Anti-spalling high-alumina brick
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Heavy 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 transition 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 obtained 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 anti-spalling ability, high refractoriness, good resistance to spalling, 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 bricks |
|
|
|
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 |
| Cold crushing 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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