High Alumina Bubble Refractory Brick Refractory, Insulating Firebrick Refractory Material
Specifications:
Technical date
|
Item |
LAAB1650 |
LAAB1700 |
LAAB1750 |
LAAB1850 |
|
Maximn service temperature,% |
1630 |
1680 |
1700 |
1800 |
|
AL2O3,% ≥ |
75 |
90 |
96 |
99 |
|
Fe2o3,% |
0.5 |
0.2 |
0.2 |
0.15 |
|
Bulk density g/cm3 |
1.2-1.5 |
1.4-1.7 |
1.4-1.7 |
1.4-1.7 |
|
Cold crushing strength Mpa |
8-10 |
≥20 |
≥20 |
≥19 |
|
Modulus of rupture strength Mpa |
4.5 |
5.8 |
5.8 |
|
|
Linear change after heating≤ |
0.38 (1600×8h) |
-0.2 (1650×8h) |
-0.2 (1680×8h) |
----- |
|
Thermal expansion coefficient ≤ |
0.56 (1000) |
0.67 (1000) |
0.67 (1000) |
8.6 (1300) |
|
Thermal conductivity(300±25) |
0.8 |
1.0 |
1.0 |
1.0 |
