Category
Corundum heat storage ball
Classification:
Product Introduction
Product Details
Product Overview:
The corundum thermal storage balls have significant characteristics such as low iron content, high density, good crystallization, high temperature resistance, corrosion resistance, high strength, good thermal shock stability, large heat storage and release capacity, and good thermal conductivity.
Product Details:
1. The specific surface area can reach 200 m²/m³.
2. Numerous small balls divide the airflow into very small streams, creating strong turbulence as the airflow passes through the thermal storage medium, effectively breaking through the boundary layer on the surface of the thermal storage medium. Due to the small ball diameter, small conduction radius, low thermal resistance, high density, and good thermal conductivity, it can meet the requirements for frequent and rapid switching of thermal storage burners.
3. The thermal storage medium can switch 20 to 30 times per hour, and after high-temperature flue gas passes through the thermal storage bed, it can reduce the flue gas temperature to around 130°C for discharge.
4. High-temperature gas and air can be preheated to about 100°C lower than the flue gas temperature along the same path, with a temperature efficiency of over 90%.
5. Due to the very compact size of the thermal storage medium and the strong circulation capacity of the small ball bed, even if resistance increases due to ash accumulation, it does not affect the thermal exchange indicators.
6. The thermal storage balls have strong oxidation resistance and slag resistance. The replacement and cleaning of ceramic balls are very convenient and can be reused.
Product Applications:
Suitable for the selection of thermal storage ball combustion systems in industrial furnaces for gas and non-gas fuels, especially suitable for the steel industry's regenerative heating furnaces, thermal storage baking devices for steel ladles, thermal storage devices for air separation equipment in the air separation industry, and thermal storage melting furnaces in the non-ferrous metal industry. It can also be used in large forging plants for thermal storage bogie furnaces, thermal storage electric boilers, thermal storage incinerators, and other industries as thermal storage carriers.
Physical and Chemical Indicators:
| Item | High Alumina | Mullite Corundum Mullite | Corundum | Zirconia | Zirconia | |
| Al2O3 (%); ≥ | 60-65 | 65-75 | 75-85 | 90-99 | 65-80 | 65-80 |
| Fe2O3 ≤ | 1.5 | 1.2 | 1.0 | 1.0 | Zr2 (%) ≥ 2-8 | Cr2 (%) ≥ 3-10 |
| Apparent Porosity % | 20-22 | 20-22 | 18-22 | 18-20 | 20-22 | 20-22 |
| Bulk Density (g/cm³) ≥ | 2.0-2.3 | 2.3-2.5 | 2.5-2.8 | 2.8-3.2 | 2.7-3.1 | 2.6-3.0 |
| Stacking Density (Kg/m³) | 1400-1500 | 1400-1600 | 1500-1650 | 1650-1800 | 1700-1800 | 1500-1650 |
| Specific Surface Area (m²/m³) | 200-220 | |||||
| Thermal Expansion Coefficient (×10⁻⁶/℃); ≥ | 5.0 | 5.5 | 6 | 7 | 6 | 6 |
| Specific Heat Capacity Reference Value (×10³/Kg.K) | 1.1 | 1.1 | 1.2 | 1.3 | 1.2 | 1.1 |
| 1100℃ Water Cooling (times); ≥ | 30-20 | 20-15 | 20-15 | 15-10 | 10-8 | 10 |
| Operating Temperature (C); ≤ | 1400 | 1450 | 1550 | 1650 | 1350-1500 | 1400-1600 |
Keywords:
Kiln Display
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