1. Technical Parameters of Zirconia Hollow Sphere Brick
|
ZrO2 % |
Y2O3 % |
Fe2O3 % |
Density g/cm3 |
Porosity % |
Cold Crushing Strength MPa |
Thermal Conductivity W/m.k |
|
≥91 |
8-9 |
≤0.2 |
2.5-2.6 |
40-50 |
≥12 |
0.23-0.35 |
2. Product Description of Zirconia Hollow Sphere Brick
Zirconia hollow sphere brick is an ultra-high-temperature insulation product manufactured by molding and high-temperature sintering of zirconia hollow spheres, zirconia powder, and additives. Zirconia hollow sphere brick use yttria-stabilized zirconia as the main raw material ensures high stability of the product, with a compressive strength of up to 12 MPa and a maximum working temperature of 2200°C, surpassing other refractory insulation materials. With excellent stability and performance at high temperatures, it is commonly used as a lining in ultra-high-temperature furnaces. It demonstrates outstanding resistance to acid and alkali corrosion, making it an ideal insulation material for intermediate-frequency high-temperature furnaces, carbon black reaction furnaces, molybdenum furnaces, and more.
3. Main Features of Zirconia Hollow Sphere Brick
(1)High purity: ZrO₂ ≥ 91%, Fe₂O₃ ≤ 0.2%
(2)Excellent stability at high temperatures
(3)High strength: compressive strength ≥ 12 MPa
(4)High service temperature of up to 2200°C, unmatched by other refractory insulation materials
(5)Resistant to acid and alkali corrosion
4. Applications of Zirconia Hollow Sphere Brick
The zirconia hollow sphere brick is mainly used as furnace linings in ultra-high-temperature thermal equipment such as molybdenum furnaces, tungsten rod furnaces, intermediate-frequency high-temperature furnaces, and in metallurgical and chemical industries.
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