Per: Beatriz Baiôcco Louzada (universidade federal de viçosa), Carolina de Souza Pires Costa (universidade federal de viçosa), pedro henrique cota drumond (universidade federal de viçosa), beatryz cardoso mendes (universidade federal de viçosa), leonardo gonçalves pedroti (universidade federal de viçosa)
Abstract:
Currently, one of the biggest environmental problems in Minas Gerais is the storage of washed tailings, derived from mining, in dams. In order to reduce this impact, the present work aims to reuse bauxite mining tailings to produce ceramic bricks. To obtain a material with good cohesion and plasticity for pressing and extrusion, a clay soil was mixed with the working material and the manual pressing of cylindrical samples, with 10% humidity and different tailings proportions, was done. After firing, the properties of linear shrinkage, water absorption index, apparent porosity, bulk density and compressive strength were evaluated. The results show that the production of solid bricks, with the addition of up to 10% of bauxite and pressed from the mixture between tailings and yellow clay, is feasible both from an environmental and technical points of view, meeting the Brazilian specifications for such product.