Aproveitamento da escória de alto-forno, do município de Marabá, como matéria-prima para fabricação de material cerâmico

Abstract

The municipality of Marabá is a dynamic commercial center, aggravated by the activities of the steel industry. In its industrial park, there are ten plants for the production of pig-iron. As residue material treated in the steel, we are scum. This has been generated in large numbers raising a concern regarding the environmental impacts that may result, contaminating soil and water. Making it necessary to study a way to reuse this material. The alternative shown in this work, has been studied the manufacture process of ceramic material obtained by compression, utilizing as primesources: disposal of blast furnace and clay proceeding from the city of Marabá/PA. Has been evaluated the influence of the inlet variables and the average diameter of the particles, disposal proportion and the drying temperature of the proof materials, by means of a complete factorial planning in two levels. The response variables analyzed had been chosen between the ones that have bigger probability to affect the quality of the finished product: rupture tension to flexion (RTF) and water absorption (WA). Has been obtained a mathematic model, for each issue, capable of predict the response variables, in function of the inlet variables statistically significant. The results shows that the controlled use of disposal mixed to the clay for the manufacture of ceramic products is technically viable, demonstrating as well viability to be an efficient alternative in the of diminution pollution problems.