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Burner block
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Burner Blocks Reduce NOx Emissions, Extend Burner Life and Improve Glass Quality
Burner blocks are engineered to withstand high temperatures and the contaminants present in fuel oil, while providing the added resistance to corrosion. Either Calcia, Yttria or Magnesia stabilized Zirconium Oxide compositions will satisfy your unique requirements and extend burner block life to more than one year. Markets served include: glass and quartz melting and high temperature sintering.
Specifications
Physical Properties of Various Zirconia Compositions
| Composition | 1968 | 1651 | 872 | 871 | 890 | 2290 | 3004 |
|---|---|---|---|---|---|---|---|
| Stabilizer | CaO (a) |
CaO (a) |
CaO (a) |
CaO (a) |
Y2O3 (b) |
Y2O3 (b) |
MgO (c) |
| Bulk Density (g/cm3) | 3.3 | 4.2 | 4.1 | 3 | 4 | 4.5 | 4.6 |
| Porosity (%) | 35 | 25 | 30 | 40 | 29 | 23 | 16 |
| Modulus of Rupture (psi) | 450 | 2,400 | 1,100 | 800 | 1300 | 2400 | 3500 |
| Coefficient of Thermal Expansion RT-1300°C (in/in/°C) |
8.2 | 7.3 | 8 | 7.9 | 9.4 | 5.9 | 2.3 |
| Thermal Conductivity (W/m-°K) 800°C | 0.68 | 1.2 | 1.2 | 0.52 | 1 | 1.2 | 1.4 |
a. calcia b. yttria c. magnesia
Refractory Backup (Thermal Insulation)
Extend the life of your furnace, and maintain tighter control over your furnace temperatures with Zircoa’s pre-sintered grog refractory backup (www.zircoa.com/grog).
- Zircoa Backup 1859 — Partially stabilized with magnesia and calcia. Available in -8+100 Tyler mesh size.
- Zircoa Backup 3001 — Partially stabilized with magnesia. Available in -8+28 Tyler mesh size.
- Zircoa Backup 10B – Calcia stabilized bubble zirconia. Available in -10+30 Tyler mesh size.