Typical application
ZS1300 is an excellent glass contact refractory due to its chemical inertness and the absence of discoloration, cord and stones when used in contact with various technical and low-alkali glasses.
Used extensively in the reinforcement and textile fiber glass furnaces as a glass contact refractory :
- melter and forehearth backup,
- bottom paving and subpaving,
- forehearth siderails and flow blocks.
In specialty glass applications, ZS1300 is used as a glass contact refractory where glass quality or corrosion requirements are particularly severe such as borosilicates, glass ceramics, low-alkali compositions and other technical glasses.
Chemical and physical properties
Microstructure
Image
Typical chemical composition
Typical crystallographic analysis
Main phase: zircon
Physical characteristics
| Description | International standards | British standards |
|---|---|---|
| Cold modulus of rupture | 86Mpa | 12,473 |
| Cold crushing strength | 400Mpa | 58,015psi |
| Linear thermal expansion | 4.8 10-6K-1 | 2.7 10-6°F-1 |
| Thermal conductivity at 1,000°C | 3.8 W.m-1.K-1 |
26.3 BTU |
| Thermal shock resistance | low | low |
| Open porosity | 0.5% | 0.5% |
| Typical bulk density | 4.33g/cm3 | 270pcf |
Storage
The sintered dense zircon, ZS1300 solution must be stored in a dry environment protected from weather conditions.