Refractory Cement CA80
Tel: +86 130 7370 2298
E-mail: sales@refractorygroup.com
【Product Introduction】
Refractory cement CA80 is a high-aluminum pure calcium aluminate cementing material, which is widely used in the construction and repair of high-temperature equipment linings such as steel, non-ferrous metals, and cement.
【Product Features】
High Temperature Stability
Refractory cement CA80 uses high-purity alumina raw materials, which form a stable CA6 structure after sintering. The refractoriness is as high as 1790℃, and it can operate stably for a long time under high temperature environment.
High Purity
Through precise control of raw materials and calcination process, the purity of Al₂O₃ is stable ≥80%, and impurities such as iron and silicon are low.
Strong Versatility
Refractory cement CA80 is suitable for various high-temperature refractory castable systems in steel, nonferrous metals, building materials, petrochemical and other industries, and can be used for the construction of key parts such as furnace linings, ladles, and heating furnaces.
The 80% alumina cements of KERUI are represented by two product types, CA80 and CA80S.
Notes: refractory cement = high alumina cement = Calcium aluminate cement
|
Products |
CA75 |
CA75 |
CA80 |
CA80 |
|
Workable time |
Moderate |
Moderate |
Short |
Short |
|
Standard |
Usual range |
Specification limit |
Usual range |
Specification limit |
|
SiO2, % |
0.1-0.4 |
≤0.5 |
0.1-0.4 |
≤0.5 |
|
Al2O3, % |
73.5-75.5 |
≥73 |
78.0-80.0 |
≥77 |
|
Fe2O3, % |
0.1-0.4 |
≤0.5 |
0.1-0.4 |
≤0.5 |
|
CaO, % |
21.0-23.0 |
- |
18.5-20.5 |
- |
|
R2O, % |
- |
≤0.4 |
- |
≤0.4 |
|
S-, % |
- |
≤0.1 |
- |
≤0.1 |
|
CI-, % |
- |
≤0.06 |
- |
≤0.06 |
|
d50(μm) |
6-9 |
≤10 |
5-8 |
≤9 |
|
325M(%) |
- |
≤5.0 |
- |
≤5.0 |
|
Specific surface areas(㎡/kg) |
420-480 |
≥400 |
450-500 |
≥450 |
|
Setting time, min |
|
|
|
|
|
Initial setting time IS |
150-200 |
≥150 |
150-210 |
≥30 |
|
Final setting time FS |
240-300 |
≤360 |
210-270 |
≤300 |
|
Flexural strength, Mpa |
|
|
|
|
|
1d |
6.5-8.5 |
≥4.0 |
6.0-8.0 |
≥4.0 |
|
3d |
8.5-10.5 |
≥5.0 |
7.0-9.0 |
≥5.0 |
|
Compressive strength, Mpa |
|
|
|
|
|
1d |
42-52 |
≥25 |
40-50 |
≥25 |
|
3d |
52-62 |
≥30 |
50-60 |
≥30 |
Additional Information of Refractory Cement CA80
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 CA80
Packing method: Standard export packaging
Paper bags: 25/50kg
Big bags: 1.0/1.5mt
Storage Tips of Refractory Cement CA80
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.
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