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High Alumina Refractory Bricks (SK-36 to SK-40)
Henan Jianhong Refractory utilizes premium Rotary Kiln Calcined Bauxite from our local Henan mines to manufacture our High Alumina Series. Unlike standard clay bricks, our High Alumina Refractory bricks (Al2O3 ≥ 48%) are sintered at temperatures exceeding 1500°C, resulting in a dense structure with superior Refractoriness Under Load (RUL).
These neutral refractories are designed for critical zones requiring high mechanical strength and resistance to chemical slag erosion at temperatures up to 1790°C.
- Al2O3: 48-80%
- Refractoriness Under Load: 1420-1530℃
- Cold crushing strength: 50-70MPa
- Standard Size: 230*114*65mm
- Certification: ISO9001/ISO14001/ISO45001/ISO50001
- Samples: Free Sample Available to Any Country
- Premium custom refractories at factory-direct competitive prices.
- Rapid global delivery backed by 24/7 expert engineering support.
Technical Specifications of High Alumina Refractory Bricks (SK Series Data Sheet)
We strictly adhere to GB/T standards which correspond to ASTM High Duty and Super Duty classifications.
| Project | Refractory Clay Brick | High Alumina Refractory Brick | ||||||
|---|---|---|---|---|---|---|---|---|
| SK-30 | SK-32 | SK-34 | SK-35 | SK-36 | SK-37 | SK-38 | SK-40 | |
| AL2O3 % (≥) | 30 | 35 | 38 | 45 | 55 | 65 | 70 | 82 |
| Fe2O3 % (≤) | 2.5 | 2.5 | 2 | 2 | 2 | 2 | 2 | 2 |
| refractoriness(SK) | 30 | 32 | 34 | 35 | 36 | 37 | 38 | 40 |
| 0.2MPa Refractoriness Under Load, °C (≥) | 1250 | 1350 | 1370 | 1420 | 1450 | 1480 | 1530 | 1600 |
| Apparent Porosity,((%) | 22-26 | 20-24 | 20-24 | 20-24 | 21-25 | 21-25 | 21-24 | 20-23 |
| Density (g/cm³) | 1.9-2.0 | 1.95-2.1 | 2.1-2.2 | 2.15-2.22 | 2.25-2.4 | 2.3-2.5 | 2.4-2.6 | 2.5-2.7 |
| Cold Crushing Strength, MPa(≥) | 20 | 25 | 30 | 40 | 45 | 50 | 60 | 70 |
Performance: Why Upgrade from Fire Clay Bricks?
For kiln zones exceeding 1350°C, Fire Clay bricks risk deformation. Jianhong High Alumina Refractory Bricks offer:
- Higher RUL: The mullite and corundum crystal structure ensures the brick maintains shape under heavy loads at high heat.
- Slag Resistance: Excellent resistance to both acidic and slightly basic slags (neutral behavior).
- Abrasion Resistance: Higher density makes them ideal for the discharge zones of rotary kilns.
Advantages of Jianhong High Alumina Refractory Bricks
With superior thermal and mechanical properties, high alumina bricks are the reliable choice for diverse high-temperature industries:
- High Refractoriness: Withstands extreme temperatures up to 1800°C.
- Superior Strength: High CCS (40-70 MPa) ensures structural integrity.
- Thermal Stability: Excellent resistance to cracking and spalling.
- Corrosion Resistance: Strong defense against slag and alkalis.
- Flexible Sizing: Standard and custom shapes available on request.
Industrial Applications of Jianhong High Alumina Refractory Bricks
Iron & Steel Industry: Electric Arc Furnace (EAF) roofs, Blast Furnace stacks, Ladle linings.
Cement Industry: Transition Zone and Cooling Zone of Rotary Kilns.
Glass Industry: Regenerator checker bricks.
Power Generation: Circulating Fluidized Bed (CFB) Boilers.
Explore High Alumina Refractory Bricks Shape(Anchor, Arch, Skew)
Selecting the right high alumina bricks is key to maximizing efficiency and durability. Henan Jianhong Refractory offers a complete range of premium solutions for global industrial kilns and furnaces.
Standard brick
Standard-sized high alumina refractory bricks is 230×114×65mm are widely used in metallurgy, construction, chemical, and power industries for lining blast furnaces, hot blast stoves, cement kilns, and industrial kilns, offering high-temperature resistance, corrosion resistance, and structural strength.
Half size brick
Half size refractory bricks (230×114×32mm) are used for gap filling, structural adjustment, and local repairs in kilns, blast furnaces, and high-temperature equipment, ensuring size matching under complex conditions while providing heat resistance, corrosion protection, and masonry support.
Curved Brick
Curved refractory bricks, with their arc shape, are used in blast furnaces, converters, and electric furnaces to resist high temperatures, slag erosion, and thermal shock. They strengthen furnace linings under extreme conditions like high pressure, alkalinity, and high current impacts in metallurgical applications.
SK fire clay brick
SK fireclay bricks are used in kilns, blast furnaces, and incinerators, providing thermal stability, corrosion resistance, and strength. Suitable for moderate to high temperatures, they extend furnace life, lower maintenance costs, and protect structures from heat and chemical damage in demanding industrial environments.
Anchor brick
Anchor bricks are used to secure refractory linings in industrial kilns, furnaces, and boilers. They provide strong structural support, improve lining stability, and enhance resistance to thermal shock and mechanical stress, ensuring longer service life and reduced maintenance in high-temperature environments.
Checker brick
Checker bricks are used in the regenerator chambers of hot blast stoves to store and transfer heat efficiently. They feature high thermal conductivity, excellent heat resistance, and strong structural stability, helping improve furnace efficiency and energy savings in high-temperature industrial applications.
Checker brick
Checker bricks are used in the regenerator of hot blast stoves to store and transfer heat efficiently. Their unique hole structure improves air heating, enhances energy efficiency, and withstands high temperatures and thermal shock, ensuring stable furnace operation
Special Shaped Brick
Get custom-Special shaped refractory bricks engineered to your exact specifications. We tailor size, parameters, and material to match your operating temperatures, ensuring perfect fit and top performance. Boost your furnace reliability and efficiency with precision-made solutions designed for your toughest conditions.
Why Choose Our OEM/ODM Services for Custom High Alumina Refractory Bricks?
At Jianhong Refractory, we understand that “one size fits all” doesn’t work for high-performance kilns. We provide comprehensive customization services to turn your technical drawings into reality：
- Material Engineering: Tailored Al₂O₃ content (48%-80%) for optimal refractoriness.
- Perfect Fit: Custom sizes minimize joint gaps and heat loss.
- Versatile Shapes: Expertise in Wedge, Arch, Anchor, and Checker bricks.
- Global Standards: All custom products undergo strict QC to meet international benchmarks.
High Alumina Refractory Bricks Packing & Export Logistics
Robust seaworthy wooden pallet packaging with shrink wrap protection ensures zero damage during transit. Efficient container loading and logistics guarantee timely global delivery.
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