Corundum Brick is high-grade shaped refractory brick mainly composed of α‑Al₂O₃ corundum phase, sintered at ultra-high temperature above 1600℃ with fused or tabular alumina raw materials. It belongs to premium alumina refractory, featuring much better high-temperature performance than high alumina bricks.
Key Features：
- Extremely high refractoriness above 1790℃, excellent hot strength and creep resistance.
- Superior resistance to acid and alkaline slag erosion, stable under severe corrosion conditions.
- Good thermal shock resistance for dense corundum grades; low porosity and high bulk density.
- Low impurity content, minimal contamination to molten materials.
- Outstanding wear resistance and long service life under continuous high temperature.
Available Grades：
A90: Al₂O₃ ≥90%
A95: Al₂O₃ ≥95%
A99: Al₂O₃ ≥99%
Main Applications：
- Lining for high-temperature tunnel kilns, shuttle kilns and industrial furnaces.
- Steel industry: ladle, tundish, continuous casting nozzle and purging plug.
- Petrochemical high-temperature reformer, glass furnace and ceramic firing kilns.
- Non-ferrous metal smelting furnaces and waste heat incinerators.
Available Sizes & Packing：
Standard size: 230×114×65 mm; Optional: 230×114×75 mm, 150×150×65 mm. Custom special shapes and precast blocks available.
Packing: Wooden pallets with plastic wrapping, shockproof packing for high-grade bricks.
COA certificate provided per batch.
Specification:
Chemical Composition | A90 | A95 | A99 |
Al₂O₃ | 90% min | 95% min | 99% min |
SiO₂ | 7.0% max | 2.5% max | 0.5% max |
Fe₂O₃ | 1.0% max | 0.8% max | 0.2% max |
Bulk Density | 2.85 g/cm³ min | 3.10 g/cm³ min | 3.20 g/cm³ min |
*Specifications and Sizes can be customized upon request.
Available Sizes & Packing：
Standard size: 230×114×65 mm; Optional: 230×114×75 mm, 150×150×65 mm. Custom special shapes and precast blocks available.
Packing: Wooden pallets with plastic wrapping, shockproof packing for high-grade bricks.
COA certificate provided per batch.