|
|
 PRODUCT>REFRACTORY BRICK |
 |
| |
|
| |
| |
Andalusite checker bricks |
| |
|
|
|
Item
|
Ha-42
|
|
AI2O3 (%)
|
≥53
|
|
Fe2O3 (%)
|
≤1.7
|
|
Alkalies (%)
|
≤0.6
|
|
TiO2 (%)
|
≤06
|
|
Impurities (%)
|
≤0.7
|
|
Alkalies + Impurities (%)
|
≤1.2
|
|
|
|
|
Apparent Porosity (%)
|
<22
|
|
Bulk density (g/cm3)
|
≥2.275
|
|
Cold crushing strength (MPa)
|
≥30
|
|
Permanent linear change 1400℃/4hr (%)
|
±0.2
|
|
Creep 1300℃/20-50 hr/0.2MPa (%)
|
≤0.2
|
|
Refractoriness under load, 0.2MPa, (°C)
0.5%
2.0%
5.0%
|
≥1350
≥1490
≥1560
|
|
| |
|
|
|
