Title:
ALUMINA-ZIRCONIA-SILICA FUSED CAST REFRACTORY AND GLASS MELTING FURNACE
Document Type and Number:
WIPO Patent Application WO/2019/092908
Kind Code:
A1
Abstract:
Provided are: an alumina-zirconia-silica (AZS) fused cast refractory in which generation of cracks is further prevented during production of the AZS fused cast refractory and in which grinding and polishing parts are reduced; and a glass melting furnace using the same. This AZS fused cast refractory comprises, in mass% on an oxide basis, 30 to 75% of Al2O3, 20 to 55% of ZrO2, 5 to 15% of SiO2, 0.12 to 1.52% of Na2O, and 0.11 to 1.46% of K2O, and satisfies formulas (1) and (2).
0.080≤(Na2O+K2O/1.52)/SiO2≤0.140 (1)
0.2≤(K2O/1.52)/(Na2O+K2O/1.52)≤0.6 (2)
(In formulas (1) and (2), the chemical formulas represent the contents (mass%) of the chemical formulas in the refractory.)
Inventors:
TANIMOTO TOSHIRO (JP)
MATANO KENJI (JP)
MATANO KENJI (JP)
Application Number:
PCT/JP2018/020332
Publication Date:
May 16, 2019
Filing Date:
May 28, 2018
Export Citation:
Assignee:
AGC CERAM CO LTD (JP)
International Classes:
C04B35/109; C03B5/43
Domestic Patent References:
| WO2009072627A1 | 2009-06-11 |
Foreign References:
| JP2011020918A | 2011-02-03 | |||
| JPH01252574A | 1989-10-09 | |||
| JPS6259576A | 1987-03-16 | |||
| JP2001220249A | 2001-08-14 | |||
| JPH10101439A | 1998-04-21 | |||
| JPH11343174A | 1999-12-14 | |||
| JPH0653604B2 | 1994-07-20 | |||
| JP4275867B2 | 2009-06-10 | |||
| JP4297543B2 | 2009-07-15 | |||
| JP3904264B2 | 2007-04-11 |
Other References:
See also references of EP 3708556A4
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, P.C. (JP)
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