Disponibilidade e caracterização de resíduos industriais provenientes de processos de fundição

Abstract

Industrial solid waste from smelters has generated great concern, due to its high volume and its disposal in industrial landfills, they contribute significantly to the country in relation to taxes and jobs generated. In this way the proposal of this course conclusion work is to deepen more about the researches in relation to the characterization of the residues of foundry slag, foundry sand and iron powder in order to better its final disposition. In view of the possibilities for reusing these residues, which could become raw material for another process, it is necessary to know their composition. A series of characterizations were carried out through the analysis of fixed mineral residues, FAAS, XRD, granulometry, magnetic behavior and total carbon and nitrogen content. Within the results, the iron powder that showed to be a precursor magnetite, hematite, or iron oxide (III) stands out. The casting slag did not show positive results for possible reuse, due to its large granulometry and high heterogeneity between the samples. And the foundry sand that a small part is already sent to the civil construction, we came to the conclusion that more incentive is needed to reuse it more of it.