Zircon Mullite Burner Feeder Brick
A thermal shock resistant feeder brick working where the burner flame strikes directly.
Service temperature
1500–1650 °C
Related sectors
About this product
The burners that trim temperature along the channel create very fast, localised temperature swings in the brick the flame strikes. An ordinary brick cracks quickly in that spot. Burner feeder bricks are produced from a zircon mullite composition with deliberately low thermal expansion and their face is shaped to the flame angle.
Material
Zircon mullite is a mullite matrix reinforced with zircon (ZrSiO₄). In contact with molten glass it shows low wettability and sound corrosion resistance while keeping the melt clean. It is the standard choice for forehearth channel blocks, spouts, feeder expendables, vitrified supports and gob delivery blocks.
Applications
- Brick courses facing the burners
- Temperature trim sections
- Conditioning zone sidewalls
Technical data
- ZrO₂ content
- 18% – 32%
- Service temperature
- 1500 – 1650 °C
- Density
- 2.8 – 3.3 g/cm³
Values are typical ranges for the material family; a batch-specific analysis certificate can be requested.
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