Calcia Stabilized Hollow Zirconia Sphere 16-30 mesh
Calcia Stabilized Hollow Zirconia Sphere 16-30 mesh are premium lightweight refractory aggregates with stable high-temperature performance. The calcia-stabilized structure eliminates thermal phase transformation, delivering excellent thermal shock resistance and structural stability. The closed hollow structure ensures ultra-low thermal conductivity and outstanding heat insulation. With uniform particle size, high refractoriness and strong corrosion resistance, these spheres are widely used for ultra-high temperature furnace lining insulation, zirconia castables and high-grade refractory thermal barrier components. Calcia stabilized zirconia can maintain its cubic crystal structure at high temperature. Thus the thermal performance is better especially with high anti-corrosion, and thermal shock resistance. It can avoid the shaped refractories cracking.
Calcia Stabilized Zirconia Bubble/ Hollow Zirconia Sphere 3-5mm Properties:
- High melting point (~2700°C).
- Good thermal shock resistance.
- Moderate ionic conductivity.
- Chemical inertness & corrosion resistance.
- High cost effective compared to Yttrium stabilized zirconia.
Chemical composition of Calcia Stabilized Zirconia Bubble/ Hollow Zirconia Sphere 3-5mm(%)：
| Item | Bubble | 3% CSZ Grain | 7% CSZ Grain |
| ZrO2 | Min. 95 | Min. 94 | Min. 91 |
| CaO | 3.0-4.0 | 3.0-4.5 | 7.0-7.8 |
| SiO2 | Max.0.30 | Max.0.40 | Max.0.40 |
| Al2O3 | Max.0.20 | Max.0.20 | Max.0.20 |
| Fe2O3 | Max.0.05 | Max.0.10 | Max.0.10 |
| TiO2 | Max.0.20 | Max.0.20 | Max.0.20 |
- Customized bubble & grain & powder are available upon request.
Physical properties of Calcia Stabilized Zirconia Bubble/ Hollow Zirconia Sphere：
| Specific Gravity | 5.6-5.9 g/cm3 |
| Melting point | 2700 degree |
| Hardness | Vickers 12.5 GPA |
| Stabilization Rate | 70-95% |
Specification:
| Bubble(Zirconia Bubble) | 0-1mm,1-3mm,3-5mm,4-8mm,1-5mm,etc. |
| Grain & Powder | 60mesh,80mesh,150mesh,200mesh,325mesh,800mesh, 1000mesh,1500mesh,2000mesh,2500mesh,3000mesh,4000mesh, 6000mesh,8000mesh,etc. |
Calcia Stabilized Zirconia Application：
- Ultra-high temperature furnace lining, zirconia hollow ball castable, insulating refractory brick, semiconductor sintering furnace.
- Fixed diameter nozzle plug, sliding gate, immersion water plug in steel making furnace.
- Zirconia base lightweight fire bricks and shaped refractories.
- High quality kiln furniture.
- Electronic ceramics such as setter plates and saggers.
- Abrasive industry and wear resistance additives such as auto brake lining.
Package:
FAQ:
- Q: What is the refractory temperature of calcium-stabilized zirconia hollow spheres?A: The refractory temperature of calcium-stabilized zirconia hollow spheres can reach over 2400 degrees Celsius, while the melting point of zirconia hollow spheres is 2700 degrees Celsius. It meets the technical requirements for special high-temperature scenarios.
- Q: What is the stabilization rate of calcium-stabilized zirconia hollow spheres?A: The stabilization rate of calcium-stabilized zirconia hollow spheres is over 95%.
- Q: What is the breakage rate of zirconia hollow spheres?A: The breakage rate of zirconia hollow balls produced by Haixu Abrasives varies depending on the size of the balls. The larger the particles, the higher the breakage rate. The breakage rate of zirconia hollow balls is no more than 10%.
