Zirconia Corundum Blocks
Спеченный AZS блок. Термостойкость выше, чем у литого AZS-блока(бакор)
Application
Glass Melting Furnace: regenerator checker packing, burner channel, working end (working basin), crown (arch), L-shaped suspended sidewall, feeder (doghouse), bottom block (lower row)
Description
Sintered zirconia-corundum brick is manufactured through high-pressure pressing and high-temperature sintering using high-purity raw materials, electrically fused materials, ultrafine powders, and composite additives. It exhibits excellent resistance to molten glass and high mechanical strength. Furthermore, due to the presence of partially stabilized tetragonal zirconia (ZrO₂), a network of microcracks and moderate porosity is formed within the brick, providing superior thermal shock resistance compared to fused-cast AZS (Al₂O₃-ZrO₂-SiO₂) bricks.Specifications
| Item | AZS-16 | AZS-20 | AZS-32 |
|---|---|---|---|
| ZrO2 % ≥ | 16 | 20 | 32 |
| Al2O3 % ≥ | 59 | 55 | 45 |
| Fe2O3 % ≤ | 0,5 | 0,5 | 0,5 |
| Cold Crushing Strength MPa ≥ | 70 | 80 | 90 |
| Open Porosity % ≤ | 20 | 18 | 17 |
| Bulk Density g/cm3 ≥ | 3,0 | 3,1 | 3,2 |
| Refractoriness Under Load (0,2MPa), °C ≥ | 1620 | 1650 | 1680 |
| The composition is optimized according to the client’s technological conditions. Dimensions are customized to individual parameters. | |||
Features
High thermal shock resistance
Superior to that of fused-cast AZS blocks
Resistance to Molten Glass Erosion
Significantly extends service lifeThermal Stability
Maintains excellent physical properties at high temperaturesApplications
- Glass Melting Furnace: regenerator checker packing, burner channel, working end (working basin), crown (arch), L-shaped suspended sidewall, feeder (doghouse), bottom block (lower row).
- Sodium Silicate Furnace
- Ceramic Frit Melting Furnace
- Chemical and Metallurgical Industry Furnace
- Feeder Channel System