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A Precision-Graded Solution: 90% to 99% Alumina Corundum Bricks for Industrial Kilns and Furnaces
1. Alumina: ≥ 90%
2. Standard Size: 230*114*65mm
3. Benefits:
• Inert and Contamination-Free
• Purity and Stability
• Strength and Rigidity
• Outstanding resistance to acid and alkali corrosion
The sintered alumina brick series includes multiple models from A-90 to A-99, With alumina content progressively distributed from 90% to 99%, meeting the requirements of various high-temperature industrial scenarios. This product line is manufactured using high-purity raw materials and specialized sintering processes, featuring an ultra-high service temperature of 1800°C, cold crushing strength exceeding 100MPa, and outstanding resistance to acid and alkali corrosion. These properties make it an ideal choice for upper structure cover plates, burner blocks, observation port bricks, oxygen lance bricks, transition bricks between magnesia and silica bricks, and feeder channel bricks in glass furnaces. Particularly, high-purity models like A-98 and A-99 demonstrate irreplaceable advantages in ultra-high temperature and ultra-high purity operating conditions, with alumina content exceeding 99%.
1. Glass Industry
Regenerator Superstructure: Used in upper checkers and walls to resist corrosion from alkali vapors and batch dust.
Refined Glass Contact Areas: Suitable for components like feed channels and special blocks in certain high-quality glass production lines.
2. Iron & Steel Industry
Ladle Linings: Ideal for slag lines and impact pads in ladles for clean steel and specialty steel production, offering excellent resistance to basic slag erosion.
Tundish Linings: Used in critical areas requiring high purity and thermal stability.
Blast Furnace & Hot Blast Stove Linings: High-purity grades (e.g., A-98, A-99) are used in upper stacks and domes for long-term structural stability.
3. Ceramic & Building Materials Industry
High-Temperature Kiln Furniture: Serving as setters, plates, and beams for firing technical ceramics, advanced refractories, and sanitary ware, where product contamination must be avoided.
Kiln Hot-Face Linings: Lining for the burner blocks, firing zones, and crown of tunnel kilns and shuttle kilns, especially for high-alumina product firing.
| Properties ⁄ Products | Al₂O₃(%) | SiO₂(%) | Fe₂O₃(%) | ApparentPorosity(%) | BulkDensity(g/cm³) | Cold CrushingStrength(MPa) | RefractorinessUnder Load To.5(℃) | |
| Sintered Alumina | A-90 | ≥90 | ≤8 | ≤0.3 | ≤17 | ≥3.10 | ≥80 | ≥1680 |
| A-92 | ≥92 | ≤6 | ≤0.3 | ≤18 | ≥3.10 | ≥90 | ≥1650 | |
| A-95 | ≥95 | ≤2 | ≤0.3 | ≤16 | ≥3.15 | ≥90 | ≥1700 | |
| A-98 | ≥98 | ≤1.5 | ≤0.2 | ≤15 | ≥3.20 | ≥100 | ≥1700 | |
| A-99 | ≥99 | ≤0.29 | ≤0.15 | ≤15 | ≥3.20 | ≥100 | ≥1700 | |
In practical applications, selection should be based on comprehensive evaluation of glass composition, melting temperature, design lifespan and other parameters. We provide professional material selection services including performance parameter analysis, service life prediction, and cost-benefit evaluation. Request a quote now!
