Alumina-chrome Brick
The chromium corundum series refractory products use high-purity corundum and chromium oxide as the main raw materials. Al2O3 and Cr2O3 react to form a continuous solid solution, which has the characteristics of high temperature strength, low high-temperature creep rate, corrosion resistance, and erosion resistance.
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High strength
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Erosion resistance
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Erosion influence
Product Introduction
The chromium corundum series refractory products use high-purity corundum and chromium oxide as the main raw materials. Al2O3 and Cr2O3 react to form a continuous solid solution, which has the characteristics of high temperature strength, low high-temperature creep rate, corrosion resistance, and erosion resistance. At the same time, the products do not contain MgO, avoiding the cracking problem caused by the reaction with SiO2. Chromium corundum products have excellent resistance to V2O5 and SO3 corrosion.
Product Specifications
| Index | HWGC-10 | HWGC-13 | HWGC-15 | |
| Al2O3（%） ≥ | 84 | 81 | 79 | |
| Cr2O3（%） ≥ | 10 | 13 | 15 | |
| Apparent Porosity（%） ≤ | Straight bricks | 16 | 15 | 14.5 |
| Cylindrical bricks | 17 | 16 | 15.5 | |
| Bulk Density（g/cm3） ≥ | Straight bricks | 3.32 | 3.34 | 3.35 |
| Cylindrical bricks | 3.3 | 3.32 | 3.33 | |
| Cold Compressive Strength （MPa） ≥ |
Straight bricks | 120 | 130 | 140 |
| Cylindrical bricks | 100 | 110 | 120 | |
| 0.2MPa Refractoriness Under Load （T0.6 ℃) ≥ |
Straight bricks | 1700 | 1700 | 1700 |
| Cylindrical bricks | 1700 | 1700 | 1700 | |
| Thermal Shock Resistance （950℃ Cycle） ≥ |
Straight bricks | 15 | 15 | 15 |
| Cylindrical bricks | 15 | 15 | 15 | |
| Index | HWGC-5 | HWGC-12 | HWGC-20 | HWGC-25 |
| Al2O3+Cr2O3（%） ≥ | 93 | 93 | 93 | 93 |
| Cr2O3（%） ≥ | 5 | 12 | 20 | 25 |
| Apparent Porosity（%） ≤ | 18 | 18 | 18 | 18 |
| Bulk Density（g/cm3 ） ≥ | 3.1 | 3.25 | 3.4 | 3.45 |
| Cold Compressive Strength（MPa） ≥ | 100 | 110 | 120 | 120 |
| 0.2MPa Refractoriness Under Load（T0.6 ℃) ≥ | 1700 | 1700 | 1700 | 1700 |
| Thermal Shock Resistance（950℃ Cycle） ≥ | 80 | 80 | 60 | 60 |
| Index | HWGC-A | HWGC-B |
| Al2O3+Cr2O3（%） ≥ | 90 | 85 |
| Cr2O3（%） | 3~10 | 3~10 |
| Bulk Density（g/cm3） ≥ | 3.35 | 3.25 |
| Apparent Porosity（%） ≤ | 16 | 16 |
| Cold Compressive Strength（MPa） ≥ | 120 | 100 |
| 0.2MPa Refractoriness Under Load（T0.6 ℃) ≥ | 1700 | 1700 |
| Permanent Linear Change（1450℃ ×3h）(%) | -0.2~0.2 | -0.2~0.2 |
| Thermal Conductivity（1000℃)[W/（m · K）] ≤ | 2.6 | 2.6 |
| Thermal Shock Resistance（950℃ Cycle） ≥ | 20 | 30 |
| Wear Resistance（cm3） ≤ | 5 | 6 |
- Grade:
- HWGC-10
- HWGC-13
- HWGC-15
- HWGC-5
- HWGC-12
- HWGC-20
- HWGC-25
- HWGC-A
- HWGC-B
