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High Temperature Air Combustion (HTAC) has been widely used in fields of smelting, metallurgy, petrochemical, electric power, and boiler and so on.The Thermal storage honeycomb ceramics have the following notable characters: perfect high temperature resistance, anticorrosion, perfect thermal shock stability, high mechanical strength, large thermal storage capacity, advantage heat conduction property, energy conserving result and service life are improved greatly.
Material: cordierite, mullite, alumina, corundum and corundum mullite.
1. Chemical compound:
Content | Mullite | Cordierite | Corundum |
SiO2 | 25-30% | 46-52% | 8-11% |
AL2O3 | 70-72% | 32-37% | 85-92% |
MgO | -- | 12-16% | 1.8-2.5% |
Fe2O3 | ≤1.0% | ≤1.0% | ≤0.5% |
Na2O+K2O+CaO | ≤1.0% | ≤1.0% | 0.5-12% |
TiO2+BaO | -- | ≤1.0% | -- |
2. Physical properties:
Performance index | Mullite | Cordierite | Corundum | |
Compressive Strength(Mpa) | Lengthways | ≥30 | ≥30 | ≥30 |
Horizontal | ≥10 | ≥10 | ≥10 | |
Density (g/cm3) | ≥2.9 | ≥2.5 | ≥3.2 | |
Water-absorbing rate (%) | 15-30 | 15-30 | 15-25 | |
Coefficient of Thermal Expansion (×10-6/ K) | 3.0-5.5 | 3.0-5.0 | 5.0-7.0 | |
Thermal Capacity(J/Kg.k) | 850-1050 | 800-1200 | 1300-1400 | |
Thermal Conductivity (W/mk) | 1.4-2.0 | 1.3-1.8 | 5.0-10.0 | |
Highest Working Temperature(°C) | 1550 | 1350 | 1600 | |
Honeycomb ceramic regenerator for steel heater