Fused Cast Zirconia Block (RTK-Z9540) - High Purity Zirconia from China Suppliers and Factory for Glass Furnaces
Brief Introduction
Chemical Composition
| CHEMICAL COMPOSITION AND MINERAL COMPOSITION | ||
|---|---|---|
| Chemical Composition (%) | ZrO₂ | 89.0 |
| SiO₂ | 9.1 | |
| Al₂O₃ | 1.5 | |
| Na₂O | 0.1 | |
| Others | 0.3 | |
| Mineral Composition (%) | Baddeleyite | 88 |
| Vitreous Phase | 12 | |
Physical Property
| PHYSICAL PROPERTY | |
|---|---|
| Normal temperature compressive strength (Mpa) | 600 |
| Bulk density (g/cm³) | 5 |
| Apparent porosity (%) | ≤1 |
| 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 |
5.0 2.4 |
| Coefficient of thermal expansion At 1000°C / At 1500°C |
0.65 0.10 |
Frequently Asked Questions
Q: What raw materials are used to make fused cast zirconia blocks?
Fused cast zirconia blocks are high-zirconia refractories manufactured by melting high-purity raw materials in a PLC-programmed special electric furnace, followed by a specialized casting and molding process.
Q: What is the crystalline structure of these high zirconia bricks?
The crystalline structure is primarily composed of baddeleyite. This specific mineral composition gives the blocks extremely high corrosion resistance and a low foaming rate, protecting the molten glass from contamination.
Q: Which types of glass furnaces are suitable for fused cast zirconia blocks?
They are widely applied in high-quality and specialty glass furnaces, including liquid crystal substrate glass furnaces, high-alumina glass furnaces, borosilicate glass furnaces, halogen lighting glass furnaces, glass ceramic furnaces, and glass fiber furnaces.
Q: What are the chemical specifications of the RTK-Z9540 block?
RTK-Z9540 consists of 89.0% ZrO₂, 9.1% SiO₂, 1.5% Al₂O₃, 0.1% Na₂O, and 0.3% other trace components. Its mineral composition is 88% Baddeleyite and 12% Vitreous Phase.
Q: What are the primary physical properties of these zirconia refractory blocks?
They feature a normal temperature compressive strength of 600 MPa, a bulk density of 5 g/cm³, apparent porosity of ≤1%, and a very low glass phase exudation rate of ≤0.4%.