UTILIZACIÓN DE ESCORIA DE ACERÍA DE HORNO ELÉCTRICO DE ARCO EN LA CARBONATACIÓN ACELERADA

The valorization of industrial waste in the steel industry is of great interest within the circular economy model and in the development of strategies for carbon sequestration. Currently, due to sustainable policies, the number of industrial process plants in steel factories is increasing, where the steel production system using basic oxygen furnaces (BOF) is being replaced by electric arc furnaces (EAF). Compared to BOF, the EAF has the advantage of using a renewable energy source and recycling scrap for steel production, thus resulting in lower emissions of polluting gases. The EAF process generates byproducts, such as slag, with a chemical composition different from the residues of the BOF process, which limits its use in conventional applications in civil construction, such as infrastructure works or as an additive to cement. The accelerated carbonation process allows reactions between CO₂ and oxides present in EAF steel slag to occur in a shorter time within the reactor, with a significant increase in compressive strength and chemical stability of the samples when compared to the carbonation of the material under atmospheric conditions. This work aims to present a review of recent studies on the use of EAF slag and its application in the accelerated carbonation process as a means of valorizing this waste.