Advertisement

Russian Journal of Applied Chemistry

, Volume 75, Issue 9, pp 1384–1388 | Cite as

Effects of Mechanochemical Activation and α-Fe2O3 Addition on the Formation of Corundum in Thermal Transformations of γ-Al(OH)3

  • A. V. Tolchev
  • D. G. Kleshchev
  • V. I. Lopushan
Article

Abstract

Transformations of hydrargillite γ-Al(OH)3 during mechanochemical activation in various grinding mills and further calcination of activated samples at 200-1300°C were studied. The effects of mechano-chemical activation and additions of iron(III) oxide compounds on the temperature of corundum formation and on its crystal size distribution were studied.

Keywords

Oxide Iron Calcination Crystal Size Corundum 
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.
    RF Patent 2 109 026.Google Scholar
  2. 2.
    Garshin, A.P., Gropyanov, V.M., and Lagunov, Yu.V., Abrazivnye materialy (Abrasives), Leningrad: Mashinostroenie, 1983.Google Scholar
  3. 3.
    Kalinina, A.M., in Khimiya i tekhnologiya glinozema: Trudy IV Vsesoyuznogo soveshchaniya (Chemistry and Technology of Alumina: Proc. IV All-Union Meet.), Novosibirsk: Nauka, 1971, pp. 360-369.Google Scholar
  4. 4.
    Oberbach, T., Gunter, C., Werner, G., et al., Thermochim. Acta, 1996, vol. 271, pp. 155-162.CrossRefGoogle Scholar
  5. 5.
    Khanamirova, A.A., Adimosyan, A.R., and Apresyan, Apresyan, L.P., Zh. Prikl. Khim., 1998, vol. 71, no. 3, pp. 356-361.Google Scholar
  6. 6.
    Khanamirova, A.A., Adimosyan, A.R., and Apresyan, L.P., Zh. Prikl. Khim., 1998, vol. 71, no. 2, pp. 198-204.Google Scholar
  7. 7.
    Khanamirova, A.A., Oganesyan, P.L., Adimosyan, A.R., and Apresyan, L.P., Zh. Prikl. Khim., 1998, vol. 71, no. 10, pp. 1600-1603.Google Scholar
  8. 8.
    Wells, A.F., Structural Inorganic Chemistry, Oxford: Clarendon, 1984, 5th ed.Google Scholar
  9. 9.
    Freim, J., McKittric, J., Katz, J., and Sickafus, K., Nanostruct. Mater., 1994, vol. 4, no. 4, pp. 371-385.CrossRefGoogle Scholar
  10. 10.
    Sato, T., J. Therm. Anal., 1987, vol. 32, no. 2, pp. 67-70.Google Scholar
  11. 11.
    Il'in, A.P., Shirokov, Yu.G., and Prokof'ev, V.Yu., Izv. Ross. Akad. Nauk, Neorg. Mater., 1995, vol. 31, no. 7, pp. 933936.Google Scholar
  12. 12.
    Karagedov, G.R. and Lyakhov, N.Z., Izv. Ross. Akad. Nauk, Neorg. Mater., 1997, vol. 33, no. 7, pp. 817821.Google Scholar
  13. 13.
    Mendelovici, E., Villalba, R., and Sagarzazy, A., Mater. Res. Bull., 1982, vol. 17, no. 2, pp. 241-243.CrossRefGoogle Scholar
  14. 14.
    Cirilli, V., Gazz. Chim. Ital., 1950, vol. 80, p. 347.Google Scholar
  15. 15.
    Umanskii, Yu.S., Skakov, Yu.A., Ivanov, A.N., and Rastorguev, L.N., Kristallografiya, rentgenografiya i elektronnaya mikroskopiya (Crystallography, X-ray Diffraction, and Electron Microscopy), Moscow: Metallurgiya, 1982.Google Scholar
  16. 16.
    Powder Diffraction File: Search Manual, Swarthmore, Pennsylvania (the United States): Joint Committee on Powder Diffraction, 1977, card nos. 7-324, 10-425, 11-517, 11-661, 21-1307.Google Scholar
  17. 17.
    Mineraly: Diagrammy fazovykh ravnovesii: Spravochnik (Minerals: Diagrams of Phase Equilibria: Handbook), Chukhrov, F.V., Lapin, V.V., and Ovsyannikova, N.I., Eds., Moscow: Nauka, 1974, issue 2.Google Scholar

Copyright information

© MAIK “Nauka/Interperiodica” 2002

Authors and Affiliations

  • A. V. Tolchev
    • 1
  • D. G. Kleshchev
    • 1
  • V. I. Lopushan
    • 1
  1. 1.Chelyabinsk State Pedagogical UniversityChelyabinskRussia

Personalised recommendations