resumo
This study investigates the use of an industrial refractory brick waste in the refractory based silica and alumina ceramic body. From the characterization of the waste, a mixture containing a clay, silica, alumina and waste was processed via wet route and sintered at 1400 °C. The specimens were evaluated in dry (density) and after sintering (linear shrinkage, density and modulus of rupture).Microstructural characterization by scanning electron microscopy (secondary electron) revealed a microstructure unevenly and a presence of big porous which shows also small amounts of vitreous phase, which can be related to sintering process not fully finished. The results for the linear shrinkage (about 6 %) and modulus of rupture at three points (about 63 MPa) showed that the mixture containing the refractory brick waste and the processing conditions were satisfactory for obtaining a suitable refractory material for the manufacture of bricks for melting furnaces. © 2018 Trans Tech Publications, Switzerland.
palavras-chave
Alumina; Brick; Ceramic materials; Characterization; Industrial wastes; Melting furnaces; Mixtures; Processing; Scanning electron microscopy; Shrinkage; Silica; Sintered alumina; Sintering; Micro-structural characterization; Modulus of rupture; Physical and mechanical properties; Processing condition; Refractory bricks; Refractory ceramics; Secondary electrons; Sintering process; Refractory materials
autores
Frade, SB; Gomes, G; Correia, SL; Segadaes, AM
nossos autores
Ana Maria B C Segadães
Professor(a) Jubilado(a)agradecimentos
The authors appreciate the financial support received from the UDESC-Joinville, from the Brazilian Research Agencies CNPq (G. Gomes and S.L. Correia, grant) and CAPES (S. B. Frade, grant), and are thankful to Endeka Ceramics (Mogi Guaçu, SP), Schulz S/A (Joinville, SC) and Mineração Paraná (Tijucas do Sul, PR) to provide the raw materials used at work. The authors are also very grateful to the foundry Tupy S/A (Joinville, SC) for the support of laboratories and equipment that were essential to developing this work.