Carbothermal reduction of mill scales formed on steel billets during continuous casting
Authors
Suarez, SME
Borja-Castro, LE
Valerio-Cuadros, MI
Domínguez, AB
Cabrera-Tinoco, HA
Huaman, E
Valencia-Bedregal, RA
Zhao, X
Zhang, Y
Zhang, D
Publication Date
2021-12Journal Title
Hyperfine Interactions
ISSN
0304-3843
Publisher
Springer Science and Business Media LLC
Volume
242
Issue
1
Language
en
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Suarez, S., Borja-Castro, L., Valerio-Cuadros, M., Domínguez, A., Cabrera-Tinoco, H., Huaman, E., Valencia-Bedregal, R., et al. (2021). Carbothermal reduction of mill scales formed on steel billets during continuous casting. Hyperfine Interactions, 242 (1) https://doi.org/10.1007/s10751-021-01769-9
Abstract
<jats:title>Abstract</jats:title><jats:p>A billet is a bar made from crude steel which surface contains scales which are rich in iron oxides. This study presents the carbothermal reduction of the scales formed in steel billets. The process included the reaction of the iron oxides contents with carbon (in ratio 5:1) and annealing in a tubular furnace under argon atmosphere. The occurred reactions are discussed using thermodynamic calculations and thermal analysis which indicate a three-stage reduction process Fe<jats:sub>3</jats:sub>O<jats:sub>4</jats:sub> ➔ FeO ➔ Fe<jats:sub>3</jats:sub>C ➔α-Fe with intermediate reactions at the interval temperature 960 and 1300 °C. The X-ray diffraction confirms the reduction to α-Fe with minor presence of unreacted C, magnetite and wustite. Mössbauer spectroscopy analysis was performed at room temperature where a typical sextet corresponding to the dominant α-Fe is shown as well as wustite, magnetite and cementite to a lesser extent. The magnetization measurements confirm the ferromagnetic state corresponding to the α-Fe.</jats:p>
Keywords
Article, Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2021), 5-10 September 2021, Brasov, Romania, Mill scales, Steel billets, Continuous casting process, Steel industry, Mossbauer spectroscopy, Carbothermal reduction, X-ray diffraction
Sponsorship
Universidad Nacional de Cañete (Unknown)
Identifiers
s10751-021-01769-9, 1769
External DOI: https://doi.org/10.1007/s10751-021-01769-9
This record's URL: https://www.repository.cam.ac.uk/handle/1810/332381
Rights
Licence:
http://creativecommons.org/licenses/by/4.0/
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