Home » Monolithic Refractory » High Alumina Castable
High Alumina Castable
- Al2O3 Content (%): ≥40
- Compressive strength: 1.5~80MPa
- Thermal conductivity: 0.23~1.50(w/mk)
- Working temperature: 1000~1650℃
- Refractoriness (Degree): Common (1580°< Refractoriness< 1770°)
Product Information
Introduction
Technical Data
Properties
Applications
Introduction
High alumina castable, which is mainly made from high alumina aggregate, fine powder and unique liquid silica sol adhesive, is a multicomponent system to the clients.
Technical Data
| Performance | Item | Indicators |
Chemical composition after calcination（%） | SiO2 | 29.0-34.0 |
| Al2O3 | 63.0-69.0 | |
| Alkalis | <0.4 | |
| CaO | <0.1 | |
| Fe2O3 | <0.8 | |
| TiO2 | <1.0 | |
| Physical properties | AP（%） | 13-16 |
| BD（g/cm3) | 2.5-2.6 | |
| CCS（Mpa）816℃ 1400℃ | 30.5-40.0 82.0-113.0 | |
| Applied limit temperature℃ | 1760 | |
| Linear change on reheating（%） | -0.3 ～ 0.1 | |
| Water content（%） | 0 |
Properties
High alumina castable has high strength and density, low porosity and abrasion, and good thermal shock performance as well as erosion resistance. Additionally, it owns good fluidity and plasticity in the construction process.
Applications
High alumina castable is mainly applied in the repair of mullite matrix bricks in flame space of glass furnace, sealing layer of furnace bottom, forehearth, regenerator bottom, side wall, flue and other low temperature areas.
