Characterization of steel billet scales generated during the continuous casting process in SIDERPERU steel plant


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Authors
Borja-Castro, LE 
Bustamante Dominguez, A 
Valerio-Cuadros, MI 
Valencia-Bedregal, RA 
Cabrera-Tinoco, HA 
Abstract

jats:titleAbstract</jats:title>jats:pTons of waste is produced during iron steel’s industrial production, creating environmental pollution. This work aims to characterize the steel scale formed on the billet surface during the last step of steel production in the SIDERPERU steel plant. Scanning Electron Microscopy (SEM) shows stacked layers one above the other on steel billets scales surface. Energy Dispersive X-ray (EDX) and X-ray Fluorescence (XRF) reveal the high content of Fe and O, with Ca, Si, Mn, and Cr as minority elemental compounds. X-ray Diffraction (XRD) shows FeO, α-Fejats:sub2</jats:sub>Ojats:sub3</jats:sub> and Fejats:sub3</jats:sub>Ojats:sub4</jats:sub> as crystallographic phases. Magnetometry reveals Verwey transition and paramagnetic signals that screen the Morin transition. Mössbauer Spectroscopy at room temperature displays magnetic and non-magnetic parts. The non-magnetic part has the hyperfine parameters corresponding to predominant nonstoichiometric wustite. Octahedral (Fejats:sup+2</jats:sup>/Fejats:sup3+</jats:sup>) and tetrahedral Fejats:sup+3</jats:sup> hyperfine fields of 46.0 and 49.4 T values respectively are associated to nonstoichiometric magnetite and another sextet with a hyperfine field of 52.0 T is related to hematite.</jats:p>

Description
Keywords
Steel billet scale, Continuous casting, Iron oxides, Mossbauer spectroscopy
Journal Title
Hyperfine Interactions
Conference Name
Journal ISSN
0304-3843
1572-9540
Volume Title
242
Publisher
Springer Science and Business Media LLC