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Product category|Phosphate Bonded High Alumina Brick
Al₂O₃: 75％-80％
Fe₂O₃: 2.5%-3.5％
Bulk Density: 2.6-2.85
Refractoriness: 1770℃-1790℃
Cold Compressive Strength: 70-100MPa
Phosphate bonded high alumina refractory brick mainly use calcined bauxite as aggregate and fine powder, bonded by phosphate solution(potency 42.5~50%), formed by drying press, and sintering at medium temperature of 400~600℃.
Higher refractoriness under load
Strong thermal shock resistant ability
Good chemical stability
Higher compressive strength
Phosphate bonded high alumina brick is main refractory material for cement industry, can be used in LTZ/UTZ, calcining zone, cooling zone of cement rotary kilns.
| ltem | Phosphate bricks | Phosphate wear-resistant bricks | Special phosphate brick | Highly charged soft phosphate bricks | |
| Chemical Composition | Al₂O₃% | 75 | 78 | 80 | 80 |
| Fe₂O₃% | 3.5 | 3.5 | 3 | 2.5 | |
| Bulk density | 2.6 | 2.65 | 2.8 | 2.85 | |
| Cold compressive strength MPa | 70 | 80 | 100 | 90 | |
| Refractoriness under load ℃ | 1300 | 1350 | 1450 | 1480 | |
| Refractoriness℃ | 1770 | 1790 | 1790 | 1790 | |
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