Description
Zirconia ultra low cement castable is a special refractory material with a low cement content. It typically uses Corundum, zirconia, and ultra-high-performance additives to enhance its performance. This material performs excellently in high-temperature environments, offering outstanding refractoriness, high-temperature strength and resistance to molten slag erosion.
Specification
| Item | Grade | ||
| AKZJ-9 | AKZJ-5 | ||
| ω(Al2O3) / % | ≥75 | ≥75 | |
| ω(Cr2O3) +ω(ZrO2) / % | 9 | 5 | |
| Bulk Density/（g/cm3） | 110℃×24h | ≥2.85 | ≥2.8 |
| Cold Modulus of Rupture/ MPa | 110℃×24h | ≥9 | ≥8 |
| 1000℃×3h | ≥13 | ≥12 | |
| Cold Crushing Strength/ MPa | 110℃×24h | ≥75 | ≥70 |
| 1000℃×3h | ≥110 | ≥100 | |
| Thermal Shock Resistance(1000℃~cold) / % | 110℃×24h | 25 | 20 |
| HPLC / %（Carbon-bed method） | 1000℃×3h | -0.3~+0.3 | -0.3~+0.3 |
| λ [W/(m·K)] | 400℃ | 3~4 | 2~3 |
Applications
Used for the lining of special steel smelting furnaces and melting furnaces. Used for the lining of rare metal smelting furnaces and precious metal refining furnaces. Used for the lining and other parts of ultra-high temperature ceramic firing kilns.
