Typical application
ARKAL 71 M is used in upper section of regenerators: partition wall, sidewalls and target wall.
For a higher creep resistance application in alkali atmosphere, refer to MS75 or BP MULLITE.
If mortar is required, use MULLITE MORTAR or BP MULLITE MORTAR.
Chemical and physical properties
Microstructure
Image
Typical chemical composition
Typical crystallographic analysis
Main phase:
- Mullite
- Corundum
Physical characteristics
| Description | International standards | British Standards |
|---|---|---|
| Refractoriness under load of 2 105 Pa at 0,5% | > 1,680°C | >3,056°F |
| Cold crushing strength | 77Mpa | 11,168Psi |
| Apparent porosity | 15% | 15% |
| Typical bulk density | 2.64g/cm3 | 164.8lb/ft3 |
Expansion curve
Thermal conductivity curve
Storage
The sintered mullite-sillimanite with 71% alumina, ARKAL 71 M solution must be stored in a dry environment protected from weather conditions.