Zircon refractory brick uses zircon as raw material. It is an acidic refractory brick that is usually used for glass kilns. The characteristics of Kerui zirconia brick are good mechanical shock resistance, stable chemical structure, and low thermal conductivity.
| Item | Dense zircon brick | Zircon brick | zirconium -corundum brick | Zirconium -mullite brick | Semi-zircon brick |
|---|---|---|---|---|---|
| ZrO2 % | ≥65 | ≥60 | ≥30 | ≥18 | ≥15-20 |
| Al2O3 % | - | - | ≥45 | ≥55 | ≥50-60 |
| SiO2 % | - | ≤38 | ≤25 | ≤25 | ≤20 |
| Fe2O3 % | ≤0.3 | ≤0.5 | ≤0.5 | 1.2 | 1.2 |
| Apparent porosity % | ≤18 | ≤22 | ≤20 | ≤17 | ≤20 |
| Bulk density g/cm3 | ≥3.7 | ≥3.5 | ≥3.2 | ≥2.7 | ≥2.7 |
| Cold compressive strength MPa | ≥100 | ≥100 | ≥100 | ≥100 | ≥100 |
| Refractoriness under load°C | ≥1650 | ≥1620 | ≥1650 | ≥1650 | 1550 |
1.Excellent Thermal Shock Resistance; 2.Good Mechanical Shock Resistance; 3.Stable Chemical Structure; 4.Low Thermal Conductivity;
Zirconia bricks are used for key parts of glass kilns, steel furnaces, picture tube furnaces, metallurgical furnaces, and other high-temperature industrial furnaces. It can be used for top, bottom and lining of furnaces.