YUANDONG REFRACTORY - Premium Fused Cast AZS Refractories for Glass Industry

About YUANDONG REFRACTORY

Zhengzhou Yuandong Refractory Co., Ltd. is a leading manufacturer of fused cast AZS (Alumina-Zirconium-Silica) refractories, serving the global glass industry since 2005. Our mission is to deliver superior refractory solutions that enhance furnace efficiency, extend service life, and reduce downtime.

Headquartered in Xinmi, Henan, China, our state-of-the-art production facility combines advanced technology with rigorous quality control to ensure every product meets international standards.

15+

Years Experience

50+

Global Clients

Our Products

Fused cast AZS blocks with exceptional glass corrosion resistance and thermal shock stability. Available in three grades based on ZrO₂ content to meet diverse industrial requirements.

AZS-33

Fused cast AZS-33 is the most commonly used type of AZS fused cast refractory produced by YUANDONG. Offers excellent balance of performance and cost for general glass furnace applications.

ZrO₂ Content: ~33%
Application: Superstructure, sidewalls
Corrosion Resistance: High
Thermal Stability: Excellent

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AZS-36

Fused cast AZS-36 provides improved service over AZS-33 with enhanced resistance to glass melt corrosion. Ideal for high-stress zones in glass furnaces.

ZrO₂ Content: ~36%
Application: Throat, checkers, burner blocks
Corrosion Resistance: Very High
Service Life: Extended

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AZS-41

Fused cast AZS-41 features the highest ZrO₂ content produced by YUANDONG. Designed for the most aggressive glass melting environments requiring maximum durability.

ZrO₂ Content: ~41%
Application: Electrode blocks, superstructure
Corrosion Resistance: Superior
Thermal Shock: Exceptional

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Standard Fused Cast AZS

Our standard fused cast AZS series ensures consistent quality and performance across all grades. Manufactured using precision casting and controlled cooling processes.

Process: Electric arc fusion
Grades: AZS-33, AZS-36, AZS-41
Shapes: Blocks, custom geometries
Standards: ISO 9001 Certified

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Refractory Solutions for Float Glass

Tailored AZS products for float glass production lines, ensuring long-term stability and minimal contamination.

Applications: Tin bath, regenerators
Benefits: Low alkali release
Compatibility: Soda-lime, borosilicate
Service Temp: Up to 1650°C

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High-Zirconia AZS Blocks

Advanced formulations with elevated zirconia content for extreme corrosion resistance in aggressive glass melts.

ZrO₂ Range: 38–42%
Use Case: Recycling furnaces
Advantage: Reduced devitrification
Testing: ASTM C621, C768

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Custom-Shape AZS Components

Precision-machined fused cast blocks for complex furnace designs and retrofit projects.

Capabilities: CNC grinding
Tolerances: ±0.5 mm
Support: 3D modeling & CAD
Delivery: Global logistics

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Quality Assurance Program

Comprehensive testing and inspection protocols to guarantee product consistency and reliability.

Tests: Density, porosity, XRD
Certifications: ISO 9001:2015
Traceability: Batch-level tracking
Reports: Full material certification

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Advanced Fused Cast Technology

YUANDONG utilizes state-of-the-art electric arc furnaces to produce fused cast AZS refractories. Raw materials are melted at temperatures exceeding 2000°C, ensuring complete homogenization and phase purity.

Our controlled cooling process minimizes internal stresses and optimizes crystal structure, resulting in superior thermal shock resistance and mechanical strength.

Key Advantages:

High glass corrosion resistance
Excellent thermal shock stability
Low alkali content reduces glass defects
Precise dimensional control
Long service life in aggressive environments

Frequently Asked Questions

What is fused cast AZS?

Fused cast AZS (Alumina-Zirconia-Silica) is a high-performance refractory material made by melting raw materials in an electric arc furnace, then casting and slowly cooling them into blocks. It offers exceptional resistance to glass melt corrosion and thermal shock.

What’s the difference between AZS-33, AZS-36, and AZS-41?

The number indicates the approximate percentage of ZrO₂ (zirconia) content. Higher zirconia content provides better corrosion resistance but increases cost. AZS-33 is economical for general use, AZS-36 offers improved performance, and AZS-41 delivers maximum durability in harsh conditions.

Can you supply custom-shaped blocks?

Yes, we offer precision machining services to produce custom-shaped AZS components based on your technical drawings or 3D models. We support tight tolerances and complex geometries.

Do you provide technical support?

Yes, our technical team provides installation guidance, failure analysis, and recommendations for optimal refractory selection based on your furnace type and operating conditions.

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