The Paton Welding Journal, 2025, №02

2025 №02 (03)

DOI of Article 10.37434/tpwj2025.02.04

2025 №02 (05)

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The Paton Welding Journal, 2025, #2, 24-29 pages

Producing a wüstite melt by thermal decomposition of hematite pellets with argon plasma

V.O. Shapovalov¹, V.G. Mogylatenko^1,2, M.V. Karpets^1,2, R.V. Kozin¹

¹E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.
²National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” 37 Prosp. Beresteiskyi, 03056, Kyiv, Ukraine. E-mail: vmogilatenko@gmail.com

Abstract
Reducing CO2 emissions is of paramount importance, in order to address the issues of global warming. The negative contribution of Ukrainian metallurgists to atmospheric pollution over the past 20 years amounted to about 1 bln t of carbon dioxide by the year 2020. The solution can be found in the transition to the production of “green steel”, i.e. steel manufactured from direct hydrogen-based reduction iron. Under the conditions of applying plasma heating, high temperatures lead to a rapid melting of pellets, thermal decomposition of oxides occurs, and a reducing agent (hydrogen) is activated. Decomposition of oxides during the heating and melting process accelerates the overall process of pellet reduction to wüstite. And only in that moment, the use of hydrogen for reduction of iron and its deoxidation becomes justified. It was established that forming of a wüstite melt is possible without the use of a reducing agent during plasma melting in an argon atmosphere.
Keywords: direct reduction, pellets, thermal decomposition, kinetics, magnetite melt, dilution with iron, wüstite

Received: 16.09.2024
Received in revised form: 21.10.2024
Accepted: 31.03.2025

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Suggested Citation

V.O. Shapovalov, V.G. Mogylatenko, M.V. Karpets, R.V. Kozin (2025) Producing a wüstite melt by thermal decomposition of hematite pellets with argon plasma. The Paton Welding J., 02, 24-29.

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