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X-Ray Diffraction Analysis of 12 CaO. 7 Al2O3 Polymorphs

  • A. Derdacka-Grzymek
  • Z. Konik
  • J. Iwanciw
  • M. Pyzalski
  • A. Stok

Abstract

As it results from the literature data, the problem of 12 CaO. 7 Al2O3 polymorphism has not been fully explained until now. The authors have obtained some new informations concerning 12 CaO. 7 Al2O3 polymorphs and polymorphic transitions1,2,3. These data allow to improve the production of self-disintegrating sinter consisting of 12 CaO. 7 Al2O3 and calcium orthosilicate — the semi-product in J. Grzymek’s alumina technology4,5.

Keywords

Light Metal Calcium Aluminate Polymorphic Transition Metallurgical Slag Anisotropic Phase 
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.

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References

  1. 1.
    J. Grzymek, A. Derdacka-Grzymek, Z. Konik, M. Gawlicki, and A. Stok, The complex production of aluminium oxide and iron from laterite raw materials applying the calcium aluminates polymorphism, in: “Light Metals 1985”, H. O. Bohner, ed., AIME New York (1985).Google Scholar
  2. 2.
    J. Grzymek, A. Derdacka-Grzymek, Z. Konik, A. Stok, M. Pyzalski, and J. Iwanciw, Some physicochemical properties of 12 CaO. 7 Al2O3 phase in relation to Al2O3 production from self-desintegrating sinters, in: “Light Metals 1987”, R. D. Zabreznik, ed., AIME, Denver (1987).Google Scholar
  3. 3.
    J. Grzymek, A. Derdacka-Grzymek, Z. Konik, M. Pyzalski, A. Stok, and J. Iwanciw, The effect of synthesis and cooling conditions on phase properties of 12 CaO. 7 Al2O3, in: “Proceedings of 8th International Congress on Chemistry of Cement”, Rio de Janeiro, Vol. 4:401 (1986).Google Scholar
  4. 4.
    J. Grzymek, A. Derdacka-Grzymek, Z. Konik, W. Grzymek, Methods for obtaining iron, alumina, titania and binders from metallurgical slags and from red mud remaining in the Bayer method, in: “Light Metals 1982”, J. E. Andersen, ed., AIME, Dallas (1982).Google Scholar
  5. 5.
    A. Derdacka-Grzymek, J. Grzymek, M. Gawlicki, Z. Konik, and A. Stok, The complex technologies to get aluminium oxide, iron, titanium oxide and cementing binders from clay materials, Mineral.Records 41: 201 (1986).Google Scholar

Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • A. Derdacka-Grzymek
    • 1
  • Z. Konik
    • 1
  • J. Iwanciw
    • 1
  • M. Pyzalski
    • 1
  • A. Stok
    • 1
  1. 1.Interbranch Institute of Building and Refractory MaterialsAcademy of Mining and MetallurgyCracowPoland

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