Chapter 20. Corrosion of Silica and Mullite Refractories Used in Glass Furnaces Under 100% Oxy-Firing Process

  1. John B. Wachtman Jr
  1. J. Boillet1,
  2. W. Kobillet2,
  3. W. J. Snyder3,
  4. C. A. Paskocimas4,
  5. E. R. Leite4,
  6. E. Longo4 and
  7. J. A. Varela5

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314814.ch20

A Collection of Papers Presented at the 56th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 17, Issue 2

A Collection of Papers Presented at the 56th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 17, Issue 2

How to Cite

Boillet, J., Kobillet, W., Snyder, W. J., Paskocimas, C. A., Leite, E. R., Longo, E. and Varela, J. A. (1996) Corrosion of Silica and Mullite Refractories Used in Glass Furnaces Under 100% Oxy-Firing Process, in A Collection of Papers Presented at the 56th Conference on Glass Problems: Ceramic Engineering and Science Proceedings, Volume 17, Issue 2 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314814.ch20

Author Information

  1. 1

    Companhia Vidraria Santa Marina, Sã Paulo, Spain

  2. 2

    White Martins Gases Industriais S.A., São Paulo, Spain

  3. 3

    Praxair, Inc., Tarrytown, New York

  4. 4

    Universidade Federal de São Carlos, Sã Paulo, Spain

  5. 5

    Universidade Estadual Paulista, Araraquara, Spain

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1996

ISBN Information

Print ISBN: 9780470375419

Online ISBN: 9780470314814

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Keywords:

  • oxy-fuel flames;
  • white martins gases industriais;
  • alkaline attack;
  • industrial glass melting furnace;
  • scanning electron microscopy

Summary

Oxy-fuel flames have been used increasingly to boost the pull rate of glass melting furnaces. The process allows improvement in productivity with very low capital investment followed by a reduction in energy costs. If proper operational conditions are attained, an important reduction of environmental impact due to NOx, and particulate emission rates can be achieved. White Martins Gases Industriais S.A. (affliated with Praxair, Inc.) and Companhia Vidraria Santa Marina (Saint Gobain Group) tested the convsive behavior of silica and mullite refractories in an oxy-oil fired industrial glass melting fume. XRD, SEM, mercury porosimetry, and X-ray fluorescence were used to characterize the phases and the extent of alkaline attack. The results showed that the performance of silica and mullite refractories decreased in atmospheres promoted by oxy-oil combustion process. This is because of the intensified action of alkalis leading the formation of silicates with low melting points in those refractories.