Typical application
PROMOLD is manufactured with alumina-zirconia-silica (AZS) grains providing a good corrosion resistance to alkali or boron vapours. Used in :
- forehearth superstructure subject to high corrosion such as sodalime coloring zone and insulation glass fiber,
- frits and enamel furnaces superstructure including crown,
- and burner block.
If mortar is required, use PROMOLD MORTAR.
Chemical and physical properties
Microstructure
Image
Typical chemical composition
Typical crystallographic analysis
Main phase:
- corundum
- monoclinic zirconia
Physical characteristics
| Description | International standards | British standards |
|---|---|---|
| Refractoriness under load of 2 105 Pa, at 0.5% |
1,320°C | 2,408°F |
| Cold crushing strength | 110Mpa | 15,954psi |
| Linear thermal expansion | 6 10-6K-1 | 3.3 10-6°F-1 |
| Thermal conductivity at 1,000°C | 2.7 W.m-1.K-1 |
18.7 BTU |
| Apparent porosity | 11% | 11% |
| Typical bulk density | 3.25g/cm3 | 203pcf |
Storage
Bonded alumina-zirconia-silica (AZS) with 30% zirconia, PROMOLD solution must be stored in a dry environment protected from weather conditions.