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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.
Al₂O₃ Content≥75%
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Andalusite Brick
Andalusite brick (Al₂O₃≥70%, RUL ≥1600℃, thermal-shock stability ≥10 cycles) exploits mullitization micro-expansion for high-temperature volume stability and outstanding creep resistance.
Technical Data
| Al₂O₃ Content | ≥70% |
|---|---|
| RUL (0.2MPa) | ≥1600℃ |
| Thermal Shock | ≥ 10 cycles |
| CCS | ≥75 MPa |
Description
Andalusite Brick
Material System & Positioning
Andalusite bricks are mullitized fired refractories of andalusite: Al₂O₃ ≥70%, load softening point ≥1600℃, thermal shock stability ≥10 cycles and CCS ≥75 MPa. Mullitization with slight micro-expansion gives stable hot volume, creep and thermal shock resistance for hot blast stoves and torpedo cars under frequent temperature swings. It is Henan Songrui's professional grade.
Key Performance
- Mullitization micro-expansion: stable hot volume, creep resistant.
- Thermal shock resistance: suits frequent heating/cooling.
- Load-bearing: ideal for arches under temperature cycling.
- High strength: CCS ≥75 MPa.
Applications
- Steel & Iron: hot blast stove domes/walls, torpedo cars, mixers.
- Glass/Ceramics: hot load-bearing zones.
- Petrochemical: heater roofs.
Selection Advice
Andalusite, silica and high-alumina bricks form a zoned hot blast stove system: andalusite for domes and hot load-bearing zones, high-alumina for medium-low zones. Lay with andalusite mortar.
Installation & Maintenance
Lay with andalusite mortar, tight joints; match arch shapes and reserve expansion joints.
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
- Andalusite mullitizes with slight hot expansion
- High-temperature volume stability and creep resistance
- Thermal-shock resistance for stoves and torpedo ladles
- For load-bearing arches with frequent swings
- Material grading with silica and high-alumina bricks
- Use with andalusite mortar
Typical Applications
Andalusite brick uses mullitization micro-expansion for thermal shock and creep resistance:
- Steel & Iron: hot blast stove domes and hot zones, mixer linings, torpedo cars, hot metal ladle permanent layers.
- Coking: coke oven doors and ends.
- Glass/Ceramics: high-temperature structural zones.
- Advantage: service up to 1600℃, micro-expansion offsets shrinkage, low creep for long-term hot service.
FAQs
Why is andalusite brick popular?
Mullitization with micro-expansion offsets shrinkage and creep, giving excellent thermal shock resistance and long life.
Applications?
Hot blast stove domes, mixers, torpedo cars, ladle permanent layers, coke oven doors.
Temperature rating?
About 1600℃ with stable long-term volume.
Quotation & Custom Inquiry
Submit an inquiry or custom requirement for this product; reply within 24 hours
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