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Previous issue date: 2015-11-27 / A ind?stria ceramista gera res?duos em v?rias etapas de seu processo, por produtos defeituosos, res?duos da queima de combust?veis s?lidos, entre outros. Esses res?duos s?o despejados em aterros, lix?es ou diretamente nas vias, o que causa um impacto ambiental negativo. Este trabalho apresenta um estudo para incorporar os res?duos de cinza de lenha da algaroba e chamote (pe?as de refugo de cer?micas j? sinterizadas), nas massas cer?micas para confec??o de Blocos de Veda??o. Os procedimentos metodol?gicos consistem na caracteriza??o qu?mica e mineral?gica dos res?duos e das mat?rias-primas, e caracteriza??o f?sico-mec?nica das formula??es das misturas com argila, silte e res?duos. Foram produzidos corpos de prova por prensagem, com varia??es de composi??es no intervalo de 0%, 5%, 10% e 15% em massa de res?duo. A sinteriza??o foi realizada em forno tipo mufla, com patamares nas temperaturas de 850 ?C, 900 ?C, 950 ?C, 1000 ?C e 1050 ?C. As propriedades f?sico-mec?nicas avaliadas foram: Absor??o de ?gua, Retra??o Linear de Queima, Porosidade Aparente, Massa Espec?fica Aparente e Resist?ncia Mec?nica ? Flex?o. Foi realizada an?lise por Microscopia Eletr?nica de Varredura nas superf?cies de fratura dos corpos de prova. Foram avaliadas as propriedades de Retra??o Linear de Secagem e Queima, Absor??o de ?gua e Resist?ncia Mec?nica ? Compress?o dos Blocos de Veda??o com 5% de res?duo de cinza da lenha de algaroba, sinterizados no patamar de temperatura de 900 ?C. Como resultados principais, concluiu-se sobre a viabilidade em se utilizar os res?duos de cinza da lenha de algaroba para conferir propriedades refrat?rias ao produto cer?mico. J? o res?duo de chamote, por ser derivado do pr?prio produto cer?mico, n?o interferiu nas propriedades finais. Os estudos comprovaram que a incorpora??o desses res?duos seria uma alternativa tecnol?gica para reduzir o impacto ambiental causado pelo setor industrial. / The ceramics industry generates waste at various stages of that process, defective products, waste from burning solid fuels, among others. This waste is dumped in landfills, garbage dumps or directly on roads, which has a negative environmental impact. This paper presents a study to incorporate the waste of algaroba wood and chamote (scrap pieces of ceramic already sintered), in to the ceramic material for making sealing blocks. The methodological procedures consist in the characterization of chemical and mineralogical residues, raw materials, and physical-mechanical of the formulations of mixes with clay, silt and waste. By pressing test pieces were produced using a pressure of 200 kgf/cm?, varying compositions in the range of 0%, 5%, 10% and 15% by weight of residue. The sintering was performed in a muffle furnace, with the temperature levels of 850 ? C, 900 ? C, 950 ? C, 1000 ? C and 1050 ? C. The evaluated physical and mechanical properties were: Water Absorption, Linear Shrinkage Burning, Apparent Porosity, Apparent Density and Mechanical Resistance to Flexion. Analysis was carried out by Scanning Electron Microscopy on fracture surfaces of the specimens. Evaluation of linear shrinkage property drying and firing , water absorption and mechanical resistance to compression of the
sealing blocks 5% wood ash residue, sintered at 900 ?C hold temperature in the laboratory the products manufactured on an industrial scale. The main results, it was found on the viability of using the residues of algaroba wood and to confer refractory properties of the ceramic product. The main results, it was concluded feasibility of using the ash residues algaroba wood to impart refractory properties to the ceramic product and the residue of chamote, being derived from the own ceramic product not interfere with the properties, when used in a percentage of up to 5%.Since the residue of chamote being derived from the ceramic product itself had no effect on the properties. Studies in the laboratory have shown that the incorporation of up to 5% of these residues may be adopted as an alternative technology to reduce the environmental impact caused by the industrial sector, without compromising the final properties of the material, since the results on an industrial scale showed absorption values 11.66 and 11.74 of water and waste products respectively, within the parameters of NBR - 15,270, since the mechanical strength was 1.25 MPa and 0.94 MPa respectively for products with and without residue, lower than the minimum required by the technical standard that is 1.5 MPa.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/21044 |
| Date | 27 November 2015 |
| Creators | Almeida, Melise Carina Duarte de |
| Contributors | 06296687877, http://lattes.cnpq.br/2365059843175411, Melo, Marcus Antonio de Freitas, 04514998320, http://lattes.cnpq.br/5840621182000517, Galdino, Jos? Nildo, 87555492415, http://lattes.cnpq.br/3713583703008385, Melo, Maxymme Mendes de, 00846136457, http://lattes.cnpq.br/3779445657082353, Paskocimas, Carlos Alberto |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA MEC?NICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| 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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