Xintai Refractory supplies premium AZS-41 Fused Cast Refractory Bricks designed for the most demanding areas of glass melting furnaces. With a zirconia content of more than 40.5%, AZS-41 fused cast refractory bricks represent one of the highest-grade AZS materials available, offering exceptional resistance to molten glass corrosion, chemical erosion, and high-temperature wear.
AZS-41 fused cast refractory bricks are manufactured through an advanced electrofusion casting process using high-purity alumina (Al₂O₃), zirconia (ZrO₂), and silica (SiO₂) raw materials. During production, the raw materials are completely melted at high temperatures and precisely cast into molds, forming a dense microstructure composed of corundum crystals, zirconia crystals, and a controlled glass phase.
Due to their extremely high zirconia content and excellent structural stability, AZS-41 bricks provide outstanding corrosion resistance against aggressive molten glass environments. They significantly reduce refractory wear, glass contamination, and furnace maintenance frequency, making them ideal for critical glass furnace components with the highest performance requirements.
Technical Specifications
| Item | AZS-41 |
|---|---|
| ZrO₂, % | ≥40.5 |
| Al₂O₃, % | ≥45.0 |
| SiO₂, % | ≤12.5 |
| Na₂O + K₂O, % | ≤1.3 |
| Bulk Density, g/cm³ | ≥4.00 |
| Apparent Porosity, % | ≤1.2 |
| Cold Crushing Strength, MPa | ≥200 |
| Initial Exudation Temperature, ℃ | ≥1410 |
| Bubble Separation Rate (1300℃×10h), % | ≤1.0 |
| Static Corrosion Rate of Molten Glass | ≤1.2 mm/24h |
Key Features
- Superior Molten Glass Corrosion Resistance: AZS-41 fused cast refractory bricks provide the highest level of corrosion resistance among AZS refractory materials. The high zirconia content improves resistance against molten glass erosion, chemical attack, and long-term furnace wear.
- Highest Zirconia Content AZS Material: With ZrO₂ content exceeding 40.5%, AZS-41 bricks offer excellent stability in aggressive glass furnace environments where conventional AZS materials may experience faster degradation.
- Dense Crystal Structure and Low Porosity: The fused cast manufacturing process creates a compact structure with uniformly distributed zirconia crystals combined with corundum and zircon phases. This dense structure effectively prevents molten glass penetration and improves service life.
- Low Glass Contamination: The stable crystalline structure and controlled glass phase reduce exudation and bubble release, helping maintain high-quality molten glass production with fewer defects.
- Excellent High-Temperature Stability: AZS-41 bricks maintain reliable mechanical strength and dimensional stability under continuous high-temperature operation, making them suitable for key furnace zones exposed to severe thermal and chemical stress.
- Long Service Life: Due to outstanding corrosion resistance and wear performance, AZS-41 fused cast refractory bricks can significantly extend furnace campaign life and reduce replacement frequency.
- Customized Manufacturing: Xintai provides customized AZS-41 refractory bricks and blocks according to different glass furnace designs, installation requirements, and customer specifications.
Typical Applications
AZS-41 Fused Cast Refractory Bricks are mainly used in:
- Glass melting furnace tank sidewalls
- Melting tank corner blocks
- Furnace throat blocks
- Barrier wall blocks
- Weir blocks
- Electrode blocks
- Doghouse areas
- High corrosion zones of glass furnaces
- Float glass production lines
- Container glass furnaces
- Specialty glass manufacturing furnaces
Production Details
The production of AZS-41 fused cast refractory bricks requires precise control of melting temperature, casting conditions, and cooling processes. These factors determine the distribution of zirconia crystals, density, corrosion resistance, and final service performance.
Advanced manufacturing technology enables AZS-41 bricks to withstand the most aggressive glass furnace environments while maintaining excellent structural integrity throughout long-term operation.
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 solutions to ensure safe transportation of AZS-41 Fused Cast Refractory Bricks.
Packing includes:
- Heavy-duty wooden cases for external protection
- Foam boards between individual refractory blocks
- Reinforced corner protection materials
- Plastic film wrapping for moisture protection
- Steel band reinforcement for transportation safety
- Product labels and detailed packing lists
Each package is carefully inspected before shipment to ensure product quality and safe delivery.
Xintai provides global shipping services with reliable logistics solutions and flexible delivery schedules according to customer requirements.
Frequently Asked Questions (FAQ)
Q1: What are AZS-41 fused cast refractory bricks?
AZS-41 fused cast refractory bricks are high-zirconia refractory materials made from alumina, zirconia, and silica through an electrofusion casting process. They are designed for the most corrosive areas of glass melting furnaces.
Q2: What makes AZS-41 different from AZS-33 and AZS-36 bricks?
AZS-41 contains a higher zirconia content of more than 40.5%, providing superior molten glass corrosion resistance and longer service life compared with AZS-33 and AZS-36 bricks.
Q3. Where are AZS-41 bricks used?
AZS-41 bricks are mainly used in critical glass furnace areas such as tank sidewalls, corner blocks, throat blocks, barrier walls, electrode blocks, and doghouse sections.
Q4: Can Xintai manufacture customized AZS-41 blocks?
Yes. Xintai can produce customized AZS-41 fused cast refractory bricks and blocks according to furnace drawings, dimensions, and installation requirements.
Q5: What is the typical delivery time for AZS-41 refractory bricks?
The standard delivery time is usually 15–30 working days, depending on product specifications, order quantity, and customization requirements.
