Description
Hengli Corundum Bricks are made from high purity tabular alumina, fused alumina, sintered in high temperature shuttle kiln. The bricks possess characters of high density, high purity, low porosity, and good thermal shock resistance.
Hengli Corundum bricks can withstand corrosion attack in oxidizing atmospheres and highly reducing atmospheres. It can also withstand high temperature hydrogen attack.
Hengli Corundum Brick is available in standard brick sizes (straight, arches and wedges) as well as custom plates and shapes.
Typical Application
Widely used in the industries such as fertilizer, electro ceramics, petrochemical, steel, foundry, alloy steel, refractories, etc. Typical application such as secondary reformer and gas generator lining, catalyst bed support, channel induction furnace, reheating furnace hearth, etc.
All data above are average test results under standard procedure and are subjected to variation. Result should not be used for specification purpose or creating any contractual obligation. For more information on the safety application or materials, please contact with our sales engineer.
Typical Indexes
| Grade |
| HA-993 | HA-99 | HA-90 | HA-80 |
| AI2O3 | % | ≥99.3 | ≥99 | ≥90 | ≥80 |
| SiO2 | % | ≤0.2 | ≤0.3 | ≤8.5 | ≤18.5 |
| Fe2O3 | % | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.3 |
| Bulk Density | g/cm3 | ≥3.25 | ≥3.25 | ≥3.1 | ≥2.9 |
| Apparent Porosity | % | ≤18 | ≤18 | ≤18 | ≤18 |
| Cold Crushing Strength | MPa | ≥100 | ≥100 | ≥120 | ≥120 |
Refractoriness under load (0.1 MPa, 0.6%) | °C | ≥ 1700 | ≥ 1700 | ≥ 1700 | ≥ 1700 |
Reheating Linear Change (1600°C x8h) | % | ≥-0.2 | ≥-0.2 | ≤0.2 | ≤0.2 |
| Thermal expansion coefficient x10-6 Room temp. to 1300°C |
| 8.1 | 8.1 | 8.1 | 7.6 |
