Characterisation of refractory ceramic pressed body containing industrial waste


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.


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


Frade, SB; Gomes, G; Correia, SL; Segadaes, AM

nossos autores


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.

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