DEVELOPMENT OF THE PRINCIPLES OF ENERGY EFFICIENT PROCESSES OF METALLIZATION USING THERMODYNAMIC MODELING
https://doi.org/10.17073/0368-0797-2016-4-237-244
Abstract
The paper presents the results of iron solid-phase reduction study obtained by means of TERRA software package. Investigations were carried out in two stages: the experiment on the model elementary system and the study of iron reduction from iron ore by the coals of various grades. As a result of thermodynamic modeling in the first stage of oxidation-reduction conditions study in Fe – C – O system there were some boundaries of reducing, transition and oxidizing zones and the corresponding values of the ratio of oxygen to the amount of carbon in that system. Studying of coal reduction properties by calculating of equilibrium compositions in a temperature range of 373–1873 K with TERRA software package usage showed that the composition of a gas phase in the given temperature range is almost the same for all types of coals and differs according to the amount of released volatiles. The sharp increase of gas volume begins at 673 K and ends at 1073 K. The results of thermodynamic modeling in the second phase of the experiment enabled to determine the optimal CC coals consumption (low-caking), D (long-flame), 2B (lignite) required for a complete iron reduction from iron ore of the specified composition.
Keywords
About the Authors
O. I. Nokhrina
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair of Ferrous Metallurgy
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair of Ferrous Metallurgy
I. D. Rozhikhina
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair of Ferrous Metallurgy
I. A. Rybenko
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair of Applied Information Technology and Programming
I. E. Khodosov
Siberian State Industrial University, Novokuznetsk, Russia
Russian Federation
Head of the Laboratory of the Chair of Ferrous Metallurgy
Russian Federation
Head of the Laboratory of the Chair of Ferrous Metallurgy
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Review
For citations:
Nokhrina O.I., Rozhikhina I.D., Rybenko I.A., Khodosov I.E. DEVELOPMENT OF THE PRINCIPLES OF ENERGY EFFICIENT PROCESSES OF METALLIZATION USING THERMODYNAMIC MODELING. Izvestiya. Ferrous Metallurgy. 2016;59(4):237-244. (In Russ.) https://doi.org/10.17073/0368-0797-2016-4-237-244
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