Mullite insulating brick

Product description:
Mullite insulating brick, select high pure mullite as raw material, by adding alumina powder according to different type and then sintering in high temperature. Insulating brick is the new energy saving material for insulation

Features:
Low thermal conductivity
Good  thermal insulation performane
Low density
Excellent heat shock resistance

Application:
Glass industry
Ceramics industry
Electric aluminum industry
Heat surface fireproof lining
Iron & steel industry
Non-ferrous metal industry

Technical data:

Type No.


g/cm3

Density


MPa

Compressive Strength


MPa

Rupture Strength

%

Linear Change on Reheating

Thermal Shock Resistance, Times

Heat Conductive Cofficient
w/m.k

Al2O3
≥%

Fe2O3
≤%

RA-23

0.60

1.3

1.0

1230×12-0.5

≥20

400℃ 0.15
1000℃ 0.2

40

0.70

RA-26

0.80

1.8

1.4

1400×12-0.5

>20

600℃ 0.25
800℃0.27

55

0.70

RA-28

0.90

2.2

1.7

1510×12-1.0

>20

600℃ 0.34
1000℃0.347

65

0.60

RA-30

1.0

2.50

2.10

1600×12-1.0

>20

600℃ 0.43
1000℃0.45

74

0.50

RA-32

1.2

3.50

2.50

1650×12-1.0

>20

600℃ 0.50
1000℃0.53

76

0.40