Kilns
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Numerical simulations of ceramic firing in catenary kilns
Abstract Kiln geometries were developed to reach homogeneous temperatures above 900 °C, during the firing process, aiming to improve the production process of the ceramists from Vale do Jequitinhonha (MG/Brazil). Techniques of reactive flow numerical solution using the software Ansys CFX have been used to foresee the behavior of the firings. Two types of ca
Cerâmica. Publicado em: 2022
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2. Characterization, Source Apportionment and Health Risk Assessment of PM2.5 for a Rural Classroom in the Amazon: A Case Study
Classrooms are microenvironments in which children and teenagers may be exposed to fine particulate matter (PM2.5). Iranduba is a rural city in the Amazon region close to many brick kilns and road with high traffic levels. In this study, indoor and outdoor PM2.5 levels were measured in a classroom in Iranduba, and the PM2.5 exposure effects on student’s he
J. Braz. Chem. Soc.. Publicado em: 2021-02
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3. Caracterização da cinza de caroço de açaí residual para adição ao concreto
Resumo Os problemas ambientais são uma realidade do mundo atual e vêm associados ao crescimento urbano e populacional, com pouco ou nenhum planejamento. O setor da construção civil é um dos maiores consumidores de recursos naturais e gerador de resíduos sólidos. Assim, é interessante pensar em uma maneira de incorporar materiais que hoje são conside
Ambient. constr.. Publicado em: 2019-03
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4. Influence of magnesia in the infiltration of magnesia-spinel refractory bricks by different clinkers
Abstract In cement production, which involves the production of cement clinker in rotary kilns, the main refractories used are magnesia-spinel bricks. These bricks may suffer infiltration by the clinker liquid phase, resulting in the corrosion of the spinel and the formation of low refractoriness mineralogical phases, such as the Q phase (C20A13M3S3), which
Rem: Rev. Esc. Minas. Publicado em: 2015-12
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5. Metodologia de projeto de queimadores a jato para fornos de clínquer / Design methodology of jet burners for clinker kiln
Os queimadores a jato são caracterizados pela elevada quantidade de movimento na direção axial e elevada potência, estes queimadores são muito empregados em fornos rotativos, principalmente na indústria do cimento e da calcinação. O projeto de queimadores a jato é realizado usualmente aproximando o escoamento de ar primário no queimador por um mode
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2011
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6. Louça branca para a Paulicéia: arqueologia histórica da fábrica de louças Santa Catharina / IRFM - São Paulo e a produção da faiança fina nacional (1913-1937) / Industrial pottery for São Paulo city: Historical Archeology of the Santa Catharina Pottery Factory / IRFM - São Paulo and the production of the national refined earthenware (1913 - 1937).
The year was 1912, and an Italian immigrant and a group of brothers, drawn from an Aristocratic family farmer, met at an office above the famous Guarany Coffee House, in the beating heart of the city, the Triangle, to establish a fellowship and combine the procedures to the foundation of the first refined earthenware factory in the country, based on an indus
Publicado em: 2010
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7. WOOD CHARCOAL PRODUCTION AND LANDSCAPE CHANGE IN PEDRA BRANCA MASSIF, RIO DE JANEIRO, RJ / PRODUÇÃO DE CARVÃO VEGETAL E MUDANÇAS NA PAISAGEM DO MACIÇO DA PEDRA BRANCA, RIO DE JANEIRO, RJ
Dezenas de carvoarias históricas ocorrem na bacia do Rio Caçambe, localizada no sudeste do Maciço da Pedra Branca, Rio de Janeiro, RJ. Estas carvoarias são vestígios da produção de carvão no final do século XIX e início do XIX, destinadas ao abastecimento da cidade do Rio de Janeiro. O objetivo desta dissertação é analisar os fragmentos de carv�
Publicado em: 2010
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8. Numerical and experimental thermal analysis of a tunnel kiln used in ceramic production
The available technology for tunnel kilns in Brazil is practically empirical and there is a lack of fundamental studies developed as an aid for the design of new kilns or for the retrofit of old ones. Here, a thermal model of a tunnel kiln is developed allowing the numerical simulation of kilns and dryers aiming toward a more efficient and less energy consum
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-12
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9. Scrap tire ashes in portland cement production
Scrap tires are not considered harmful waste, but their stocking and disposal are a potential health and environmental risk. Properly controlled calcinations at high temperatures make tire combustion an interesting alternative due to its high calorific power, comparable to that of fuel-oil. Consequently, using them as an alternative combustible material in c
Materials Research. Publicado em: 2009
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10. Alternative fuels mixture in cement industry kilns employing Particle Swarm Optimization algorithm
Most of the works accomplished in the optimization area in the cement industry are addressed to solve problems just considering only one variable, forgetting that it includes too many variables and they act at the same time. Among the main variables it can be mentioned the quality of the final product, the environmental ones, the costs along the process and
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2008-12
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11. UMA ABORDAGEM HEURÍSTICA PARA O PROBLEMA DE PLANEJAMENTO DA PRODUÇÃO EM FUNDIÇÕES ESTUDO DE CASO
The main objective of this work is to propose optimization methods of the production to a medium size market foundry industry. Taking into consideration the peculiarities of the enterprise used as case study, on the contrary of many other works in this area, the present research is focused in the production programming which is based in the macharia( it is a
Publicado em: 2008
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12. DEVELOPMENT OF ELECTROFUSED AGGREGATES FOR USE IN REFRACTORIES FOR THE BURNING ZONE OF CEMENT KILNS / "Desenvolvimento de agregados eletrofundidos para utilização em refratários para a zona de queima de fornos de cimento"
Os agregados eletrofundidos são largamente utilizados para a produção de refratários tendo em vista a melhoria geral de propriedades propiciada pelo emprego dos mesmos. Neste trabalho projetaram-se agregados eletrofundidos adequados para aplicação em refratários para a zona de queima de fornos de cimento. Para o projeto dos mesmos foi realizada inicia
Publicado em: 2006