FUSED CAST BRICK AZS41
Fused cast AZS (alumina, zirconia and silica) firebricks are mainly categorized into 33#, 36# and 41# according to different zirconia's contents from 33% to 41%.
Fused cast alumina (alpha-beta; Al2O3 and β Al2O3) firebricks are composed of alpha alumina, beta alumina and small amount of glass phase.
Both AZS and alumina firebricks have shown excellent performance in glass furnace construction.
| ITEM | AZS33 | AZS36 | AZS41 | α -β Al2O3 | β Al2O3 |
| Al2O3≥ % | 50 | 49 | 45 | 94 | 93 |
| ZrO2 ≥ % | 32.5 | 35.5 | 40.5 | _ | _ |
| SiO2 ≤ % | 15.5 | 13 | 13 | 1.8 | 0.5 |
| Na2O + K2O≤ % | 1.3 | 1.35 | 1.3 | 3.7 | 6 |
| Bulk Density, (g/cm 3 ) ≥ | 3.75 | 3.85 | 4 | 3.4 | 3.05 |
| Apparent Porosity, ≤ % | 1.2 | 1 | 1.2 | 2 | 10 |
| C. C. S., Mpa ≥ | 300 | 300 | 300 | 200 | 30 |
| Exudating Temperature of Glass Phase, º C≥ | 1400 | 1400 | 1410 | _ | _ |
| Bubbling Tendency(1300º C× 10h) (%) | 2 | 2 | 2 | 0 1000º C× 10h | _ |
| Anti-Corrosion Rate of Glass Liquid, 1500º C× 36h (mm/24h) | 1.5 | 1.4 | 1.2 | < 0.3 1350º C× 10h | _ |
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