A-621
Alumina mortar for sealing and jointing
High alumina heat-setting cement to joint and seal Alumina and alumina-zirconia-silica (AZS) refractories.
Typical application
Multi-purpose high alumina mortar for jointing / sealling fused cast alumina and alumina-zirconia-silica (AZS) refractories for both glass contact and superstructure applications.
A-621 has a good resistance to glass corrosion and excellent glass contact properties.
Chemical and physical properties
Typical chemical composition
Typical crystallographic analysis
- Corundum
Physical characteristics
| Description | International standards | British standards |
|---|---|---|
| Maximum diameter | 0.25mm | 60Mesh |
| Typical bulk density | 2.62g/cm3 | 164pcf |
Instructions of use
Typical drinkable water addition: 13-16% by weight
Packaging and storage
- 45.5kg/bag (100lbs/bag)
- Must be properly stored up to expiry date in undamaged original sealed packaging, in dry conditions at temperatures between +5°C and +40°C
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