Xintai Refractory supplies high-quality AZS-36 Fused Cast Refractory Bricks designed for glass melting furnaces, especially applications requiring superior resistance to molten glass corrosion, alkali attack, and high-temperature erosion. AZS-36 bricks are produced through an advanced electrofusion casting process using high-purity alumina powder and zircon raw materials, creating a dense and stable refractory structure.
AZS-36 fused cast refractory bricks contain approximately 36% zirconia (ZrO₂), providing better corrosion resistance and creep performance compared with lower zirconia AZS materials. Their microstructure consists mainly of corundum crystals, baddeleyite (zirconia) crystals, and a controlled vitreous phase filling the spaces between crystals, which contributes to excellent chemical stability and mechanical strength.
With high bulk density, low apparent porosity, and outstanding resistance against molten glass penetration, AZS-36 bricks effectively reduce furnace erosion and extend the service life of glass furnace linings. They are widely used in glass contact zones, heavy wear areas, and critical furnace structures where long-term stability is required.
AZS-36 fused cast refractory bricks are commonly applied in upper structures of glass melting furnaces, sidewalls, tank blocks, paving blocks, furnace throats, and other areas directly exposed to molten glass.
Technical Specifications
| Item | AZS-36 |
|---|---|
| ZrO₂, % | 36 |
| Al₂O₃, % | 48.3 |
| SiO₂, % | 14 |
| Na₂O, % | 1.4 |
| Corundum Phase, % | 45.5 |
| Baddeleyite Phase, % | 35.5 |
| Vitreous Phase, % | 19 |
| Bulk Density, g/cm³ | 3.75 |
| Apparent Porosity, % | ≤1.0 |
| Cold Crushing Strength, MPa | ≥350 |
| Linear Change Under Load | <1 |
| Refractoriness Under Load (0.2 MPa) | ≥1700℃ |
| Initial Exudation Temperature | 1400℃ |
| Static Corrosion Rate of Molten Glass | ≤1.4 mm/24h |
| Bubble Release Rate | ≤1.2% |
Key Features
- Excellent Molten Glass Corrosion Resistance: AZS-36 fused cast refractory bricks provide outstanding resistance to molten glass corrosion and chemical erosion. The high zirconia content improves stability against alkaline glass liquids, making them suitable for direct contact with molten glass.
- Dense Microstructure and Low Porosity: The electrofusion casting process forms a compact crystal structure with very low apparent porosity. This dense structure minimizes molten glass penetration and improves furnace lining durability.
- High Zirconia Content for Improved Performance: Compared with AZS-33 bricks, AZS-36 contains a higher ZrO₂ content, providing enhanced corrosion resistance, better creep resistance, and improved performance in severe furnace operating conditions.
- Low Glass Defect Risk: The controlled vitreous phase content helps reduce glass phase exudation and bubble formation, minimizing contamination risks and improving the quality of finished glass products.
- High Mechanical Strength: With cold crushing strength exceeding 350 MPa, AZS-36 bricks maintain excellent structural integrity under mechanical stress, thermal shock, and long-term high-temperature operation.
- Reliable Thermal Stability: AZS-36 bricks offer stable performance under continuous furnace operation. Proper heating procedures and installation methods help prevent cracking caused by abnormal thermal expansion.
- Customized Solutions Available: Xintai provides customized AZS-36 fused cast refractory bricks in different sizes, shapes, and designs according to glass furnace structures and customer requirements.
Typical Applications
AZS-36 Fused Cast Refractory Bricks are widely used in:
- Glass melting furnace tank blocks
- Glass furnace sidewalls
- Molten glass contact zones
- Furnace paving blocks
- Furnace throats and channels
- Heavy wear areas of glass furnaces
- Upper structures of glass melting furnaces
- Furnace ports and breast walls
- Tuck stones and special furnace components
- Float glass production lines
- Container glass manufacturing furnaces
- Specialty glass production equipment
Production Details
Xintai AZS-36 fused cast refractory bricks are manufactured using advanced electrofusion casting technology to achieve excellent chemical composition control and a uniform crystalline structure.
The production process includes:
- High-temperature electrofusion melting
- Precision casting and controlled cooling
- Crystal structure optimization
- Dimensional inspection
- Bulk density and porosity testing
- Corrosion resistance evaluation
- Quality inspection before shipment
Through strict manufacturing control, each AZS-33 brick provides stable chemical composition, excellent dimensional accuracy, and reliable furnace performance.
Packing and Shipping Details
Xintai uses professional packaging methods to ensure AZS-36 Fused Cast Refractory Bricks are safely transported worldwide.
Packing includes:
- Strong wooden cases for external protection
- Foam boards between individual AZS bricks
- Reinforced corner protection materials
- Plastic film wrapping for moisture protection
- Steel band reinforcement for transportation safety
- Detailed packing lists and product labels
Each package is clearly marked for easy identification during storage and installation. Before shipment, every batch is inspected to ensure product quality meets customer requirements.
Xintai provides reliable global delivery services with flexible logistics solutions and timely shipment schedules.
Frequently Asked Questions (FAQ)
Q1: What is AZS-36 fused cast refractory brick?
AZS-36 fused cast refractory brick is a high-performance refractory material made from alumina, zirconia, and silica through an electrofusion casting process. It is mainly used in glass melting furnaces due to its excellent corrosion resistance and thermal stability.
Q2: What is the difference between AZS-33 and AZS-36 bricks?
The main difference is zirconia content. AZS-36 contains around 36% ZrO₂, which provides better resistance to molten glass corrosion, higher creep resistance, and improved durability compared with AZS-33 bricks.
Q3. Where are AZS-36 bricks mainly used?
AZS-36 bricks are mainly used in glass contact areas, tank blocks, sidewalls, paving blocks, furnace throats, and other high-wear zones of glass melting furnaces.
Q4: Can Xintai provide customized AZS-36 brick sizes?
Yes. Xintai can manufacture customized AZS-36 fused cast refractory bricks according to different furnace designs, drawings, and installation requirements.
Q5: How long is the delivery time for AZS-36 bricks?
The standard delivery time is usually 15–30 working days, depending on order quantity, product specifications, and customization requirements.
