Fused-cast AZS block (Al₂O₃≥48%, ZrO₂≥32%, bulk density ≥3.60 g/cm³, porosity ≤2%) is cast from the melt to near-zero porosity, giving outstanding resistance to glass-melt erosion and scouring.
| Al₂O₃ Content | ≥48% |
|---|---|
| ZrO₂ Content | ≥32% |
| Bulk Density | ≥3.60 g/cm³ |
| Apparent Porosity | ≤2% |
AZS bricks are dense electro-cast refractories of zircon sand and alumina: Al₂O₃ ≥48%, ZrO₂ ≥32%, bulk density ≥3.60 g/cm³ and apparent porosity ≤2%. Extremely dense with minimal glassy phase and stable crystallization, they lead the industry in glass-melt erosion and wash resistance—the critical material for glass tank walls, bottoms and throats. It is Henan Songrui's premium grade for the glass industry.
AZS is the recommended choice for direct glass-contact zones; select ZrO₂ content (33#/36#/41#) by zone. Grind and lay in tight packing to prevent glass leakage.
Grind, lay tightly with dedicated mortar; protect against impact cracking and control joints.
Henan Songrui New Refractory Materials Co., Ltd. (Xuanhua Town Industrial Park, Henan) is a 2024 Class A taxpayer and SRDI SME. For selection, quotation or installation, contact Manager Zheng (17513376789 / 17513376789@163.com).
Fused-cast AZS brick is the core refractory of glass furnaces:
Fused-cast AZS resists glass attack without contamination—used for walls and throat in direct glass contact.
Typically 33-41% ZrO₂ with service about 1700℃.
Glass-contact zones require AZS; non-contact hot zones can use corundum or mullite.
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