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Product category|Refractory Cement
AL2O3: ≥50%
Fe2O3: ≤2.5％
Cold Crushing Strength: ≥30MPa
Refractoriness: 1650℃-1770℃
Online Time: 7*24 hours
Refractory cement is refractory hydraulic cementitious material use high-quality bauxite and lime as raw materials, after sintering, the clinker with alumina as the main component is obtained, then grind into fine power.
Refractoriness≥1650℃
Low porosity
High density
High temperature resistance
(1) Preparation of amorphous refractory materials.
(2) Prepare cement for special purposes such as gypsum alumina expanded cement and self-stressing cement.
(3) Special needs projects such as emergency construction, emergency repair, resistance to sulfate corrosion and winter construction.
| High Alumina Cement | ||||||
| Item | CA50 | CA65 | CA70 | CA75 | CA80 | |
| AL203%≥ | 50 | 64-66 | 69-71 | 73-75 | 77-80 | |
| Fe203%≤ | 2.5 | 0.8 | 0.7 | 0.6 | 0.5 | |
| Si02%≤ | 7.5 | 1.2 | 1 | 0.8 | 0.5 | |
| R2O%≤ | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | |
| CI%≤ | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| S%≤ | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | |
| 325 mesh remind≤ | 12 | 5 | 5 | 5 | 5 | |
| Surface(m2/kg)≥ | 320 | 380 | 400 | 430 | 450 | |
| Initial Setting Time,min≥ | 60 | 120 | 120 | 120 | 120 | |
| Final Setting Time,min≤ | 360 | 420 | 420 | 420 | 420 | |
| Crushing StrengthMPa≥ | 1day | 55 | 45 | 40 | 35 | 30 |
| 3days | 65 | 55 | 50 | 45 | 40 | |
| Bending StrengthMPa≥ | 1day | 6.5 | 5.8 | 5.5 | 5.2 | 5 |
| 3days | 7.5 | 6.7 | 6.5 | 6.3 | 6 | |
| Refractoriness(℃) | 1650 | 1680 | 1730 | 1750 | 1770 | |
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