Advertisement

Refractories and Industrial Ceramics

, Volume 40, Issue 11–12, pp 529–533 | Cite as

Effect of antioxidants on the properties of unfired carbon-bearing refractories

  • E. V. Krivokorytov
  • N. A. Makarov
  • N. V. Kononov
  • B. I. Polyak
Research

Abstract

The effect of antioxidants on the properties of periclase-carbon and aluminum-periclase-carbon refractories is considered. It is shown that the introduction of aluminum and crystalline silicon into the composition of the refractory mixture decreases the degree of burning-out of silicon in 3-h heat treatment at 1200°C. In addition, the thermoreactive binder based on a resorcinol oligomer used for the production of refractory specimens has a favorable effect on the preservation of carbon in the refractory due to the activation of the oxidation of the coke formed in polymerization of the oligomer. These factors should improve the slag-and metal-resistance of the refractory, its service parameters, and the quality of the final product.

Keywords

Decarbonization Open Porosity Boron Carbide Polymer Binder Ultimate Compressive Strength 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    S. G. Dolgikh, A. K. Karklit, and A. V. Kakhmurov,“Bauxite-based refractories for steel degassing,”Ogneupory, No. 2, 31–33(1993).Google Scholar
  2. 2.
    A. M. Chuklai, V. E. Gel’fenbein, and V. P. Semyannikov,“Conversion of the technology of refractories in the MgO — A12O3 — C system,”Ogneup. Tekh. Keram., No. 10, 35–37 (1997).Google Scholar
  3. 3.
    I. G. Ochagova,“Lime-periclase (dolomite) lining for ladles for casting and out-of-furnace treatment of steel,”Ogneupory, Nos. 7–8,34–38(1992).Google Scholar
  4. 4.
    G. I. Antonov,“Unfired periclase-carbon refractories on phenol binder,”Ogneup. Tekh. Keram., No. 9, 22–26 (1998).Google Scholar
  5. 5.
    G. D. Semchenko,“Physicochemical aspects of protecting graphite from oxidation in heat treatment of mixtures on ethylsilicate binder,”Ogneup. Tekh. Keram., No. 11, 20–23 (1998).Google Scholar
  6. 6.
    A. I. Snegirev and A. A. Fotiev,“Experience in using graphite-bearing crucibles in nonferrous metallurgy,”Ogneup. Tekh. Keram., No. 9,25–28(1995).Google Scholar
  7. 7.
    J. Piret,“European tendencies and new developments of refractory materials for steel works,”Interceram.,40(3), 179–183 (1991).Google Scholar
  8. 8.
    E. Aoki, M. Isimoto, and E. Kakimoto,“Results of tests of MgO — C bricks in the slag line of a ladle furnace,”Taikabutsu,37(9) (332), 51–56 (545–550) (1985).Google Scholar
  9. 9.
    M. Naibu, A. Matsuo, S. Miyagava, et al.,“Refractories for ladle furnace,”Taikabutsu,38, 29–35 (767–773) (1986).Google Scholar
  10. 10.
    B. Brezny and J. Petetz,“Reactivity of periclase with carbon in magnesia — graphite refractories,” in:Unitecr ’89. Proceedings, Vol. 1, Anaheim, California, 1989, pp. 369–395.Google Scholar
  11. 11.
    E.V. Krivokorytov, A. V. Ivanov, R. I. Molotova, et al.,“Use of phenol-free polymer binder for the production of ceramic materials,” in:Abs. Rep. 6thInt. Conf. on the Chemistry and Physical Chemistry of Oligomers, Vol. 1 [in Russian], Kazan (1997), p. 184.Google Scholar
  12. 12.
    B. I. Polyak, E. V. Krivokorytov, N. V. Kononov, et al.,“Ecologically safe polymer binder for carbon-bearing refractories and technical ceramics,”Steklo Keram., No. 8, 32–33 (1998).Google Scholar
  13. 13.
    E. V. Krivokorytov, N. V. Kononov, V. S. Osipchik, and B. I. Polyak,“Unfired periclase-carbon refractories on a thermoreactive polymer binder,”Ogneup. Tekh. Keram., Nos. 1–2, 19–24(1999).Google Scholar

Copyright information

© Kluwer Academic/Plenum Publishers 2000

Authors and Affiliations

  • E. V. Krivokorytov
    • 1
  • N. A. Makarov
    • 1
  • N. V. Kononov
    • 1
  • B. I. Polyak
    • 1
  1. 1.D. I. Mendeleev Russian Chemical Engineering UniversityMoscowRussia

Personalised recommendations