Processamento e avaliação das propriedades tecnológicas de porcelanato obtido com adição de rejeito de minério sulfetado de cobre

Abstract

Mining practice derive numerous harmful effects to the environment. In this paper highlights the problem of continuous production and excessive waste of metal ores. In this context, the objective is an economic purpose for this residue discarded, in order to promote environmental impacts arising damping, proposed to study the reuse of copper ore tailings incorporated in formulations of porcelain. To perform the proposed analysis was selected a standard formulation of porcelain, promoting, based on this, the partial replacement of clay by percentages of copper ore tailings equivalent to 3, 6, 9 and 12%, evaluating, later, the attendance of these regulatory requirements. Was applied three firing temperatures for each formulation studied, which were 1150, 1200 and 1250°C with plateau burning of 30 minutes. After sintering, the samples were evaluated for apparent porosity, water absorption, linear shrinkage, apparent gravity, modulus of rupture. The results indicate compliance with the standards for the technological properties of porcelain.