BEHAVIOR OF MAGNETITE ORES OF KOVDOR DEPOSIT IN SINTERING PROCESS
https://doi.org/10.17073/0368-0797-2016-5-354-356
Abstract
The peculiarity of Kovdor deposit ores is the presence of magnetite of heterogeneous structure when the isomorphic impurities present in celonite matrix as separate spinel phases: FeAl2O4 , MgFe2O4 , TiFe2O4 . The authors have investigated the process of phase transformations of magnetite crystals of heterogeneous structure in conditions close to sinter. In the range of 1100 – 1300 °C in reducing environment occurs the dissolution of magnetite crystals in two oxide phases: magnetite and wustite with redistribution of isomorphic impurities between them. At the same time the silicates with high melting points are formed in the joints of crystals of oxide phases with the host rocks. Therefore, the composition of oxide and silicate phases is the cause of the previously established retardation of the process of melt formation during iron ore sintering with the participation of magnetite concentrate of Kovdor deposit.
About the Authors
S. A. Pisarev
National University of Science and Technology “MISIS” (MISIS), Moscow, Russia
Russian Federation
Russian Federation
MA Student of the Chair “Energy-efficient and Resourcesaving Industrial Technologies”
D. S. Kurenkov
National University of Science and Technology “MISIS” (MISIS), Moscow, Russia
Russian Federation
Russian Federation
MA Student of the Chair “Energy-efficient and Resource-saving Industrial Technologies”
T. Ya. Malysheva
National University of Science and Technology “MISIS” (MISIS), Moscow, Russia
Russian Federation
Russian Federation
Cand. Sci. (Geol.-Mineralogical), Professor of the Chair “Energy-efficient and Resource-saving Industrial Technologies”
References
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4. Malysheva T.Ya., Pavlov R.M., Mansurov N.R., Detkova I.V. Effect of natural ore formation on mineral composition and cold strength of iron ore fluxed agglomerates. Izvestiya VUZov. Chernaya metallurgiya = Izvestiya. Ferrous Metallurgy. 2015, vol. 58, no. 3, pp. 180–185. (In Russ.).
Review
For citations:
Pisarev S.A., Kurenkov D.S., Malysheva T.Ya. BEHAVIOR OF MAGNETITE ORES OF KOVDOR DEPOSIT IN SINTERING PROCESS. Izvestiya. Ferrous Metallurgy. 2016;59(5):354-356. (In Russ.) https://doi.org/10.17073/0368-0797-2016-5-354-356
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