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High Temperature Air Combustion (HTAC) is a new type combustion technology with enormous energy-conservation and environmental protection. The Thermal storage honeycomb ceramics are widely used in the various heating furnaces, hot blast furnaces, heat treatment furnace, cracking furnaces, roaster, melting furnace, soaking pit furnaces, oil gas boiler, etc in the steel, machinery, building materials, petrochemical, colored metal smelting and etc industries. It has 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. Physical & chemical properties:
| Performance index | Mullite | Cordierite | Corundum | |
| Chemical Content | 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% | -- | |
| 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 with good thermal storage media