Alkaline hydrometallurgical approach for steel slag management

Fernando Pereira (1, 2, 3) , Olivier Faure (1, 2, 3) , Veronique Lavastre (4, 2) , Steve Peuble (1, 2, 3) , Frédéric Paran (1, 2) , Jean-Michel Herri (1, 5) , Didier Graillot (1, 2)

1 PEG-ENSMSE - Département Procédés pour l'Environnement et Géoressources
2 EVS - Environnement, Ville, Société
3 ARMINES
4 LMV - Laboratoire Magmas et Volcans
5 LGF-ENSMSE - Laboratoire Georges Friedel

Steel slags are artificial mineral matrices produced by the steel and iron industry. While they are considered as industrial waste, these slag heaps represent an important potential economic resource. The importance of hydrometallurgy in production and recycling of strategic metals cannot be stressed enough. Nevertheless, their use is increasingly under economic pressure since 2014. Clearly, improving or even optimizing these processes is required. In addition, although steel slags are classified as non-hazardous thermal waste, it is well known that most metals they contain are quite toxic to living organisms and pose serious environmental issues. Thus, reusing steel slags appears the option of choice to ensure their sustainable management.

Mots clés: Steel slags; hydrometallurgy; alkaline; industrial waste

Domaines: Génie des procédés; Sciences de l'environnement; Ingénierie de l'environnement

Fernando Pereira, Olivier Faure, Veronique Lavastre, Steve Peuble, Frédéric Paran, et al.. Alkaline hydrometallurgical approach for steel slag management. 2^èmes Rencontres Scientifiques: Réhabilitation et Valorisation des Sites et Sols pollués, RV2S - 2^nd Scientific Meeting: Rehabilitation of polluted Sites and Soils, RV2S/RSS 2018, Oct 2018, Saint-Etienne, France. Ecole Nationale d’Ingénieurs de Saint-Etienne, 2018, Proceeding: 2^èmes Rencontres Scientifiques : Workshop Réhabilitation et valorisation des sites et sols pollués; Proceeding: 2^nd Scientific Meeting: Workshop on Rehabilitation of polluted Sites and Soils. ⟨emse-03154750⟩