AZS-33 Bricks
LAR’s AZS-33 Bricks are widely used refractory materials in glass melting furnaces. Manufacturers produce AZS-33 corundum Bricks by electro-fusion casting technology. This process creates a dense and stable internal structure.
LAR’s AZS-33 Bricks belong to the azs-bricks category. The material mainly contains alumina (Al₂O₃), zirconia (ZrO₂), and silica (SiO₂). The “33” grade indicates the approximate zirconia content. This composition provides balanced corrosion resistance and thermal stability.AZS-33 corundum Bricks are a type of advanced corundum brick used in glass industry applications. The material performs well in contact with molten glass. The structure resists erosion and maintains stability during long-term operation.
The zirconia-alumina-silica structure improves resistance to glass liquid erosion and thermal stress. The dense fused cast body also helps reduce glass penetration during long-term furnace operation.AZS-33 bricks offer good thermal stability and reliable mechanical strength. The products help maintain furnace lining integrity and support continuous production conditions.
Product Overview
AZS-33 bricks are fused cast refractory materials developed for glass furnace applications that require reliable corrosion resistance and high-temperature stability. These bricks are mainly composed of alumina (Al₂O₃), zirconia (ZrO₂), and silica (SiO₂), creating a dense refractory structure that provides effective protection against molten glass erosion.
AZS-33 corundum bricks offer good resistance to chemical corrosion, thermal stress, and glass penetration during continuous furnace operation. The alumina-rich composition provides excellent mechanical strength, while the zirconia phase improves resistance to molten glass attack and helps maintain stable performance in high-temperature environments.
AZS-33 bricks are commonly used in glass melting furnaces, including sidewalls, bottom structures, flow channels, and other areas exposed to direct contact with molten glass. Their stable chemical properties help reduce refractory wear and support consistent glass production quality.
LAR manufactures customized AZS-33 corundum bricks according to furnace structure, glass type, operating temperature, and service conditions. The products are produced with controlled raw materials and advanced fused casting technology to ensure reliable quality, long service life, and stable performance for demanding glass industry applications.
Key Features
Good Corrosion Resistance
AZS-33 Bricks resist erosion from molten glass. The zirconia phase improves chemical stability. The material performs reliably in glass contact zones.
Stable High Temperature Performance
AZS-33 corundum Bricks maintain stable properties at high temperatures. The material resists deformation during continuous furnace operation. The structure supports long service cycles.
Reliable Thermal Shock Resistance
The material adapts to temperature changes. The structure reduces cracking risk. The product performs well during heating and cooling cycles.
Strong Mechanical Strength
Each corundum brick provides sufficient load-bearing capacity. The dense fused structure supports heavy-duty use. The product maintains shape under stress.
Long Service Life
AZS-33 Bricks resist wear and chemical attack. The product lasts longer than many traditional refractory materials. Users reduce maintenance frequency and cost.
Typical Product Types
Manufacturers supply different types of azs-bricks:
· Standard AZS-33 Bricks
· AZS-33 corundum Bricks for glass contact areas
· Dense fused cast corundum brick blocks
· Customized shapes for specific furnace zones
Each type matches different operating conditions. Suppliers adjust composition and structure based on application needs.
Technical Characteristics
Item | Unit | Standard AZS-33 Brick | Dense AZS-33 Brick | Fused Cast AZS-33 Brick |
ZrO₂ Content | % | ≥32 | ≥33 | ≥33 |
Al₂O₃ Content | % | 50–53 | 50–52 | 49–51 |
SiO₂ Content | % | 13–16 | 12–15 | 11–14 |
Bulk Density | g/cm³ | 3.50–3.65 | 3.60–3.75 | 3.70–3.85 |
Apparent Porosity | % | ≤4 | ≤3 | ≤2 |
Cold Crushing Strength | MPa | ≥220 | ≥250 | ≥280 |
Refractoriness Under Load | °C | ≥1650 | ≥1680 | ≥1700 |
Glass Phase Exudation | % | ≤2.5 | ≤2.0 | ≤1.8 |
Thermal Expansion Coefficient | ×10⁻⁶/K | 5.0–6.0 | 4.8–5.8 | 4.6–5.5 |
Max Service Temperature | °C | 1650 | 1680 | 1700 |
Technical values may vary depending on product grade and application. Manufacturers provide detailed specifications when required.
Applications
AZS-33 Bricks are widely used in high-temperature glass industry applications:
· Glass Industry – melting tanks, sidewalls, and working ends
· Float Glass Furnaces – critical contact zones
· Container Glass Furnaces – lining systems
· Special Glass Furnaces – areas with chemical exposure
AZS-33 corundum Bricks improve furnace stability and glass quality. The material supports efficient and continuous production.
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Advantages Compared To Others
Type | Advantages | Application |
AZS-33 Bricks | Balanced performance, cost-effective, stable structure | General glass furnace zones |
Higher Grade AZS Bricks | Stronger corrosion resistance, higher zirconia content | Severe corrosion zones |
AZS-33 Bricks provide a practical solution for most standard furnace areas. The material offers a balance between performance and cost.
Customization & Manufacturing
A professional azs-bricks supplier provides customized solutions. The manufacturer adjusts AZS-33 Bricks based on:
· Furnace design and temperature
· Glass composition and chemical conditions
· Required shape and size
· Performance requirements
The electro-fusion casting process ensures consistent quality and precise dimensions. The product meets the needs of modern glass furnace operations.
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