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Previous issue date: 2012-11-23 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Extractivism mineral is considered an activity highly degrading, due to the large volume of
material that he moves in the form of ore and residues. The vast majority of mining
companies do not show any technology or economically viable application that will allow the
recycling of mineral residue, these being launched in areas receiving located the "open skies"
degrade the environment. In Rio Grande do Norte to the production of ceramic red restricts
their activities to the production of products such as: solid bricks, ceramic blocks, tiles,
among others. Seeking to unite experiences and technical information that favor sustainable
development, with important benefits to the construction sector and civil society in general,
the present work studies the incorporation of the residue of scheelite in ceramic matrix
kaolinitic, coming from the municipality of Boa Sa?de - RN, in percentage of 5 %, 10 %,
20 %, 30% 40% and 50 %, by evaluating its microstructure, physical properties and
formulation. The raw materials were characterized through the trials of X ray fluorescence,
Diffraction of X rays, Differential Thermal Analysis and Termogravimetric Analysis. The
samples were formed and fired at temperatures of 850o, 900o, 1000o, 1050o, 1100o, 1150o and
1200 oC, with isotherm of 1 hour and heating rate of 10 oC/min. Assays were performed
technological of loss to fire, Water Absorption, Apparent Porosity, Apparent Density, Mass
Loss in Fire and Bending Resistance; in addition to the Scanning Electron Microscopy,
analyzing their physical and mechanical properties. The use of residue of scheelite in ceramic
mass kaolinitic provided a final product with technological properties that meet the technical
standards for the production of bricks and roofing tiles, with the percentage of 20% of waste
that showed the best results / O extrativismo mineral ? considerado uma atividade altamente degradante, devido ao grande
volume de material que ele movimenta em forma de min?rio e res?duo. A grande maioria das
empresas mineradoras n?o apresenta nenhuma tecnologia ou aplica??o economicamente
vi?vel que permitam a reciclagem do res?duo mineral, sendo estes lan?ados em ?reas de
recebimento localizadas a c?u aberto , degradando o meio ambiente. No Rio Grande do
Norte a produ??o de cer?mica vermelha restringe suas atividades ? produ??o de produtos
como: tijolos maci?os, blocos cer?micos, telhas, dentre outros. Buscando unir experi?ncias e
informa??es t?cnicas que favore?am o desenvolvimento sustent?vel, com importantes
benef?cios ao setor da Constru??o Civil e ? sociedade em geral, o presente trabalho estuda a
incorpora??o do res?duo de scheelita em matriz cer?mica caulin?tica, proveniente do
munic?pio de Boa Sa?de RN, em percentuais de 5%, 10%, 20%, 30% 40% e 50%, avaliando
sua microestrutura, propriedades f?sicas e formula??o. As mat?rias-primas foram
caracterizadas atrav?s dos ensaios de Fluoresc?ncia de raios X, Difra??o de raios X, An?lise
T?rmica Diferencial e An?lise Termogravim?trica. Os corpos de prova foram conformados e
queimados nas temperaturas de 850o, 900o, 1000o, 1050o, 1100o, 1150o e 1200 oC, com
isoterma de 1 hora e taxa de aquecimento de 10 oC/min. Foram realizados os ensaios
tecnol?gicos de Perda ao Fogo, Absor??o de ?gua, Porosidade Aparente, Massa Espec?fica
Aparente e Tens?o de Ruptura ? Flex?o; al?m da Microscopia Eletr?nica de Varredura,
analisando-se suas propriedades f?sicas e mec?nicas. A utiliza??o de res?duo de scheelita em
massa cer?mica caulin?tica propiciou um produto final com propriedades tecnol?gicas que
atendem as normas t?cnicas para produ??o de blocos e telhas cer?micas, sendo que o
percentual de 20% de res?duo apresentou os melhores resultados
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12813 |
| Date | 23 November 2012 |
| Creators | Machado, Tercio Graciano |
| Contributors | CPF:05012180410, http://lattes.cnpq.br/9858094266525225, Silva, Elialdo Chib?rio da, CPF:85241580425, http://lattes.cnpq.br/5426129339908081, Costa, Francin? Alves da, CPF:45327220478, http://lattes.cnpq.br/8698567925323942, Silva, Gilson Garcia da, CPF:56634161453, http://lattes.cnpq.br/8681275097040450, Silva, Jaquel?gia Brito da, CPF:02585622428, http://lattes.cnpq.br/5948828937239319, Gomes, Uilame Umbelino |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Ci?ncia e Engenharia de Materiais, UFRN, BR, Processamento de Materiais a partir do P?; Pol?meros e Comp?sitos; Processamento de Materiais a part |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| 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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