Refractory Cement CA70
- Al2O3(%): 68.5-70.5
- CaO(%): 28.5-30.5
- Compressive Strength (72hrs) (MPa):45-55
- Final Setting Time (min): 150-240
- Certification: ISO9001/ISO14001/ISO45001/ISO50001
- Sample: testing of sample is available
Description of Refractory Cement CA70
High purity calcium aluminate cement CA70 contain only calcium aluminates.
The high calcium aluminate content provides characteristics ideally suited for refractory applications where rapid hardening combined with excellent mechanical resistance and high temperature performance are required. So they are widely recommended for high performance refractories such as low cement, ultra low cement castables.
Kerui Refractory Cement CA70
Chemical Analysis
| SiO2,% | Al2O3, % | Fe2O3, % | CaO, % | MgO, % | R2O, % | S, % | CL, % |
|---|---|---|---|---|---|---|---|
| ≤ | ≥ | ≤ | - | - | ≤ | ≤ | ≤ |
| 0.1 | 68 | 0.7 | 28.5-29.5 | - | 0.4 | 0.1 | 0.06 |
Typical Physical Properties
| Methods | Units | Usual range | Specification limit | ||||
|---|---|---|---|---|---|---|---|
| Fineness | d50, μm | 11-4 | ≤14 | ||||
| 325M, % | - | ≤8 | |||||
| S, m²/kg | 380-420 | ≥350 | |||||
| Setting Time | Initial Setting Time, min | 180-240 | ≥30 | ||||
| Final Setting Time, min | 240-300 | ≤240 | |||||
| Strength (ISO) | Flexural Strength, Mpa | 1d | 9-11 | ≥5 | |||
| 3d | 11-12 | ≥6 | |||||
| Compressive Strength, Mpa | 1d | 45-55 | ≥30 | ||||
| 3d | 55-65 | ≥40 | |||||
| Refractoriness, ℃ | 1580-1620 | ||||||
| Workable time | Moderate | ||||||
