Description
Zirconia Bubble brick is derived from zirconia hollow spheres, characterized by robust high-temperature strength and a steadfast pore structure. It embodies exceptional heat insulation and fire-resistant properties, rendering it a product of outstanding performance. With a maximum safe operating temperature of 2200 ℃, this brick finds application as a heat insulation material for furnace covers and other components within ultra-high temperature equipment. It excels as a high-temperature lining material, directly exposed to flames, in thermal equipment across metallurgy, petrochemical, electronics, and other industries, consistently delivering effective results.
Technique Data
| Item | Index | |||||
| GQZ-1 | GQZ-2 | GQZ-3 | GQZ-4 | GQZ-5 | GQZ-6 | |
| Zr(Hf)O2+Stabilizer % | ≥99 | ≥98 | ||||
| Al2O3 % | ≤0.4 | ≤0.6 | ||||
| SiO2 % | ≤0.2 | ≤0.4 | ||||
| Fe2O3 % | ≤0.2 | ≤0.2 | ||||
| Bulk Density g/cm3 | 2.4~2.9 | 2.9~3.2 | 3.2~3.8 | 2.4~2.9 | 2.9~3.2 | 3.2~3.8 |
| Cold Crush Strength MPa | ≥10 | ≥15 | ≥20 | ≥10 | ≥15 | ≥20 |
| Thermal Conductivity W/(m·K) Hot Face 1100℃ |
≤0.7 | ≤0.9 | ≤1.2 | ≤0.7 | ≤0.9 | ≤1.2 |
| Permanent linear change % 1600℃×3h |
-0.3~0 | -0.3~0 | ||||
