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The growing accumulation of steel slag poses an environmental challenge while simultaneously representing a significant source of secondary raw materials for modern metallurgy. This study examines vibrofluid magnetic separation as an effective pre-treatment strategy for converter steel slag, enabling selective concentration of iron-bearing phases and the production of non-magnetic fractions suitable for further valorization. After particle-size classification, the slag was subjected to dry magnetic separation and subsequently characterized by X-ray fluorescence and X-ray diffraction. Both magnetic and non-magnetic products were further investigated as precursors for ceramic glazes to evaluate their applicability in value-added material pathways. Colour characteristics of the fired samples were determined spectrophotometrically to assess the functional behaviour of the prepared systems. Magnetic fractions exhibited substantial iron oxide enrichment, indicating strong potential for metallurgical recycling, whereas the remaining material demonstrated promising applicability in thermally processed products. The proposed approach promotes near-complete slag utilization, limits residual waste generation, and supports circular economy objectives by integrating resource recovery with downstream material applications.
Keywords: steel slag; vibrofluid magnetic separation; secondary raw materials; resource recovery; circular economy; metallurgical waste valorization© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.