Electrometallurgy Today, 2023, №03



2023 №03 (02)

DOI of Article 10.37434/sem2023.03.03

2023 №03 (04)

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Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2023, #3, 13-18 pages

Thermal decomposition of hematite pellets at heating by argon plasma

V.O. Shapovalov¹, V.G. Mogylatenko², M.V. Karpets², R.V. Kozin¹

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute». 37 Pobedy Prosp., 03056, Kyiv, Ukraine. E-mail: vmogilatenko@gmail.com

Abstract
Global warming raised the issue of reducing greenhouse gas emissions in any industrial processes, including metallurgy. Solution of this problem in the metallurgical field is associated with direct reduction of iron ore with hydrogen and application of highly concentrated energy sources for heating, in particular plasma. At high temperatures, oxides can decompose in the liquid oxide melt even before hydrogen is used for reduction. It enables producing the wustite melt by oxygen content without hematite and magnetite. The conclusions reached were confirmed by thermodynamic calculations and results of studying the kinetics of decomposition of pellet oxides in plasma-arc melting in argon atmosphere. 18 Ref., 3 Tabl., 5 Fig.
Keywords: iron oxides, thermal decomposition, dissociation thermodynamics, decomposition kinetics, plasma-arc melting, wustite melt

Received 21.06.2023

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