Anti-spalling high-alumina brick
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Refractory Brick
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Details Introduction
Anti-spalling high-alumina bricks use high-alumina bauxite as the main raw material, introducing a small amount of ZrO.2(because ZrO2undergoes a phase change between monoclinic and tetragonal, which can improve the thermal shock stability of the product), a certain amount of composite binder and additives are added, and the product is made through shaping and high-temperature firing by controlling the particle size distribution of the raw material.
Performance characteristics: Compared with traditional high-alumina bricks, anti-spalling high-alumina bricks have strong spalling resistance, high refractoriness, good resistance to cracking, and strong corrosion resistance. They also resist corrosion from potassium, sodium, sulfur, chlorine, and alkaline salts, and have low thermal conductivity.
| Project |
Anti-spalling high-alumina brick |
|
|
|
GKBL-70 |
KBL-70 |
| Al2O3% |
70 |
70 |
| ZrO2% |
6-8 |
- |
| Refractoriness ℃ |
1790 |
1790 |
| Bulk density BD g/cm3≥ |
2.5 |
2.6 |
| Apparent porosity AP % ≤ |
24 |
23 |
| Room temperature compressive strength CCS MPa ≥ |
60 |
70 |
| 0.2MP load softening start temperature ℃ RUL ≥ |
1470 |
1520 |
| Thermal shock stability times (1100℃, water cooling) TSR |
30 |
25 |
Key words:
Anti-spalling high-alumina brick
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