Czarexports's Insulating Firebrick is made from high-purity refractory powder and organic fillers which burn out during manufacture to give a uniform and controlled pore sture. The brick is compressed in vacuum and sintered under high temperature. Czarexports's Insulating Firebrick is made from high-purity refractory powder and organic fillers which burn out during manufacture to give a uniform and controlled pore sture. The brick is compressed in vacuum and sintered under high temperature. Czarexports's Insulating Firebrick is widely used as hot face refractory lining or back-up insulation in various kinds of industrial furnaces.
Description |
Grade 23 Brick |
Grade 26 Brick |
Grade 28 Brick |
Grade 30 Brick |
|---|---|---|---|---|
| Classification Temperature (℃) | 1300 | 1400 | 1500 | 1550 |
| Chemical composition (%) | ||||
| Al2O3 | 40 | 56 | 67 | 73 |
| SiO2 | 51 | 41 | 30 | 24 |
| Fe2O3 | <=0.1 | <=0.8 | <=0.7 | <=0.6 |
| Density (kg/m3) | 600 | 800 | 900 | 1000 |
| Modulus of Rupture (MPa) | 0.9 | 1.5 | 1.8 | 2.0 |
| Cold Crushing Strenght (MPa) | 1.2 | 2.4 | 2.6 | 3.0 |
| Permanent Linear Change(%) | 1230℃ x 24h <=0.3 | 1400℃ x 24h <=0.6 | 1510℃ x 24h <=0.7 | 1620℃ x 24h <=0.9 |