Use of Waste of Ornamental Stone in Ceramic Mass Incorporation in Brazil

Abstract

Due to the great generation of waste in the industries of ornamental stone that can cause damage to the environment, it was necessary to carry out studies for their use. Therefore, one of its uses that has been studied is the incorporation of these wastes in ceramic masses. Aiming to mitigate the impacts caused by the disposal of these wastes and minimize the use of the raw material (clay). The objective of this work was to study the use of sawdust waste of blocks of ornamental stone in industrial ceramic mass. Characterization of the waste and ceramic mass was carried out. Residual ceramic (0%) and 10, 20, 30, 40, and 50% by weight of the waste from the sawdust were prepared. Test specimens were formed by uniaxial pressing, dried at 110 °C and sintered at 950 °C. Technological tests were carried out on the specimens for determination of apparent specific mass, water absorption, dilatometry, and linear retraction. With all these tests carried out on the materials and test specimens, it was possible to observe that the use of the wastes in the incorporation of ceramic masses is possible and can even improve the ceramic artifact, bringing a sustainable development and industrial ecology to both sectors involved.