Typical application
Alklear, our premium high-alumina bonded solution is mainly dedicated to forehearth glass contact channel blocks. Its excellent behaviour in contact with sodalime glass drastically reduces risk of glass defect.
The outstanding thermal shock resistance and ability to accomodate fast heat up makes it the prefered option for installation in hot condition.
Chemical and Physical Properties
Microstructure
Image
Typical chemical composition
Typical crystallographic analysis
Main phase : corundum
Physical characteristics
| Description | International standards | British standards |
|---|---|---|
|
Refractoriness under load of 2 105 Pa, at 0.5% |
1,550°C | 2822°F |
| Cold crushing strength | 50 Mpa | 7252 psi |
| Thermal conductivity at 1,000°C | 3,3 W.m-1.K-1 | 22,8 BTU in hr-1.ft-2.F-1 |
| Linear thermal expansion | 8,1 10-6K-1 | 4,5 10-6F-1 |
| Apparent Porosity | 11,5% | 11,5% |
| Typical bulk density | 3,0g/cm3 | 187pcf |
Storage
The bonded high-alumina 96%, ALKLEAR solution must be stored in a dry environment protected from weather conditions.