0102030405
High Purity Fused Cast Zirconia Block (RTK-Z910) - China Suppliers & Factory for Glass Furnace Applications
Brief Introduction
Fused cast zirconia blocks are high zirconia refractories made by melting high purity raw materials through special casting process. The series of molten high zirconium bricks mainly includes RTK-Z9540 (zirconium content >89%) and RTK-Z9510 (zirconium content >93%) RTK-Z9510 Mineral composition: ZrO₂ (93.6%), SiO₂ (5.3%), Na₂O (0.05%).
The crystalline structure of fused cast zirconia blocks is mainly composed of baddeleyite, so it has extremely high corrosion resistance, low foaming rate characteristics, these advantages can prevent the contamination of the molten glass.
Zirconia refractory products are produced with PLC programmed special electric furnace and 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 certification. 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, and have steadily improved the quality stability and traceability of 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/(mk) 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 |
Frequently Asked Questions
What are fused cast zirconia blocks made of?
Fused cast zirconia blocks are high zirconia refractories made by melting high purity raw materials through a special casting process. The series mainly includes RTK-Z9540 (zirconium content >89%) and RTK-Z9510 (zirconium content >93%).
What is the mineral composition of RTK-Z9510?
The mineral composition of RTK-Z9510 is ZrO₂ (93.6%), SiO₂ (5.3%), and Na₂O (0.05%). Its crystalline structure is mainly composed of baddeleyite.
How do zirconia blocks prevent molten glass contamination?
Because the crystalline structure is mainly composed of baddeleyite, the blocks possess extremely high corrosion resistance and low foaming rate characteristics, which effectively prevent the contamination of the molten glass.
What production technologies are used for Reftech zirconia refractories?
They are produced using a PLC programmed special electric furnace and a special material incubator. A shrinkage cavity block casting method is generally used after molding.
What quality standard certifications does Reftech hold?
Reftech has passed ISO9001, ISO14001, and ISO45001 management system certifications. The company also employs an intelligent management platform for digital collection, analysis, and quality traceability.