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Feasibility study on preparation of magnesium titanate in carbonthermic reduction of vanadium titanomagnetite concentrates

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Effect of temperature and Mg:Ti ratio on phase composition and microstructure of reduced pellets was investigated to verify the feasibility of preparation of magnesium titanate by adding MgO in carbonthermic reduction of the vanadium titanomagnetite concentrates (VTC). Thermodynamic analysis results showed that magnesium titanate is more easily generated than FeTi2O5 or TiO2 by the reaction of FeTiO3 and MgO under the reductive atmosphere, which was confirmed by the discovery of magnesium titanate at roast experiment. It was found that the optimum conditions for reduction of VTC pellets were temperature of 1250 ºC and Mg:Ti ratio of 2, and the main phases of reduction product were metallic Fe and magnesium titanate (Mg2TiO4). However, trace iron impurities in Mg2TiO4 particles were found by energy-dispersive spectroscopy (EDS), so further purification is required.
Rocznik
Strony
417--425
Opis fizyczny
Bibliogr. 15 poz., rys., tab.
Twórcy
autor
  • School of Civil and Resource, University of Science and Technology Beijing, Beijing, 100083 PR China
autor
  • School of Civil and Resource, University of Science and Technology Beijing, Beijing, 100083 PR China
autor
  • School of Civil and Resource, University of Science and Technology Beijing, Beijing, 100083 PR China
  • School of Civil and Resource, University of Science and Technology Beijing, Beijing, 100083 PR China
  • School of Civil and Resource, University of Science and Technology Beijing, Beijing, 100083 PR China
Bibliografia
  • BALE, C.W., BELISLE, E., CHARTRAND, P., DECTEROV, S. A., ERIKSSON, G., HACK, K., JUNG, I.H., KANG, Y.B., MELANCON, J., PELTON, A.D., ROBELIN, C., PETERSEN, S., 2008. FactSage thermochemical software and databases — recent developments. Petersen: Calphad. 33, 296-311.
  • CHEN, D.S., SONG, B., WANG, L.N., QI, T., WANG, W. J., 2011. Direct reduction and enhanced reduction of vanadium- bearing titanomagnetite concentrates. J. Univ. Sci. Technol. B. 33, 1331-1336 (In Chinese).
  • CHEN, S.Y., CHU, M.S., 2014. Metalizing reduction and magnetic separation of vanadium titano-magnetite based on hot briquetting. Int. J. Miner. Met. Mater. 21, 225-233.
  • CHEN, S.Y., TANG, Y., CHU, S.M., GUO, P.H., HANG, Y.T., 2013. Reduction progress of vanadium titano-magnetite with coal powder. Chin. J. Peocess. 2, 236-240 (In Chinese).
  • DU, X.H., JIE, B., LOU, T.P., 2012. Research on solid reduction of vanadium-titanium magnetite. Northeast. Univ. 5, 685-688 (In Chinese).
  • FU, W.G., WE, Y.C, XIE, H.E., 2011. Development of intensified technologies of vanadium-bearing titanomagnetite smelting. J. Iron. Steel. Res. Int. 18, 7-10.
  • HU, T., LV, X.W., BAI, C.G., LUN, Z.G., QIU, G.B., 2014. Reduction behavior of panzhihua titanomagnetite concentrates with coal. Int. J. Miner. Met. Mater. 21, 252-260.
  • HUANG, Y., ZHOU, X.H., 2005. The synthesis of MgTiO3 by solid state reaction and characteristics with addition. J. Funct. Mater. 36, 689-691.
  • LIU, S.S., GUO, Y.F., QIU, G.Z., JIANG, T., 2014. Solid-state reduction kinetics and mechanism of pre-oxidized vanadium−titanium magnetite concentrate. Trans. Nonferrous. Met. Soc. Chin. 10, 3372-3377.
  • LV, X., LUN, Z., YIN, J., BAI, C., 2013. Carbothermic reduction of vanadium titanomagnetite by microwave irradiation and smelting behavior. ISIJ. Int. 53, 1115-1119.
  • OVCHAR, O.V., V'YUNOV, O.I., DURILIN, D.A., STUPIN, Y.D., BELOUS, A.G., 2004. Synthesis and microwave dielectric properties of MgO-TiO2-SiO2 ceramics. Inorg. Mater. 40, 1116-1121.
  • PAUNOVA, R., 2002. Thermodynamic study of the reduction of titanium magnetite concentrate with solid carbon. Metall. Mater. Trans. B. 33, 633-638.
  • SREEDJAR, K., PAVASKAR, N.R., 2002. Synthesis of MgTiO3 and Mg4Nb2O9 using stoichiometrically excess MgO. Mater. Lett. 53, 452-455.
  • SUN, Y., ZHENG, H., DONG, Y., JIANG, X., SHEN, Y., SHEN, F., 2015. Melting and separation behavior of slag and metal phases in metallized pellets obtained from the direct-reduction process of vanadium-bearing titanomagnetite. Int J. Miner. Process. 142, 119-124.
  • ZHAO, L.S., WANG, L.N., CHEN, D.S., ZHAO, H.X., LIU, Y.H., TAO, Q.I., 2015. Behaviors of vanadium and chromium in coal-based direct reduction of high-chromium vanadium-bearing titanomagnetite concentrates followed by magnetic separation. Nonferrous Met. Soc. China. 25, 1325-1333.
Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-37d43720-b859-4e57-9fe1-e8153aac8af8
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