Caracterização de sucata recuperada a partir de escórias siderúrgicas e sua utilização em um forno elétrico a arco

Abstract

As a by-product from the steelmaking, the steelmaking slag has a wide application range, like in civil construction, road construction, as armor stones for hydraulic engineering constructions or fertilizers for agricultural purposes. However, given the fact that the steelmaking slag has a high iron content, its recovery potential from the slag can become an interesting profit resource. In this paper, three metallic scraps originated from mineral processing were characterized and its operational results as a raw material for an Electric Arc Furnace analyzed. The materials were characterized as their compositions, metallic yields and molecular phases. One of the scraps was gradually added as raw material in the EAF and its operational results per heat were analyzed. The financial result was a significant cost reduction, given the fact that at the end of the experiments, about twenty-five percent of the metallic charge at the EAF was substituted for the recovered scrap with approximately zero cost. For the environmental side, storage waste area, water pollution, soil contamination, wind drag and dissipation in rainwater were reduced.