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Thermodynamic study of the reduction of titanium magnetite concentrate with solid carbon

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Abstract

In this article, a study of the thermodynamics of reduction of titanium-magnetite concentrate with solid carbon in different stoichiometric proportions (carbon-concentrate 1:1, 2:1 and 2.5:1) in the temperature range of 973 to 1273 K is presented. The Gibbs free energy ΔG° T = f(T), log10 P CO 2/P CO = f(T), and electromotive force (EMF) = f(T) of the probable reaction Fe3O4 + C = 3FeO + CO in the concentrate is studied by the galvanic cell with different reference electrode-air and Ni/NiO. The X-ray analysis indicates different behaviors of the reduction process with solid carbon when 1:1, 2:1, and 2.5:1 ratios of carbon/concentrate were used. The best result is obtained when the ratio is 2.5:1. Some amorphous mass (diatomite) is also observed. The highest concentration of CO (62 to 65 pct) in the gas phase was observed at a carbon-to-concentrate ratio 2:1 and the lowest concentration of CO (40 to 45 pct) at the ratio 1:1.

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References

  1. P.J. Spencer and O. Kubaschewski: CALPHAD, Pergamon Press Limited, United Kingdom, 1978, vol. 2, pp. 147–67.

    Google Scholar 

  2. H.F. Rizzo, R.S. Gordon, and I.B. Cutler: J. Electrochem. Soc: Solid State Sci., 1969, vol. 116 (2), pp. 266–74.

    CAS  Google Scholar 

  3. R.A. Giddings and R.S. Gordon: J. of Am. Ceram. Soc., 1973, vol. 56 (3), pp. 111–16.

    Article  CAS  Google Scholar 

  4. K. Kiukkola and C. Wagner: J. Electrochem. Soc., 1957, vol. 104 (6), pp. 379–86.

    Article  Google Scholar 

  5. M. Farren, S.P. Matthew, and P.C. Hayes: Metall. Trans. B, 1990, vol. 21B, pp. 135–39.

    CAS  Google Scholar 

  6. K. Kashida, K. Goto, and M. Someno: Trans. TMS-AIME, 1968, vol. 242 (1), pp. 82–87.

    CAS  Google Scholar 

  7. K. Ono and J. Moriyama: J. Mining Metall. Inst. Jpn., 1973, vol. 89 (1023), pp. 313–16.

    Google Scholar 

  8. S. Kang and Z. Lei: Trans. Nonferrous Met. Soc. China, 1996, vol. 6 (1), pp. 25–31.

    Google Scholar 

  9. Z. Moser, K. Fitzner, and W. Zakulski: Bulletin Acad. Polonaise Sci., 1975, vol. 23 (3), pp. 243–48.

    CAS  Google Scholar 

  10. E. Jacobsson and E. Rosen: Scand. J. Metall., 1981, vol. 10, pp. 39–43.

    CAS  Google Scholar 

  11. O. Sjoden, S. Seetharaman, and L.I. Staffansson: Metall. Trans., 1986, vol. 17B, pp. 179–84.

    Google Scholar 

  12. P. Vallet and P. Raccah: Mem. Sci. Rev. Met., 1965, vol. 62, p. 1.

    CAS  Google Scholar 

  13. M.N. Karapetjantz: Chimicheskaja Termodynamika, Chimia, Moscow, 1975, pp. 537–53.

    Google Scholar 

  14. S.I. Philippov: Theorie of Metallurgical Processes, Metallurgy, Moscow, 1967, p. 17.

    Google Scholar 

Download references

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  1. University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria

    R. Paunova (Associate Professor)

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  1. R. Paunova
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Paunova, R. Thermodynamic study of the reduction of titanium magnetite concentrate with solid carbon. Metall Mater Trans B 33, 633–638 (2002). https://doi.org/10.1007/s11663-002-0043-0

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  • DOI: https://doi.org/10.1007/s11663-002-0043-0

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