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Product description of refractory cement CA80S
With good fluidity, long service life and low water demand, the CA80S are ideal for producing castables without any additives, with good working ability and excellent mechanical strength, and are also very suitable for use in high temperature environments or hot summers.
The 80% alumina cements of KERUI are represented by two product types, CA80 and CA80S.
Notes: refractory cement = high alumina cement = Calcium aluminate cement
More relevant refractory products: High alumina bricks
Parameters of refractory cement CA80S
| Products | CA75 | CA75 | CA80 | CA80 | CA80S | CA80S |
| Workable time | Moderate | Moderate | Short | Short | Longer | Longer |
| Standard | Usual range | Specification limit | Usual range | Specification limit | Usual range | Specification limit |
| SiO2, % | 0.1-0.4 | ≤0.5 | 0.1-0.4 | ≤0.5 | 0.1-0.4 | ≤0.5 |
| Al2O3, % | 73.5-75.5 | ≥73 | 78.0-80.0 | ≥77 | 78.0-80.0 | ≥77 |
| Fe2O3, % | 0.1-0.4 | ≤0.5 | 0.1-0.4 | ≤0.5 | 0.1-0.4 | ≤0.5 |
| CaO, % | 21.0-23.0 | – | 18.5-20.5 | – | 18.5-20.5 | – |
| R2O, % | – | ≤0.4 | – | ≤0.4 | – | ≤0.4 |
| S-, % | – | ≤0.1 | – | ≤0.1 | – | ≤0.1 |
| CI-, % | – | ≤0.06 | – | ≤0.06 | – | ≤0.06 |
| d50(μm) | 6-9 | ≤10 | 5-8 | ≤9 | 5-8 | ≤9 |
| 325M(%) | – | ≤5.0 | – | ≤5.0 | – | ≤5.0 |
| Specific surface areas(㎡/kg) | 420-480 | ≥400 | 450-500 | ≥450 | 450-500 | ≥450 |
| Setting time, min | ||||||
| Initial setting time IS | 150-200 | ≥150 | 150-210 | ≥30 | 210-270 | ≥180 |
| Final setting time FS | 240-300 | ≤360 | 210-270 | ≤300 | 260-320 | ≤360 |
| Flexural strength, Mpa | ||||||
| 1d | 6.5-8.5 | ≥4.0 | 6.0-8.0 | ≥4.0 | 5.5-7.5 | ≥4.0 |
| 3d | 8.5-10.5 | ≥5.0 | 7.0-9.0 | ≥5.0 | 7.0-9.0 | ≥5.0 |
| Compressive strength, Mpa | ||||||
| 1d | 42-52 | ≥25 | 40-50 | ≥25 | 35-45 | ≥25 |
| 3d | 52-62 | ≥30 | 50-60 | ≥30 | 50-60 | ≥30 |
Additional Information of refractory cement CA80S
Principal phase: CA, CA2, Aα
Secondary phase: C12A7
Pyrometric cone equivalent: 1750-1800℃
Bulk density: 800-900 kg/m3
Specific gravity: 3.1-3.2 g/cm3
Shelf Life: 6 months
Packaging and Storage of refractory cement CA80S
Packing method: Standard export packaging
Paper bags: 25/50kg
Big bags: 1.0/1.5mt
Storage tips：High purity calcium aluminate cements must be stored in dry conditions, off the ground. In this case, it will retain its proper ties for at least 6 months. In many instances, experience has demonstrated that properties are retained for more than one year.