Spalling Resistant High Alumina Brick
Spalling resistant high alumina bricks are mainly made of high-quality high alumina bauxite clinker and mullite as raw materials, added with special additives, and sintered at medium temperature.
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Erosion resistance
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Anti-strip
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Thermal shock resistance
Product Introduction
Spalling resistant high alumina bricks are mainly made of high-quality high alumina bauxite clinker and mullite as raw materials, added with special additives, and sintered at medium temperature. The product is mainly composed of corundum and mullite crystal phases, and special additives cause the formation of micro cracks and micro pores inside the product. It has the function of digestion and easy absorption of thermal stress, making the product have high load softening temperature, corrosion resistance, peel resistance, and excellent thermal shock resistance.
Product Specifications
| Index | HWKBL-75 | HWKBL-72 | HWKBL-70 |
| Al2O3（%） ≥ | 75 | 72 | 70 |
| ZrO2（%） | - | - | 3~5 |
| Bulk Density（g/cm3 ） ≥ | 2.5 | 2.6 | 2.5 |
| Apparent Porosity（%） ≤ | 23 | 22 | 24 |
| Cold Compressive Strength（MPa） ≥ | 50 | 60 | 60 |
| 0.2MPa Refractoriness Under Load（T0.6 ℃) ≥ | 1500 | 1500 | 1470 |
| Thermal Shock Resistance（1100℃Water Cycle） ≥ | 15 | 15 | 20 |
| Permanent Linear Change（1500℃ ×2h）（%） | -0.4~0.2 | -0.4~0.2 | -0.4~0.2 |
- Grade:
- HWKBL-75
- HWKBL-72
- HWKBL-70
- HWGKBL-70
