Bubble Alumina and Bubble Zirconia Bricks 

item	Bubble AL2O3 Brick			Bubble ZrO2 brick
	BA-85	BA-90	BA-99	BZ-98
C Max service temperature	1680	1700	1800	2200
AL2O3 %                ≥	85	≥90	≥99	-
ZrO2  %	-	-	-	≥98()with stabilizer
SiO2  %                ≤	13	≤8	≤0.2	≤0.2
Fe2O3 %                ≤	≤0.2	≤0.2	≤0.2	≤0.2
Bulk density g/cm3	1.4-1.7	1.4-1.7	1.4-1.7	≤3.0
MPa      ≥ Cold crushing strength	12	≥10	≥9	≥8
C    ≥ (0.1MPa,0.6%) Refractoriness under load	1650	≥1700	≥1700	≥1700
% (1600C3h) Reheating linear change rate	±0.3	±0.3	±0.3	±0.2
10-6 (room temp - 1300C) Thermal expansion coefficient	~7.8	~8.0	~8.6	~9.1
W/(m.K) (Average 800C) Thermal conductivity  ≤	0.8	≤1.3	≤1.5	≤0.3
Application	Primarily used for lining of high temperature furnace and thermic insulant of ultra-high temperature furnace of the industrial as refractory material, industrial ceramics, electronice ceramics, petrochemical and metallurgical industries.