75 Alumina Fire Brick from Xintai Refractory is a high-performance refractory brick designed for heavy-duty industrial applications. With Al₂O₃ content of 75–77%, it offers outstanding refractoriness, high load-bearing capacity, and excellent resistance to thermal shock and chemical erosion. Suitable for linings of high-temperature furnaces, this brick ensures durability, efficiency, and long service life in the most demanding thermal environments.
Technical Specifications
| Item | 75 Alumina Fire Brick |
|---|---|
| Brand | Xintai |
| Al₂O₃ Content | 75–77% |
| Bulk Density | 2.70–2.80 g/cm³ |
| Cold Crushing Strength | 650–800 kg/cm² |
| Working Temperature | ≤ 1750ºC |
| Classification Temp. | ~1750ºC |
| Size | 230×114×65 mm (standard) / Custom |
| Color | Light Yellow / Buff |
| Certification | ISO9001 / ISO14001 / ISO45001 / ISO50001 |
| Sample | Free sample available worldwide |
Key Features
High Refractoriness: Withstands extremely high temperatures without melting or deformation.
Excellent Mechanical Strength: Resists crushing under high loads and furnace pressures.
Thermal Shock Resistance: Withstands rapid heating and cooling without cracking or spalling.
Chemical Stability: Resists corrosion from molten slag, alkali, and acidic gases.
Dimensional Accuracy: Precision-machined for stable and tight refractory linings.
Typical Applications
Lining for cement rotary kilns and calcining furnaces
Steel ladles, soaking pits, electric arc furnaces
High-temperature incinerators, waste gasifiers
Lime kilns, hot blast stoves, and preheaters
General industrial furnace linings requiring high alumina performance
Production Details
75 Alumina Fire Bricks are made from carefully selected high-grade bauxite and bonding clays. Using advanced pressing and high-temperature sintering, the bricks are engineered for thermal and structural reliability. Each batch undergoes quality control procedures to meet international standards and ensure consistent performance.
Packing and Shipping Details
Packing: Securely packed on fumigated wooden pallets with shrink wrap and edge protection. Custom packaging available.
Shipping: Global shipping by sea or air, with optimized loading for cost efficiency.
Lead Time: 7–15 days depending on order quantity and customization.
Frequently Asked Questions (FAQ)
Q1: What’s the difference between 75 and lower-grade alumina bricks?
75% bricks offer higher refractoriness and better corrosion resistance than 60–70% alumina bricks.
Q2: Can I get custom shapes or sizes?
Yes, customizations are supported based on your drawings or furnace requirements.
Q3. Are these bricks suitable for load-bearing areas?
Yes, 75 alumina fire bricks are ideal for both structural and insulating layers under high temperature.
Q4: Are samples available?
Yes, free samples are available for global customers.
