Refractory clay fire bricks firebricks for insulation of furnaces
Product Description
Fire clay brick is a kind of weak acid refractory product. It can resist the corrosion of acid slag and acid gas, but of low resistance to alkaline matters. It is of good thermal performance and good thermal shock resistance.
Item | Fireclay Insulating Brick | |||
0. 6 | 0.8 | 1.0 | 1.3 | |
Al2O3 (%) | 40 | 40 | 40 | 40 |
Fe2O3 (%) | 1.5 | 1.5 | 1.2 | 2 |
SiO2 | 55 | 55 | 55 | 55 |
Bulk Density (g/cm3) | 0.6 | 0.8 | 1.0 | 1.3 |
Apparent Porosity % | 70 | 60 | 55 | 50 |
Cold Crushing Strength(Mpa) ≥ | 2.0 | 2.5 | 3.0 | 4.0 |
Reheating Linear Change (%)°C X 12H ≤ | 1300℃ -0.5 | 1350℃ -0.5 | 1350℃ -0.9 | 1350℃ -0.9 |
Thermal Conductivity(W/m.k)(1000°C) | 0.33 | 0.60 | 0.45 | 0.8 |