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Menad, N.-E., Kana, N., Seron, A. & Kanari, N. (2021) New EAF Slag Characterization Methodology for Strategic Metal Recovery. Materials, 14. 
Added by: Richard Baschera (2021-06-03 09:39:02)   Last edited by: Richard Baschera (2021-06-03 09:42:56)
Type de référence: Article
DOI: 10.3390/ma14061513
Clé BibTeX: Menad2021
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Catégories: HORSIMN
Mots-clés: characteristics, EAF slag, Mo, Recovery, ssbauer spectroscopy, valuable metals
Créateurs: Kana, Kanari, Menad, Seron
Collection: Materials
Consultations : 5/32
Indice de consultation : 1%
Indice de popularité : 0.25%
The grown demand of current and future development of new technologies for high added value and strategic metals, such as molybdenum, vanadium, and chromium, and facing to the depletion of basic primary resources of these metals, the metal extraction and recovery from industrial by-products and wastes is a promising choice. Slag from the steelmaking sector contains a significant amount of metals; therefore, it must be considered to be an abundant secondary resource for several strategic materials, especially chromium. In this work, the generated slag from electric arc furnace (EAF) provided by the French steel industry was characterized by using multitude analytical techniques in order to determine the physico-chemical characteristics of the targeted slag. The revealed main crystallized phases are larnite (Ca2SiO4), magnetite (Fe3O4), srebrodolskite (Ca2Fe2O5), wustite (FeO), maghemite (Fe2.6O3), hematite (Fe2O3), chromite [(Fe,Mg)Cr2O4], and quartz (SiO2). The collected slag sample contains about 34.1% iron (48.5% Fe2O3) and 3.5% chromium, whilst the vanadium contents is around 1500 ppm. The Mossbauer spectroscopy suggested that the non-magnetic fraction represents 42 wt% of the slag, while the remainder (58 wt%) is composed of magnetic components. The thermal treatment of steel slag up to 900 degrees C indicated that this solid is almost stable and few contained phases change their structures.
Place: ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND Publisher: MDPI Type: Article
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