Otimização no processo de incorporação de resíduo vítreo em massas cerâmicas para grés sanitário.

Abstract

The society's concern for the environment has been increasing steadily over the years. The population has focused on the concepts of sustainabiiity and thus various segments related to science and technology is looking for alternatives to control or minimize damage caused by indiscriminate consumption of raw materials and energy, and the high volume of waste generated. In this perspective, the goal of this research is to optimize the use of waste flat glass in substitution for feldspar on ceramic sanitary earthenware, to obtain products having physicalmechanical properties similar to traditional, as well as decrease the amount of this type of waste accumulated in the environment. The raw materials were characterized by testing for energy dispersive spectroscopy x-ray; sieve analysis, x-ray diffraction, differential thermal analysis and thermogravimetry. They were then put through the programs and 7.0 statistic reformix ceramic masses with and without waste of flat glass in the percentage of 4%, 5% and 6%, then its rheological properties were evaluated. The ceramic samples were initially dried at 110 ° c, to be burned at temperatures of 1.220 °C, 1.230 °C, 1.240 °C and 1.250 °C. Were performed following physico-mechanical water absorption, apparent porosity, apparent specific gravity, linear shrinkage in drying and firing, loss on ignition, bending test at three points, and scanning electron microscopy. The results showed the importance of using an optimization program product and the use of glassy residue mass for sanitary earthenware can be used by replacing partially the feldspar in proportions close to 5%, since these present values of physico-mechanical properties in permitted by industries porcelain stoneware and ABNT.