Specifications

1.High purity;
2.High mechanical strength;
3.Low thermal conductivity;
4.Good stability

The alumina bubble brick used the alumina hollow ball as the main raw material, high-performance powder as additives, and organic material from the temporary binding agent .After mixing, drying, forming, and firing at high temperature shuttle kiln made. 

 

The bubble alumina brick are mainly used for lining of high temperature furnace and industry ceramic, electrical ceramic, petrochemical and metallurgical industries, as well as the insulation material for super high temperature furnace.

 

Physical and chemical index

Item		AKZ-85	AKZ-90	AKZ-99
Chemical composition	Al2O3	≥85	≥90	≥99
	SiO2	≤13	≤8	≤0.2
	Fe2O3	≤0.5	≤0.5	≤0.5
Apparent Porosity%		58-62	58-62	58-62
Bulk Density g/cm3		1.4-1.7	1.4-1.7	1.4-1.7
Cold Crushing Strength Mpa		≥12	≥10	≥9
0.1Mpa Refractoriness Under Load T0.6 °C		≥1650	≥1700	≥1700
Permanent Linear Change On Reheating (%)1500°CX2h		±0.3	±0.3	±0.3
20-1300°C Thermal Expansion  % (x 10-6)		0-7.8	0-8.0	0-8.6
Thermal Conductivity(Average 800°C) W/(M.K)		≤0.8	≤1.3	≤1.5
Max Service Temperature °C		1680	1700	1800

 

We can produce common shaped and irregular shaped refractory brick.

Specifications can be adjust as your application

We ensure the high quality and competitive price

Any inquiry, please feel free to contact us.