High-Quality Fused Cast AZS Block RTK-AZS36 - China Suppliers and Factory for Molten Glass Applications
Brief Introduction
Chemical Composition
| Chemical Composition | Typical Value |
|---|---|
| SiO₂ % | 13.0 |
| Al₂O₃ % | The Remainder |
| ZrO₂ % | 36.5 |
| Fe₂O₃ + TiO₂ + CaO + MgO + Na₂O + K₂O % | ≤ 2.0 |
Physical Property
| Physical Property | Typical Value |
|---|---|
| Bulk density (dense part) g/cm³ | 3.90 |
| Apparent porosity (dense part) % | 0.8 |
| Initial precipitation temperature of vitreous phase °C | 1400 |
| Vitreous phase exudation (1500°C x 4hr) % | 2.3 |
| Anti-molten glass erosion speed under static condition mm/24hr (1500°C x 36hr, ordinary soda lime glass) | 1.3 |
| Bubble release rate % (1300°C x 10hr, ordinary soda lime glass) | 1.0 |
| Calculate Specific Gravity | |
| Ordinary casting / inclined casting g/cm³ | 3.55 |
| Quasi-non shrinkage casting g/cm³ | 3.80 |
| Non shrinkage casting g/cm³ | 3.85 |
Frequently Asked Questions
The primary difference is the ZrO₂ content (33%, 36%, and 41% respectively). Higher ZrO₂ content provides stronger corrosion resistance to molten glass. RTK-AZS36 offers a balanced performance of high corrosion resistance and low contamination, making it a highly versatile standard choice.
The oxidation fused cast process, combined with long arc melting, prevents carbon contamination from the electrodes. This results in high-purity AZS blocks that significantly reduce the risk of contaminating the molten glass during production.
RTK-AZS36 blocks are designed for areas in direct contact with molten glass. Typical application areas include the side walls of the melting end, paving tiles, and the doghouse.
These blocks are optimized versions of RTK-AZS36 and RTK-AZS33. By reducing the silica (SiO₂) and sodium oxide (Na₂O) content, they offer enhanced structural stability and even lower glass contamination rates under extreme furnace conditions.
The casting method directly influences the density and shrinkage cavities of the blocks. Ordinary/inclined casting has a specific gravity of 3.55 g/cm³, quasi-non shrinkage casting achieves 3.80 g/cm³, and non-shrinkage casting reaches the highest density of 3.85 g/cm³.