333
Bonded alumina-zirconia-silica (AZS) with 10% zirconia
333 is adapted for most of the standard feeder expendable applications.
Typical application
- orifice rings
- tubes
- plungers
- stirrers
- rotors
Expendables for sodalime glass, bottles and tableware manufacturing.
Chemical and physical properties
Typical chemical composition
Typical crystallographic analysis
Main phase:
- corundum
- zircon
Secondary phase:
- mullite
- silicate
Physical characteristics
| Description | International standards | British standards |
|---|---|---|
| Typical bulk density | 2.95g/cm3 | 184pcf |
| Typical bulk density for orifice rings | 2.96g/cm3 | 185pcf |
| Open porosity | 18% | 18% |
| Open porosity for orifice rings | 19% | 19% |
| Cold crushing strength | 100Mpa | 14,504psi |
| Refractoriness under load 2 105 Pa, 0.5% at | 1,630°C | 2,966°F |
| Coefficient of thermal expansion | 6.3 10-6K-1 | 3.4 10-6°F-1 |
| Thermal shock resistance | good | good |
Storage
The bonded alumina-zirconia-silica (AZS) with 10% zirconia, 333 solution must be stored in a dry environment protected from weather conditions.
Expendables catalog
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ORIFICE RING POWDER fills all the spaces between the orifice ring and its holder. The powder has a higher thermal inertness than insulation fibers.
Fireclay-based luting cement to seal the gap between the orifice ring and the spout
Easy and fast preparation and positioning (5 to 10 min preparation).
R 298 is a refractory-based anti-adhesive powder
Anti-adhesive cement for easy removal of the orifice ring.