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The stability of refractory oxides in sodium-rich environments

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Abstract

The infiltration of molten electrolyte and sodium is known to deteriorate the refractory in aluminum electrolysis. The mineralogical changes due to reactions with molten fluorides have previously been described throughly, while the effect of sodium has not been considered in detail. This paper presents an experimental study of the chemical stability of some refractory materials in sodium-rich environments. The materials were exposed to sodium vapor at 800°C for 4 hours. The mineralogical transformations and deterioration of the materials due to reactions with sodium were analyzed by x-ray diffraction and optical and electron microscopy.

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References

  1. O.-J. Siljan, C. Schøning and T. Grande, JOM, 54 (5) (2002), pp. 46–54, 63.

    CAS  Google Scholar 

  2. O.-J. Siljan, “Sodium Aluminum Fluoride Attack on Alumino-Silicate Refractories—Chemical Reactions and Mineral Phase” (Dr. Ing. thesis, IUK-thesis: 61, Norwegian Technical University, Trondheim, Norway, 1990).

    Google Scholar 

  3. J. L. Rutlin, “Chemical Reactions and Mineral Phase Formation by Sodium Aluminium Fluoride Attack on Alumino-Silicate and Anorthite Based Refractories” (Dr. Ing. thesis, IUK-thesis: 90 Norwegian University of Science and Technology, Trondheim, Norway, 1998).

    Google Scholar 

  4. M. Sørlie and H. A. Øye, Cathodes in Aluminium Electrolysis (Düsseldorf, Germany: Aluminium Verlag, 1994).

    Google Scholar 

  5. C. Allaire, J. Am. Ceram. Soc., 75 (8) (1992), pp. 2308–2311.

    Article  CAS  Google Scholar 

  6. R. A. Robbie, B. S. Hemingway and J. R. Fisher, Geological Survey Bulletin 1452, (Washington, D.C.: United States Printing Office, 1978).

    Google Scholar 

  7. R. C. Weast, CRC Handbook of Chemistry and Physics (Boca Raton, FL: CRC Press, 1980).

    Google Scholar 

  8. O.-J. Siljan, C. Schøning and T. Grande, Aluminium, 77 (10) (2001) pp 809–814.

    CAS  Google Scholar 

  9. F. Brunk, Advances in Refractories for the Metallurgical Industries III (Quebec, Canada: CIM, 1999).

    Google Scholar 

  10. J. L. Rutlin and T. Grande, Light Metals 1999, ed. C.E. Eckert (Warrendale, PA: TMS 1999), pp. 431–436.

    Google Scholar 

  11. H. A. Øye et al., Aluminium 72 (12) (1996), pp. 918–924.

    Google Scholar 

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Authors and Affiliations

  1. SINTEF Materials and Chemistry in Trondheim, Norway

    Christian Schøning

  2. Department of Materials Science and Technology at the Norwegian University of Science and Technology in Trondheim, Norway

    Tor Grande

Authors
  1. Christian Schøning
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  2. Tor Grande
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Schøning, C., Grande, T. The stability of refractory oxides in sodium-rich environments. JOM 58, 58–61 (2006). https://doi.org/10.1007/s11837-006-0011-2

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  • DOI: https://doi.org/10.1007/s11837-006-0011-2

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