Formulação e caracterização de peças cerâmicas fabricadas a partir dos produtos da combustão do carvão mineral.

Abstract

Given the growing concern with the conservation of the environment and the proper disposal of industrial waste, it has been of great interest the research and formulation of techniques that have as pillar sustainable development. The use of coal as fuel in various industrial processes such as thermoelectric and steel mills generates relevant amounts of waste or by-products, called coal combustion product (CCPs). Therefore, viable alternatives for the correct disposal or technological applications of this by-product are studied with or without the addition of reinforcement phases in order to reduce the environmental impacts caused. Among these applications, one possible approach is the use of CCPs for the manufacture of ceramic tiles, since these residues are chemically similar to several ceramics. Given this, this work aimed to evaluate the feasibility of manufacturing ceramic parts from the product of coal combustion. In addition to the manufacturing, for the characterization and analysis of the prismatic and circular samples produced, the following techniques were used: diametral compression tensile strength, Vickers microhardness, scanning electron microscopy and thermal analysis. For the determination of the physical and mechanical properties the tests of water absorption, role of porosity and bulk density were performed. The results confirmed the potential and feasibility of using CCPs to completely compose the ceramic tiles matrix.