STUDY OF THE MAGNETITE OXIDATION
https://doi.org/10.17073/0368-0797-2016-10-735-739
Abstract
To study the process of magnetite oxidation the experiments had been conducted on large single crystals of magnetite having octahedral form and retrieved from chlorite schist in Shabrovski talc mine (the Middle Urals). Using the method of diff erential thermal curves obtained by diff erential heating of samples the good reproducibility of the processes that occur during oxidative roasting magnetite was shown. The mechanism of the magnetite oxidation and temperature ranges of exothermic and endothermic reactions in various stages of magnetite oxidation was considered. Using the method of separated standard the unknown thermal eff ect of magnetite oxidation was determined in accordance with the standard thermal effect (CaCO3 ) and the values obtained in the areas of the fi gures in thermograms concluded between the diff erential heating curve and the axis of time proportional to the thermal eff ects of the standard and the test substances (Fe3O4 ). The obtained results are of some interest. Knowing the temperature intervals of magnetite oxidation, it can be taken into account in establishing the mode of burning heat source for technological zones in conveyor type roasting machines. This achieves optimization of the fi ring thermal regime and reduction in specifi c fuel consumption
About the Authors
B. P. Yur’ev
Ural Federal University named after the fi rst President of Russia Boris Yeltsin, Russia, Ekaterinburg
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair of “Thermal Physics and Informatics in Metallurgy”
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair of “Thermal Physics and Informatics in Metallurgy”
V. A. Goltsev
Ural Federal University named after the fi rst President of Russia Boris Yeltsin, Russia, Ekaterinburg
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair of “Thermal Physics and Informatics in Metallurgy”
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair of “Thermal Physics and Informatics in Metallurgy”
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Review
For citations:
Yur’ev B.P., Goltsev V.A. STUDY OF THE MAGNETITE OXIDATION. Izvestiya. Ferrous Metallurgy. 2016;59(10):735-739. (In Russ.) https://doi.org/10.17073/0368-0797-2016-10-735-739
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