Corundum Brick
It is a high-quality refractory material in which the main crystalline phase is corundum (α-Al₂O₃), with an Al₂O₃ content exceeding 90%
Application
It is widely used as lining material in petrochemical thermal units operating under conditions of high temperature, high pressure, strong chemical erosion, and mechanical wear.
Description
High-purity corundum brick is manufactured through high-pressure forming and high-temperature sintering using electrically fused white corundum, tabular corundum, and ultrafine powders. Corundum brick exhibits high hardness and melting point, along with excellent stability against acidic and basic slags, molten metals, and glass solutions. It is characterized by advantages such as high-temperature resistance, high compressive strength, superior resistance to high-temperature erosion, and erosion resistance.Specifications
| Item | GYZ-99A | GYZ-99B | GYZ-98 | GYZ-95 | |
|---|---|---|---|---|---|
| Al2O3 % | ≥99 | ≥99 | ≥98 | ≥95 | |
| SiO2 % | ≤0.15 | ≤0.2 | ≤0.5 | / | |
| Fe2O3 % | ≤0.1 | ≤0.15 | ≤0.2 | ≤0.3 | |
| Apparent Porosity % | ≤19 | ≤19 | ≤19 | ≤20 | |
| Bulk Density g/cm3 | ≥3.20 | ≥3.15 | ≥3.15 | ≥3.1 | |
| CCS MPa | ≥80 | ≥80 | ≥80 | ≥100 | |
| 0.2MPa RUL °C | ≥1700 | ||||
| PLC, % 1500°C×2h | ±0.2 | ±0.3 | |||
Applications
- Regenerators in the glass industry
- Pyrolysis furnaces
- Secondary reformer furnaces
- Gas generators for ammonia synthesis
- Sulfur recovery unit furnaces
- Carbon black reactors
- Lithium-ion battery industry
Corundum brick laying for carbon fiber graphitization furnace
Circular corundum brick masonry
Corundum brick masonry for lithium battery pusher kiln
Corundum refractory baffle brick
Lining of a rotary kiln with corundum brick