Alumina Castable 90% Al2O3 P-CAST-A90
Alumina Castable 90% Al2O3 P-CAST-A90 is a conventional castable based on bauxite and tabular alumina with 89 – 91% Al2O3, suitable for service temperatures up to 1750 °C. It has a hydraulic bond and is installed by casting with vibration.
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- Castables & Ramming Mixes
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Product overview & application
About Alumina Castable 90% Al2O3 P-CAST-A90
Alumina Castable 90% Al2O3 P-CAST-A90 is a conventional castable based on bauxite and tabular alumina with 89 – 91% Al2O3, suitable for service temperatures up to 1750 °C. It has a hydraulic bond and is installed by casting with vibration. Material type according to the datasheet: Dense refractory concrete; raw material basis: bauxite and tabular alumina.
Conventional castables contain more calcium aluminate cement. They are easy to install, but need more water and have a higher porosity after firing than low cement grades, so they are not intended for direct contact with molten metal.
Technical properties
- Maximum service temperature: 1750 °C
- Al2O3: 89 – 91%
- Bulk density: 2.7 – 2.8 g/cm³
- Grain size: 0 – 8 mm
- Cold crushing strength after drying at 110 °C: Min. 500 kg/cm²
Installation, packaging and storage
Installation: casting with vibration. Water addition, drying and initial heat-up should follow the manufacturer's instructions to achieve the best properties. Packaging: 25 kg bags (dry mix, water is added on site). Shelf life: 6 months (dry, cool, frost-free place).
The values in the specification table are taken from the product datasheet. Contact the Pas Espadana technical team to select the right grade for your operating conditions.
Applications
- High-temperature zones of furnaces in the steel, petrochemical and cement industries
- Precast shapes and refractory blocks for severe service
Information needed for review
- Service temperature and type of equipment
- Installation method and lining thickness
- Chemical and mechanical conditions (slag, alkalis, abrasion)
- Required quantity and delivery time
Technical specifications
| Maximum service temperature | 1750°C |
|---|---|
| Bulk density | 2.7 – 2.8g/cm³ |
| Grain size | 0 – 8mm |
| Cold crushing strength (110 °C) | Min. 500kg/cm² |
| Al2O3 | 89 – 91% |
| MgO | Max. 0.4% |
| CaO | 3 – 4.5% |
| Fe2O3 | Max. 1% |
| TiO2 | Max. 1.5% |
| SiO2 | Max. 5% |
| Installation | Casting with vibration |
Selection based on your conditions
Contact our technical team to review grades, supply and to receive a valid document.
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