Silicon-Mullite Brick
Silicon-mullite brick (Al₂O₃≥55%, SiC≥20%) combines mullite thermal-shock resistance with SiC high thermal conductivity and wear resistance, with low conductivity for energy saving.
Al₂O₃ Content≥55%
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Mullite Brick
Mullite brick with mullite as the main phase (Al₂O₃≥75%, refractoriness ≥1850℃, RUL ≥1650℃) offers high-temperature volume stability with excellent thermal-shock and creep resistance.
Technical Data
| Al₂O₃ Content | ≥75% |
|---|---|
| Refractoriness | ≥1850℃ |
| RUL (0.2MPa) | ≥1650℃ |
| CCS | ≥80 MPa |
Description
Mullite Brick
Material System & Positioning
Mullite bricks are fired refractories of mullite chamotte or synthetic mullite: Al₂O₃ ≥75%, refractoriness ≥1850℃, load softening point ≥1650℃ and CCS ≥80 MPa. The mullite crystal phase gives excellent hot volume stability, creep and thermal shock resistance; neutral character suits many slags. It is Henan Songrui's professional grade for glass and ceramic kiln hot zones.
Key Performance
- Mullite crystal phase: stable hot volume.
- High load softening point: ≥1650℃, creep resistant.
- Thermal shock resistance.
- Neutral material: compatible with many slags.
Applications
- Glass: regenerator checkers, tank walls, breast wall hot sections.
- Ceramics: tunnel/roller kiln hot zones, kiln furniture.
- Steel & Iron: hot blast stove hot sections, reheating furnace roofs.
- Petrochemical: heater hot linings.
Selection Advice
Use for long-term hot load-bearing zones with temperature cycling; better creep/softening resistance than high-alumina, better economy than corundum. Lay with mullite mortar.
Installation & Maintenance
Lay with mullite mortar, tight joints; reserve expansion joints in hot load-bearing zones.
Quality Assurance
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).
Key Features
- Mullite main phase, volume-stable at high temperature
- High RUL and creep resistance
- Thermal-shock and acid/basic-slag resistance
- Common hot-zone material for glass and ceramic kilns
- Neutral, compatible with many slags
- Use with mullite mortar
Typical Applications
Mullite brick features excellent thermal shock and creep resistance:
- Glass: regenerator checkers, crowns, breast walls, forehearth linings.
- Ceramics: high-temperature kiln linings and furniture.
- Steel & Iron: upper hot blast stove checkers, reheating furnace roofs.
- Cement: preheater linings.
- Advantage: service up to 1700℃, low thermal expansion, good thermal shock resistance, high load softening point.
FAQs
Features of mullite brick?
Low thermal expansion, good thermal shock resistance and high load softening point for glass furnaces and hot blast stoves.
Glass furnace use?
Regenerator checkers, crowns, breast walls, forehearths up to 1700℃.
Mullite vs corundum brick?
Choose mullite for thermal shock resistance; corundum for higher temperature and slag attack.
Quotation & Custom Inquiry
Submit an inquiry or custom requirement for this product; reply within 24 hours
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