Influence of the Recirculation of Various by-products Generated through Electric Arc Furnace Route on EAF Slag Quality

The Fines2EAF project aims to increase the value of Electric Arc Furnace steelmaking residues by their internal recycling and reuse in form cement-free briquettes. sustainability for a profitable fines’ recirculation pass through conservation steel slag quality terms chemistry, physics eco friendliness. To do this, industrial trials have been conducted charging self-reducing slag-former briquettes made primary secondary fines materials. Several samples supplied from three different European EAF shops analysed. specimens characterized XRF, XRD SEM thoroughly define crystallography, morphology microstructure. comparison with corresponding reference (i.e., produced without recirculation) also allowed highlight differences present. Leaching tests on briquette-added according EN 12457-4 standard assess compliant local environmental regulation. obtained results highlighted that using exhibits crystallographic morphological properties very similar samples, limited attributed scrap feedstock intrinsic heterogeneity. No relevant leachate concentration could be detected when compared influence raw-material into considered at worst negligible, if not positive some elements like Ba (−22.86%), V (−13.19%) W (−14.83%). Considering all analyses performed, no adverse effect detected.