High Alumina Brick for Hot Air Furnace
High Alumina Brick for Hot Blast Stove is manufactured from high-quality high-alumina chamotte through high-pressure pressing and high-temperature firing. With a high alumina content, the product provides excellent refractory performance and is specifically designed for high-temperature zones of blast furnace hot blast stoves.
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High strength
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Elevated temperature creep
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Erosion influence
Product Introduction
High Alumina Brick for Hot Blast Stove is manufactured from high-quality high-alumina chamotte through high-pressure pressing and high-temperature firing. With a high alumina content, the product provides excellent refractory performance and is specifically designed for high-temperature zones of blast furnace hot blast stoves.The brick features high refractoriness, excellent refractoriness under load (RUL), high hot strength, superior resistance to slag and alkali attack, and low creep at elevated temperatures. These properties ensure outstanding structural stability and long service life under severe high-temperature operating conditions.
Product Specifications
| Index | Al2O3 (%) ≥ |
Bulk Density(g/cm3) ≥ | Apparent Porosity(%) ≤ | Cold Compressive Strength(MPa) ≥ | Permanent Linear Change(%) | 0.2Mpa Refractoriness Under Load(T0.6 ℃)≥ | 0.2Mpa Creep Rate(%)(0-50h) ≤ | Thermal Shock Resistance(1100℃ Cycle) | |
| High alumina brick | LZ80 | 80 | - | 21(23) | 70(60) | -0.4~0.2 (1500×2h) |
1520 | - | ≥ 8 |
| LZ75 | 75 | - | 24(26) | 60(50) | 1500 | - | ≥ 8 | ||
| LZ70 | 70 | - | 24(26) | 55(45) | -0.4~0.1 (1450×2h) |
1500 | - | ≥ 8 | |
| LZ65 | 65 | 2.4（2.35） | 24(26) | 50(40) | 1480 | - | ≥ 8 | ||
| Low creep high alumina brick | DRL155 | 75 | 2.6 | 20(22) | 60(50) | -0.2~0.2 (1500×2h) |
- | 1550℃ 0.8 |
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| DRL150 | 75 | 2.6 | 21(23) | - | 1500℃ 0.8 |
- | |||
| DRL145 | 65 | 2.5 | 21(23) | - | 1450℃ 0.8 |
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| DRL140 | 65 | 2.4 | 20(24) | 55(45) | -0.2~0.2 (1450×2h) |
- | 1400℃ 0.8 |
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| DRL135 | 65 | 2.35 | -0.3~0.2 (1450×2h) |
- | 1350℃ 0.8 |
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| DRL130 | 60 | 2.3 | - | - | |||||
| Thermal shock resistant high alumina bricks | RZL70 | 70 | 2.4 | 24(26) | 50(40) | -0.2~0.2 (1500×2h) |
1500 | - | ≥ 20 |
- Grade:
- LZ80
- LZ75
- LZ70
- LZ65
