Title:
POROUS HIGH ALUMINA CAST REFRACTORY AND METHOD FOR ITS PRODUCTION
Document Type and Number:
WIPO Patent Application WO/2001/092183
Kind Code:
A1
Abstract:
A high alumina cast refractory which comprises Al¿2?O¿3? in an amount of 94 to 98 mass % and Na¿2?O and/or K¿2?O in an amount of 1 to 6 mass % in total, has $g(a)-Al¿2?O¿3? crystal phase and $g(b)-Al¿2?O¿3? crystal phase as main crystal phases, and has pores being dispersed in the interior thereof with a porosity of 5 to 30 %. The cast refractory has satisfactory corrosion resistance against alkali vapor and the like and excellent resistance to thermal impact and is lightweight, and thus is suitable for a glass melting kiln.
Inventors:
ISHINO TOSHIHIRO (JP)
Application Number:
PCT/JP2001/004522
Publication Date:
December 06, 2001
Filing Date:
May 30, 2001
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
ISHINO TOSHIHIRO (JP)
ISHINO TOSHIHIRO (JP)
International Classes:
C03B5/43; C04B35/107; C04B35/113; C04B38/00; C04B38/10; (IPC1-7): C04B35/657
Foreign References:
| JPS5988360A | 1984-05-22 | |||
| US5733830A | 1998-03-31 | |||
| JPH02116635A | 1990-05-01 |
Other References:
See also references of EP 1288177A4
Attorney, Agent or Firm:
Senmyo, Kenji (Kanda-Higashimatsushitacho Chiyoda-ku, Tokyo, JP)
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