Metallurgical and Materials Transactions B

, Volume 38, Issue 3, pp 357–366 | Cite as

Phosphorus Partition between Liquid Steel and CaO-SiO2-P2O5-MgO Slag Containing Low FeO

  • Somnath Basu
  • Ashok Kumar Lahiri
  • Seshadri Seetharaman
Article

Abstract

CaO-SiO2-FeOx-P2O5-MgO bearing slags are typical in the basic oxygen steelmaking (BOS) process. The partition ratio of phosphorus between slag and steel is an index of the phosphorus holding capacity of the slag, which determines the phosphorus content achievable in the finished steel. The influences of FeO concentration and basicity on the equilibrium phosphorus partition ratios were experimentally determined at temperatures of 1873 and 1923 K, for conditions of MgO saturation. The partition ratio initially increased with basicity but attained a constant value beyond basicity of 2.5. An increase in FeO concentration up to approximately 13 to 14 mass pct was beneficial for phosphorus partition.

References

  1. 1.
    T. Obinata: Proc. Conf. on Steels for Line Pipe and Pipeline Fittings, TMS, Warrendale, PA, 1981, pp. 185–91Google Scholar
  2. 2.
    T.A. Bloom, D.R. Fosnacht, D.M. Haezebrouck: Iron Steelmaker, 1990, vol. 17 (9), pp. 35–41Google Scholar
  3. 3.
    T.P. Colclough: J. Iron Steel Inst., 1923, vol. 107 (1), pp. 267–99Google Scholar
  4. 4.
    T.P. Colclough: Trans. Faraday Soc., 1925−26, vol. 21, pp. 202–23CrossRefGoogle Scholar
  5. 5.
    C.H. Herty Jr.: Trans. AIME, 1926, vol. 73, pp. 1107–34Google Scholar
  6. 6.
    K. Balajiva, A.G. Quarrell, P. Vajragupta: J. Iron Steel Inst., 1946, vol. 153, pp. 115–50Google Scholar
  7. 7.
    K. Balajiva, P. Vajragupta: J. Iron Steel Inst., 1947, vol. 155 (11), pp. 563–67Google Scholar
  8. 8.
    K. Ide, R.J. Fruehan: Iron Steelmaker, 2000, vol. 27 (12), pp. 65–70Google Scholar
  9. 9.
    E.T. Turkdogan, J. Pearson: J. Iron Steel Inst., 1953, vol. 175, pp. 393–401Google Scholar
  10. 10.
    E.T. Turkdogan, J. Pearson: J. Iron Steel Inst., 1953, vol. 173, pp. 217–23Google Scholar
  11. 11.
    W.A. Fischer, H. vom Ende: Stahl und Eisen., 1952, vol. 72, pp. 1398–1408Google Scholar
  12. 12.
    H. Suito, R. Inoue, M. Takada: Trans. ISIJ, 1981, vol. 21 (4), pp. 250–59Google Scholar
  13. 13.
    G.W. Healy: J. Iron Steel Inst., 1970, vol. 208, pp. 664–68Google Scholar
  14. 14.
    J.R. Stubbles: Iron Steelmaker, 1986, vol. 13 (12), pp. 34–35Google Scholar
  15. 15.
    J. Nakashima, H. Goto, S. Ogibayashi, K. Miyazawa, M. Nasu: Proc. 76th Steelmaking Conf., ISS, Warrendale, PA, 1993, pp. 63–68Google Scholar
  16. 16.
    H. Suito, R. Inoue: ISIJ Int., 1995, vol. 35 (3), pp. 258–65Google Scholar
  17. 17.
    Y. Kobayashi, N. Yoshida, K. Nagai: ISIJ Int., 2004, vol. 44 (1), pp. 21–26Google Scholar
  18. 18.
    E.T. Turkdogan: ISIJ Int., 2000, vol. 40 (10), pp. 964–70Google Scholar
  19. 19.
    A.I. van Hoorn, J.T. van Konynenburg, P.J. Kreyger: in Role of Slag in Basic Oxygen Steelmaking Processes, W.K. Lu, ed., McMaster University Press, Toronto, 1976, pp. 2.1–2.26Google Scholar
  20. 20.
    F. Bardenheuer, H. vom Ende, K.G. Speith: Arch. Eisenhüttenwes., 1968, vol. 39(8), pp. 571–76Google Scholar
  21. 21.
    P. Nilles, E.M. Denis: J. Met., 1969, vol. 21 (7), pp. 74–79Google Scholar
  22. 22.
    P. Nilles, E.M. Denis, F. Merken, P. Dauby: CRM Metall. Rep., 1971, vol. 27, pp. 3–10Google Scholar
  23. 23.
    R. Baker: British Steel Corporation Report CAPL/SM/A/31/74, British Steel Corporation, England, 1974Google Scholar
  24. 24.
    T. Tamura, T. Nagasaka, M. Hino: ISIJ Int., 2004, vol. 44 (3), pp. 476–81Google Scholar
  25. 25.
    E.T. Turkdogan: Fundamentals of Steelmaking, The Institute of Materials, London, 1996Google Scholar
  26. 26.
    H. Okuda, M. Suitoh, H. Take, F. Sudo: Proc. 71st Steelmaking Conf., ISS, Warrendale, PA, 1988, pp. 178–85Google Scholar
  27. 27.
    S. Ban-ya: ISIJ Int., 1993, vol. 33 (1), pp. 2–10Google Scholar
  28. 28.
    C. Wagner: Acta Metall., 1973, vol. 21 (9), pp. 1297–1303CrossRefGoogle Scholar
  29. 29.
    Steelmaking Data Sourcebook, The Japan Society for the Promotion of Science, Gordon and Breach Science Publishers, Tokyo, 1988Google Scholar
  30. 30.
    V.H. Knuppel, F. Oeters: Stahl Eisenhüttenwes., 1961, vol. 81 (22), pp. 1437–49Google Scholar
  31. 31.
    M. Hasegawa, M. Iwase, K. Wakimoto, A. McLean: Scand. J. Metall., 2003, vol. 32 (1), pp. 47–52CrossRefGoogle Scholar
  32. 32.
    M. Swinnerton: Master of Engineering Thesis, University of Wollongong, Wollongong, Australia, 2005Google Scholar

Copyright information

© THE MINERALS, METALS & MATERIALS SOCIETY and ASM INTERNATIONAL 2007

Authors and Affiliations

  • Somnath Basu
    • 1
  • Ashok Kumar Lahiri
    • 2
  • Seshadri Seetharaman
    • 3
  1. 1.Research & DevelopmentTata SteelJamshedpurIndia
  2. 2.Indian Institute of ScienceBangaloreIndia
  3. 3.Royal Institute of TechnologyStockholmSweden

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