Skip to main content
SpringerLink
Log in

A thermodynamic study of BaO-BaF2-Cr2O3 system fluxes used for dephosphorization of chromium-containing iron melts

  • Published:
Metallurgical and Materials Transactions B Aims and scope Submit manuscript

Abstract

Activities of Cr2O3 in BaO-BaF2-Cr2O3 ternary fluxes are determined using a −Mo|Cr+Cr2O3‖ ZrO2(MgO)‖{Cu-Cr}alloy + (Cr2O3)fluxes|Mo+ solid electrolyte cell in conditions of BaO-BaF2-Cr2O3 system fluxes equilibrium with {Cu-Cr} alloy. Effects of Cr2O3 mole fraction, \(X_{BaO} /X_{BaF_2 } \) ratio, and temperature on activities of Cr2O3 are investigated. The results indicate that Cr2O3 activities increase with an increase of its mole fraction, decrease with an increase of \(X_{BaO} /X_{BaF_2 } \) ratio, and decrease with an increase of system temperature. It can be concluded from XRD and chemical analysis that the isothermal phase diagrams of BaO-BaF2-Cr2O3 fluxes are composed of nine zones at 1523 K and four zones at 1673 K, respectively. Isoactivity diagrams of the ternary system are given here. Additionally, the factors affecting dephosphorization and chromium retention of the fluxes are also investigated.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. T. Matsuo, K. Kamegawa, and T. Sakane: Tetsu-to-Hagané, 1989, vol. 75, pp. 454–61 (in Japanese).

    CAS  Google Scholar 

  2. S. Inoue, T. Usai, K. Yamada, and K. Takahashi: NKK Tech. Rep., 1989, No. 125, pp. 50–57.

  3. T. Hara, F. Tsukihashi, and N. Sano: Tetsu-to-Hagané, 1990, vol. 76, pp. 352–59 (in Japanese).

    CAS  Google Scholar 

  4. C. Nassaralla, R.J. Fruehan, and D.J. Min: Metall. Trans. B, 1991, vol. 22B, pp. 33–38.

    CAS  Google Scholar 

  5. A.K. Mohanty and D.A.R. Kay: Metall. Trans. B, 1975, vol. 6B, pp. 159–66.

    CAS  Google Scholar 

  6. T.K. Inouye, H. Fujiwara, E. Ichise, and M. Iwase: Metall. Mater. Trans. B, 1994, vol. 25B, pp. 695–701.

    CAS  Google Scholar 

  7. Y.J. Liang, Y.C. Che, and X.X. Liu: Thermodynamic Data Handbook of Inorganic Compound, Northeastern University Press, Shenyang, China, 1994, p. 66 (in Chinese).

    Google Scholar 

  8. R.B. Heslop and H. Jones: Inorganic Chemistry, Elsevier Scientific Publishing Company, Amsterdam, Netherlands, 1976, pp. 648 and 723.

    Google Scholar 

  9. T.K. Inouye, H. Fujiwara, and M. Iwase: Metall. Trans. B, 1991, vol. 22B, pp. 475–80.

    CAS  Google Scholar 

  10. D.J. Chakrabarti and D.E. Laughlin: Bull. Alloy Phase Diagrams, 1984, vol. 5, pp. 59–68.

    CAS  Google Scholar 

  11. M. Iwase, E. Ichise, M. Takeuchi, and T. Yamasaki: Trans. Jpn. Inst. Met., 1984, vol. 25 (2), pp. 43–45.

    CAS  Google Scholar 

  12. Y. Goldeev and V.I. Serdyukev: Inorg. Mater., 1967, vol., 3, p. 1440.

    Google Scholar 

  13. M.W. Chase, C.A. Davies, J.R. Dovney, R.A. McDonald, and A.N. Syverud: JANAF Thermochemical Tables, 3rd ed., J. Phys. Chem. Ref. Data, 1985, vol. 14, pp. 331 and 348.

    Google Scholar 

  14. J.F. Elliot: in Electric Furnace Steelmaking, C.R. Tayllor, and C.C. Custer, eds., AIME, New York, NY, 1985, p. 303.

    Google Scholar 

Download references

Author information

Author notes

  1. Zhao-Ping Chen (Associate Professor, Senior Engineer)

    Present address: the Department of Ferrous Metallurgy, School of Materials and Metallurgy, Northeastern University, 110006, Shenyang, People’s Republic of China

Authors and Affiliations

  1. the Department of Ferrous Metallurgy, School of Materials and Metallurgy, Northeastern University, 110006, Shenyang, People’s Republic of China

    Lian-Fu Li (Lecturer), Mao-Fa Jiang (Professor), Wen-Zhong Wang (Professor) & Cheng-Ji Jin (Graduate Student)

  2. the Technology Center, Baosteel, 201900, Shanghai, China

    Zhao-Ping Chen (Associate Professor, Senior Engineer)

Authors
  1. Lian-Fu Li
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Mao-Fa Jiang
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Wen-Zhong Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Cheng-Ji Jin
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Zhao-Ping Chen
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Li, LF., Jiang, MF., Wang, WZ. et al. A thermodynamic study of BaO-BaF2-Cr2O3 system fluxes used for dephosphorization of chromium-containing iron melts. Metall Mater Trans B 30, 451–457 (1999). https://doi.org/10.1007/s11663-999-0078-6

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11663-999-0078-6

Keywords

Search

Navigation