Metallurgical Transactions B

, Volume 15, Issue 1, pp 127–133 | Cite as

Oxidation of nickel sulfide

  • Z. Asaki
  • K. Hajika
  • T. Tanabe
  • Y. Kondo
Physical Chemistry


The oxidation of nickel sulfide whose atomic fraction of sulfur,xs, is 0.40 to 0.44 was studied in a mixed O2-N2 gas stream at 923, 973, and 1023 K. The oxygen partial pressure was maintained at 2.0 x 104 Pa. In the oxidation of nickel sulfide ofxs = 0.40 and 0.41, a dense NiO layer was formed on the sulfide surface without the evolution of SO2 gas, because of the low sulfur activity. Diffusion of nickel within the inner sulfide core toward the surface controlled the oxidation rate during the first one minute of oxidation. Subsequently, the oxidation rate was controlled by the diffusion of nickel through the formed NiO layer. In the oxidation of nickel sulfide ofxs = 0.44 at 973 and 1023 K, the reaction proceeded irregularly to the interior of the sulfide core with the evolution of SO2 gas, and a porous oxide layer was formed, due to the high sulfur activity of nickel sulfide. For the same reason, this oxidation was also accompanied by the dissociation of nickel sulfide. Under the experimental conditions ofxs = 0.42, 1023 K and xs = 0.44,923 K, the oxidation started with weight increase and without the evolution of SO2 gas, and in the subsequent stage the weight decreased and SO2 gas was evolved.


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  1. 1.
    I. Kushima and N. Asano:Nippon Kogyo Kaishi, 1957, vol. 73, pp. 103–08.Google Scholar
  2. 2.
    I. Kushima and N. Asano:Nippon Kogyo Kaishi, 1957, vol. 73, pp. 239–42.Google Scholar
  3. 3.
    J.G. Dunn and C.E. Kelly:J. Thermal Anal., 1977, vol. 12, pp. 43–52.CrossRefGoogle Scholar
  4. 4.
    T. Rosenqvist:J. Iron and Steel Inst., 1954, vol. 176, pp. 37–57.Google Scholar
  5. 5.
    R.Y. Lin, D.C. Hu, and Y.A. Chang:Metall. Trans. B, 1978, vol. 9B, pp. 531–38.Google Scholar
  6. 6.
    Z. Asaki, K. Matsumoto, T. Tanabe, and Y. Kondo:Metall. Trans. B, 1983, vol. 14B, pp. 109–16.Google Scholar
  7. 7.
    G. Kullerud and R. A. Yund:J. Petrology, 1962, vol. 3, pp. 126–75.Google Scholar
  8. 8.
    R.C. Sharma and Y.A. Chang:Metall. Trans. B, 1980, vol. 11B, pp. 139–46.Google Scholar
  9. 9.
    H. Tsukada, Z. Asaki, T. Tanabe, and Y. Kondo:Metall. Trans. B, 1981, vol. 12B, pp. 603–09.Google Scholar
  10. 10.
    O. Kubaschewski, E. LL. Evans, and C.B. Alcock:Metallurgical Thermochemistry, 4th ed., Pergamon Press, London, 1967, pp. 426–427.Google Scholar
  11. 11.
    J. Szekely and N.J. Themelis:Rate Phenomena in Process Metallurgy, Wiley-Interscience, New York, NY, 1971, p. 424.Google Scholar
  12. 12.
    B.D. Bastow and G.C. Wood:Oxidation of Metals, 1975, vol. 9, pp. 473–96.CrossRefGoogle Scholar
  13. 13.
    B.C.H. Steele:Physical Chemistry of Process Metallurgy: The Richardson Conference, Inst. of Min. and Metall., London, 1974, pp. 1–9.Google Scholar
  14. 14.
    R.C. Weast and M.J. Astle:CRC Handbook of Chemistry and Physics, 63rd ed., CRC Press, Boca Raton, 1982, p. B-124.Google Scholar
  15. 15.
    C. Wagner:Z. Phys. Chem., 1933, vol. 21, p. 25.Google Scholar
  16. 16.
    K. Fueki and J. B. Wagner, Jr.:J. Electrochem. Soc, 1965, vol. 112, pp. 384–88.CrossRefGoogle Scholar
  17. 17.
    L. Himmel, R. F. Mehl, and C.E. Birchenall:Trans. AIME, 1953, vol. 197, pp. 827–43.Google Scholar
  18. 18.
    M.T. Shim and W.J. Moore:J. Chem. Phys., 1957, vol. 26, pp. 802–04.CrossRefGoogle Scholar
  19. 19.
    R. Linderand A. Akerström:Discussion Faraday Soc, 1957, vol. 23, p. 133.CrossRefGoogle Scholar
  20. 20.
    M.L. Volpe and J. Reddy:J. Chem. Phys., 1970, vol. 53, pp. 1117–25.CrossRefGoogle Scholar

Copyright information

© The Metallurgical of Society of AIME 1984

Authors and Affiliations

  • Z. Asaki
    • 1
  • K. Hajika
    • 2
  • T. Tanabe
    • 1
  • Y. Kondo
    • 1
  1. 1.Department of MetallurgyKyoto UniversityKyotoJapan
  2. 2.Kobe Steel CorporationKobeJapan

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