High Purity Fused Cast Zirconia Block RTK-Z910 from China Suppliers & Factory for Glass Furnaces
Brief Introduction
Fused cast zirconia blocks are high zirconia refractories made by melting high purity raw materials through a special casting process. The series of molten high zirconium bricks mainly includes RTK-Z9540 (zirconium content >89%) and RTK-Z9510 (zirconium content >93%).
The crystalline structure of fused cast zirconia blocks is mainly composed of baddeleyite, so it has extremely high corrosion resistance and low foaming rate characteristics. These advantages effectively prevent the contamination of the molten glass.
Zirconia refractory products are produced with a PLC programmed special electric furnace and a special material incubator. During casting, the shrinkage cavity block is obtained after molding. This casting method is generally used for cast zirconia block products.
We, Reftech, have passed ISO9001, ISO14001, and ISO45001 management system certifications. At the same time, our company has established an intelligent management platform to conduct digital collection and analysis of the production process from raw materials to finished products, steadily improving the quality stability and traceability of our products.
We establish a standardized, independent, and efficient quality assurance system according to the requirements of modern enterprises. We rely on advanced analytical instruments and testing equipment to monitor the whole process of products, provide scientific and effective theoretical data for production, and provide users with high-level quality supervision services.
Chemical Composition
| CHEMICAL COMPOSITION AND MINERAL COMPOSITION | ||
|---|---|---|
| Chemical Composition (%) | ZrO₂ | 93.5 |
| SiO₂ | 4.8 | |
| Al₂O₃ | 0.8 | |
| Na₂O | 0.4 | |
| Others | 0.5 | |
| Mineral Composition (%) | Baddeleyite | 94 |
| Vitreous Phase | 6 | |
Physical Property
| PHYSICAL PROPERTY | |
|---|---|
| Normal temperature compressive strength (Mpa) | 600 |
| Bulk density (g/cm³) | 5.2 |
| Apparent porosity (%) | ≤1.0 |
| Corrosion resistance of molten glass at three-phase interface mm/24h | ≤0.8 |
| Exudation amount of vitreous phase | ≤0.4 |
|
Thermal conductivity W/(m·k) • At 600°C • At 1000°C |
3.0 2.8 |
|
Resistivity (Ω·m) • At 1500°C • At 1600°C |
0.6 0.4 |
|
Coefficient of thermal expansion • At 1000°C • At 1500°C |
0.7 0.20 |