Work

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

Year: 2024

Type: article

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.

Source: Metallurgical and Materials Transactions B

DOI: 10.1007/s11663-024-03288-8

Authors: Caspar Stinn, Antoine Allanore

Institution: Massachusetts Institute of Technology

Language: English

Topic: Metallurgical Processes and Thermodynamics

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Climate action

Open Access status: hybrid

Estimated APC paid: $3,790