Sulfide Route to Chromium–Nickel–Molybdenum Ferroalloys for Stainless Steel Production

Author(s)
Stinn, Caspar; Allanore, Antoine
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Abstract
New methods of materials separation and metal production utilizing sulfide chemistries may support a paradigm shift in sustainable metallurgy. We leverage sulfidation with elemental sulfur, aluminothermic reduction, and slag refining to obtain a chromium–nickel–molybdenum ferroalloy and stainless steel using a sulfide-based route without direct greenhouse gas emissions. The absence of carbothermic reduction from the mineral, concentrate, and matte feedstocks tried herein indicates that argon-oxygen-decarburization may no longer be necessary to refine stainless steel products.
Date issued
2024-10-28
URI
https://hdl.handle.net/1721.1/157492
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Journal
Metallurgical and Materials Transactions B
Publisher
Springer Nature
Citation
Stinn, C., Allanore, A. Sulfide Route to Chromium–Nickel–Molybdenum Ferroalloys for Stainless Steel Production. Metall Mater Trans B (2024).
Version: Final published version
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