Análise da viabilidade da produção de cerâmica vermelha à base de chamote

Abstract

Ceramic industries discard a large amount of waste, mainly from the burning stage, which most often occur in an artisanal way and with loads of losses due to the use of inefficient furnaces, because they are intermittent and not present control temperature, which causes problems of generation of defects, which cause a high percentage of loss in each batch. Thus, the present study relied on the use of grog for the production of ceramics and evaluation of their technological characteristics. Ceramic tailings were mechanically comminuted and subsequently processed in ball mills in order to achieve adequate particle size. The other components in the formulation were used for kaolin and phyllite. The specimens were shaped by uniaxial pressing and sintered at temperatures, 1150 ° C, 1200 ° C and 1250 ° C for assessment of technological properties. The properties measured were linear firing shrinkage, apparent porosity, water absorption, apparent specific gravity and mechanical strength by testing three point bending. The results showed that the grog decreased the linear firing shrinkage and the phyllite quite possibly eliminated the pores of the body-of-evidence, given that values of water absorption were found quite low. The variation of the apparent specific gravity was not significant for the samples. IVF formulation that has the highest percentage of grog had become quite feasible for the production of bricks, the higher temperatures to 1150 ° C, it showed the lowest linear firing shrinkage and other characteristics analyzed in agreement with the literature.