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High zirconia fused cast refractory
To provide a high zirconia fused cast refractory which has high corrosion resistance to molten glass and which is scarcely susceptible to cracking during its production. A high zirconia fused cast refractory which has a chemical composition comprising from 96.5 to 98.5 mass% of ZrO 2 , from 0.8 to 2.7 mass% of SiO 2 , from 0.04 to 0.35 mass% in a total amount of Na 2 O and K 2 O, and from 0.02 to 0.18 mass% of B 2 O 3 , wherein contents of Na 2 O, K 2 O and B 2 O 3 satisfy the relation of the following formula (1) at the same time: 0.03§C B2O3 - (C Na2O + C K2O )(1) wherein C Na2O is the content of Na 2 O, C K2O is the content of K 2 O, and C B2O3 is the content of B 2 O 3 , and each of these contents represents mass% in the refractory.
High zirconia fused cast refractory
To provide a high zirconia fused cast refractory which has high corrosion resistance to molten glass and which is scarcely susceptible to cracking during its production. A high zirconia fused cast refractory which has a chemical composition comprising from 96.5 to 98.5 mass% of ZrO 2 , from 0.8 to 2.7 mass% of SiO 2 , from 0.04 to 0.35 mass% in a total amount of Na 2 O and K 2 O, and from 0.02 to 0.18 mass% of B 2 O 3 , wherein contents of Na 2 O, K 2 O and B 2 O 3 satisfy the relation of the following formula (1) at the same time: 0.03§C B2O3 - (C Na2O + C K2O )(1) wherein C Na2O is the content of Na 2 O, C K2O is the content of K 2 O, and C B2O3 is the content of B 2 O 3 , and each of these contents represents mass% in the refractory.
High zirconia fused cast refractory
Schmelzgegossenes feuerfestes Produkt mit hohem Zirkoniumoxydgehalt
Produit réfractaire fondu et coule à teneur élevée de zircone
USHIMARU YUKIHIRO (author) / HAYASHI SHINYA (author)
2017-02-08
Patent
Electronic Resource
English
IPC:
C03B
Herstellung oder Formgebung von Glas, Mineral- oder Schlackenwolle
,
MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
/
C04B
Kalk
,
LIME
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE