KERUI produces high purity Calcium Aluminate Cements with 70, 75 and 80% Al2O3 content by sintering process.
Estes produtos não só são amplamente utilizados em toda a indústria refractária, mas também noutras áreas, como a construção de materiais químicos, que são muito procurados.
Description of Kerui Refractory Cement CA80
As a high purity product, CA80 contains approximately 80% of alumina, the specific properties of CA80 give high performance concretes the following properties, high refractoriness, excellent mechanical performance.
So it can be used in the refractory industry in conventional and low cement castables, which require fast setting, high early strength development, and good strength at intermediate temperatures. And the very high purity level of CA80 makes it suitable for certain refractory applications. For example: in reducing atmospheres where hydrogen or carbon monoxide is present, low silica and iron oxide are vital.
The 80% alumina cements of KERUI are represented by two product types, CA80 e CA80S.
”CA80S has good fluidity, long workable time and low water demand, ideal to produce castables of good working ability and excellent mechanical strength property without any additives, also it suits very well to be used in high temperature environment or hot summer time.“
Notas: cimento refratário = cimento de alta alumina = cimento de aluminato de cálcio
| Products | CA75 | CA75 | CA80 | CA80 | CA80S | CA80S |
| Tempo de trabalho | Moderado | Moderado | Curto | Curto | Mais tempo | Mais tempo |
| Padrão | Gama habitual | Limite de especificação | Gama habitual | Limite de especificação | Gama habitual | Limite de especificação |
| 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 |
| Tempo de regulação, min | ||||||
| Tempo de regulação inicial IS | 150-200 | ≥150 | 150-210 | ≥30 | 210-270 | ≥180 |
| Tempo de regulação final FS | 240-300 | ≤360 | 210-270 | ≤300 | 260-320 | ≤360 |
| Resistência à flexão, 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 |
| Resistência à compressão, Mpa | ||||||
| 1d | 42-52 | ≥25 | 40-50 | ≥25 | 35-45 | ≥25 |
| 3d | 52-62 | ≥30 | 50-60 | ≥30 | 50-60 | ≥30 |
Additional Information of Kerui 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
Prazo de validade: 6 meses
Packaging and Storage of Kerui Refractory Cement CA80
Método de embalagem: Embalagem padrão para exportação
Sacos de papel: 25/50kg
Sacos grandes: 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.
