(19)
(11) EP 1 810 956 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 158(3) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
29.04.2009 Bulletin 2009/18

(43) Date of publication:
25.07.2007 Bulletin 2007/30

(21) Application number: 04732811.7

(22) Date of filing: 13.05.2004
(51) International Patent Classification (IPC): 
C04B 35/66(2006.01)
C04B 35/48(2006.01)
C04B 35/488(2006.01)
 C03B 5/42(2006.01)
C04B 35/482(2006.01)
C04B 35/63(2006.01)
(86) International application number:
PCT/JP2004/006802
(87) International publication number:
WO 2004/101466 (25.11.2004 Gazette 2004/48)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

(30) Priority: 14.05.2003 JP 2003136124

(71) Applicant: AGC Ceramics Co., Ltd.
Minato-ku Tokyo, 108-0014 (JP)

(72) Inventors:
  • ONO, Yasushi, c/o Asahi Glass Ceramics, Co., Ltd.
    Takasago-shi, Hyogo 6760074 (JP)
  • KIDO, Nobuyuki, c/o Asahi Glass Ceramics, Co., Ltd
    Takasago-shi, Hyogo 6760074 (JP)

(74) Representative: Müller-Boré & Partner Patentanwälte 
Grafinger Strasse 2
81671 München
81671 München (DE)


(56) References cited: : 
   
       


    (54) ZIRCONIA BASED MONOLITHIC REFRACTORY


    (57) It is an object of the present invention to provide a zirconia-based monolithic refractory which is excellent in corrosion resistance and penetration resistance against molten glass, and anti-contamination property for molten glass and which is suitable as a tamping material for a glass furnace, excellent in workability and durability.
    The present invention provides a zirconia-based monolithic refractory characterized in that it is a monolithic refractory comprising from 70 to 95 mass% of zirconia particles (as calculated as ZrO2) from 2 to 12 mass% of alumina particles, from 1 to 10 mass% of a binder and from 2 to 8 mass% of a glass content (including a glass phase if such a glass phase is contained in the zirconia particles), and it contains substantially no alumina cement in the monolithic refractory.