We offer HEADWAY for sale!
We offer HEADWAY for sale!
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.
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. Luyang Insulating Firebrick is widely used as hot face refractory lining or back-up insulation in various kinds of industrial furnaces.
Excellent thermal shock resistance
Accurate and customized dimension
High crushing strength
Low thermal conductivity
Low heat storage
Metallurgy industry
Petrochemical industry
Ceramics industry
Aluminum industry
Glass industry
| 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 | ≤1.0 | ≤0.9 | ≤0.8 | ≤0.7 |
| Density (kg/m³) | 600 | 800 | 900 | 1000 |
| Modulus of Rupture (MPa) | 0.9 | 1.5 | 1.8 | 2.0 |
| Cold Crushing Strength (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 |
| Thermal Conductivity (W/m·K) | ||||
| 200℃ | 0.15 | 0.236 | 0.27 | 0.28 |
| 350℃ | 0.18 | 0.24 | 0.30 | 0.35 |
| 400℃ | 0.19 | 0.25 | 0.33 | 0.38 |
| 600℃ | 0.23 | 0.27 | 0.38 | 0.40 |
