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2021 №02 (03) DOI of Article
10.37434/sem2021.02.04
2021 №02 (05)

Electrometallurgy Today 2021 #02
SEM, 2021, #2, 26-31 pages

Chemical equilibrium IN Fe–O–H system at high temperatures

Authors
M.M. Gasik1, M.I. Gasik2
1Aalto University. 00076, Aalto, Espoo, Finland. E-mail: michael.gasik@aalto.fi
2National Metallurgical Academy of Ukraine. 4 Gagarin Prosp., 49000, Dnipro, Ukraine

Abstract
The issue of thermodynamic equilibrium in Fe–O–H system at the temperatures of steel-melting processes (1600 °С) was considered. The historical data array, features of experiments on obtaining them and their drawbacks were analyzed. A new more correct calculation of hydrogen and oxygen concentration in liquid iron and in the gas phase was performed. New coeffi cients of activity were calculated, proceeding from precise thermodynamic principles, unlike the earlier used artifi cial models based on interaction parameters. Ref. 19, Fig. 6.
Keywords: thermodynamics; iron; hydrogen; oxygen; solutions; activity; equilibrium

Received 26.04.2021

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