Electrometallurgy Today, 2020, №01



2020 №01 (04)

DOI of Article 10.37434/sem2020.01.05

2020 №01 (06)

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Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2020, #1, 39-45 pages

Research of the influence of thermoanthracite calcination modes for the production of continuous self-baking electrodes for ore reducing furnaces

S.V. Kutuzov¹, V.V. Derkach¹, M.I. Gasik², A.P. Gorobets², M.M. Gasik³

¹Private Joint Stock Company Ukrainian Graphite. 20 Northern Highway, 69600, Zaporozhye, Ukraine. Е-mail: tehnology@ukrgrafit.com.ua
²National Metallurgical Academy of Ukraine. 4 Gagarina Ave., 49000, Dnipro, Ukraine. E-mail: tehnosplavy@ua.fm
³Aalto University. Finland, Espoo, PO BOX 11000 FI-00076. E-mail: michael.gasik@aalto.fi

Abstract
The process of graphitization of anthracite as a carbon component of self-baking electrodes is considered. Experimental studies of the physical properties of thermoanthracite by thermogravimetry and IR spectroscopy in the temperature range 400…1400 °C were performed. Regression models of the relationship between the structure of thermoanthracite, strength, thermal conductivity and resistivity and the temperature regime of anthracite calcination were created. Ref. 9, Tabl. 4, Fig. 7.
Keywords: thermoanthracite; self-baking electrodes; thermophysical characteristics; dynamic thermogravimetry; IR spectroscopy; crystallites; density; electrical conductivity; phase composition

Received 11.02.2020

References

1. Gasik, M.I. (1984) Electrodes of ore reduction furnaces. Moscow, Metallurgiya [in Russian].
2. Stach, E., Mackowsky, M.-Th., Teichmüller, M. et al. (1978) Coal petrology. Ed. I.V. Eremin, N.P. Grechishnikov. Moscow, Mir [in Russian].
3. Drozdnik, I.D., Kaftan, Yu.S., Dolzhanskaya, Yu.B. et al. (2002) Anthracite: Reserves. Production. Properties. Application. Koks i Khimiya, 12, 2–8 [in Russian].
4. Gasik, M.M., Gasik, M.I., Urazlina, O.Yu., Kutuzov, S.V. (2006) Precision thermokinetic studies of transformations in Donetsk anthracite when it is calcined in air and argon in the range of 100–1400 °С. Metallurgicheskaya i Gornorudnaya Promyshlennost, 1, 26–30 [in Russian].
5. Gasik, M.M., Gasik, M.I., Petrov, B.F. et al. (2006) Computer modeling and pilot development of the technology of onestage calcination of anthracite in an electrocalciner. Ibid., 3, 27–30 [in Russian].
6. Brandtzag, S.R., Linda, H., Oye, H.A. (1983) Structural changes in graphite by heat treatment. Light Metals. In: Proc. Techn. Ses. 112 AIME Annu. Meet. (March 6–10, 1983, Atlanta), 711–725.
7. Pusz, S., Kwiecinska, B.K., Duber, S. (2003) Textural transformation of thermally treated anthracites. Int. J. Coal Geol. 1-2, 115-123. https://doi.org/10.1016/S0166-5162(03)00024-7
8. Lakomsky, V.I., Kutuzov, S.V. (2006) On temperature dependence of thermoanthracite electrical resistance. Advances in Electrometallurgy, 1, 35–37.
9. Gasik, M.M., Gasik, M.I., Urazlina, O.Yu. (2004) Modeling of the thermal and electric modes of operation of the electrocalcinator during the thermal treatment of thermoanthracite. Metallurgicheskaya i Gornorudnaya Promyshlennost, 5, 18–23 [in Russian].

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