Characterization of bentonite beneficiation residue for use in structural ceramics

Abstract

In this work, the use of residues from the bentonite mining of the State of Bahia, Brazil, in the manufacture of structural ceramic bodies for application in bricks, blocks, and tiles is studied. The methodology used in this study consisted of the preparation of common clay specimens with the substitution of clay for the bentonite beneficiation residue in 0, 5, and 10% in weight. After the conformation were done ceramic tests based on ABNT standards for tests such as bending stress, retraction, and water absorption. The clay and the residue were characterized by techniques such as DRX. The beneficiation residue showed potential use in the manufacture of structural ceramic products.