and porcelain stoneware have maximized their properties when they reach high final densities after sintering. However, formulations contain at least four different raw materials, where the kaolin is the major constituent, but also quartz and feldspars. The final particle size of the mixture is controlled by a single step milling of all materials. The attempt of this paper is to make different combinations of particles size distributions of orthoclase, albite and quartz with a single particle size of kaolin by calculation of maximum packing in order to achieve maximum density crude keeping same final chemical composition. The results showed that using the concept of particle packing and optimizing the particle size distribution was possible to obtain specimens with higher density end, the lower total shrinkage, in addition to reducing the firing temperature, which directly impacts the cost of production.
 
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Publishing Date
2011-11-18
 
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