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Rem: Revista Escola de Minas

Print version ISSN 0370-4467

Abstract

MEDEIROS, Elisandra Nazaré Maia de; SPOSTO, Rosa Maria; NEVES, Gelmires de Araújo  and  MENEZES, Romualdo Rodrigues. Technical feasibility of the incorporation of rice husk ash, sludge from water treatment plant and wood ash in clay for ceramic coating. Rem: Rev. Esc. Minas [online]. 2014, vol.67, n.3, pp.279-283. ISSN 0370-4467.  http://dx.doi.org/10.1590/S0370-44672014000300006.

This paper presents a technical feasibility analysis of the incorporation of Rice Husk Ash (RHA), Sludge from Water Treatment Station (SWTS) and Wood Ash (WA) in clay for the mass used in ceramic coating. The methodology involved analyzing the technological properties of various compositions. Samples were prepared for pressing, with compositions from 0 to 50% waste and 50 to 100% clay. The sintering was carried out in a muffle furnace. The properties studied were: solubility and leaching (environmental characterization), water absorption and rupture strength modulus. It was concluded that the best condition was the use of up to 25% of the residuals at temperatures of 1000 ºC, 1100 ºC and 1150 ºC.

Keywords : wood ash; rice husk ash; sludge from water treatment; ceramic coating.

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