High-Strength Wear-Resistant Refractory Castables are designed specifically for the demanding conditions found in Circulating Fluidized Bed (CFB) boilers, where high gas velocity, large material circulation rates, and high particle concentrations result in severe erosion and wear, especially in areas like the furnace lower dense phase zone, upper furnace, cyclone separator, and their entry/exit areas.
Traditional refractory linings used in standard boilers are often inadequate for the extreme wear conditions in CFBs. To meet these unique demands, Xintai refractory recommend a specialized wear-resistant refractory castable that features dense, high-strength aggregates combined with composite micro-powder and special additives. This advanced formulation ensures excellent bonding strength, exceptional wear resistance, and excellent dimensional stability.
Our High-Strength Wear-Resistant Refractory Castables are ideal for use in environments where abrasion and thermal shock resistance are critical. The high gas permeability, combined with the superior mechanical properties, ensures long-term reliability and performance in fluidized bed boiler systems.
Physicochemical Parameters
| Item | XT-70 | XT-75 | XT-80 | XT-85 |
| Al2O3 % ≥ | 70 | 75 | 80 | 85 |
| CaO % ≤ | 2.5 | 2.5 | 2.5 | 2.5 |
| Bulk density g/cm3 > | 2.6 | 2.75 | 2.8 | 2.9 |
| Crushing strength Mpa(1400℃, 3h) | >90 | >95 | >105 | >110 |
| Modulus of rupture Mpa(1400℃, 3h) | >13.0 | >13.5 | >15.0 | >16.0 |
| Room temperature abrasion loss cm3 | <9.6 | <8.5 | <7.3 | <6 |
| 0.2MPa, refractoriness under load beginning temperature ℃ | >1450 | >1490 | >1530 | >1560 |
| Thermal shock resistance(900℃, water cooling)/times | >20 | >20 | >20 | >20 |
| Max. working temperature ℃ | 1550 | 1550 | 1600 | 1600 |
| Reheating linear change rate % | <-0.3 | <-0.3 | <-0.2 | <-0.2 |
Product Features
- High Wear Resistance: Exceptional resistance to abrasion and erosion, making it perfect for high-wear applications like CFB boilers.
- Excellent Gas Permeability: Designed to handle high gas velocities without compromising structural integrity.
- Superior Bonding Strength: High initial and ultimate bonding strength, ensuring long-lasting durability under harsh operating conditions.
- Thermal Stability: Maintains stable performance and dimensional integrity under extreme temperature variations.
- Easy Construction: Offers excellent workability and construction performance, ensuring ease of application and repair.
- Volume Stability: Minimal volume change over time, ensuring long-term stability of the boiler linings.
Applications
High-Strength Wear-Resistant Refractory Castables are designed for use in high-stress applications, particularly in CFB boiler systems, and are ideal for:
- Lower Dense Phase Zone: Withstands intense wear and thermal stresses in the most demanding areas of the furnace.
- Upper Furnace & Outlet Regions: Protects high-wear areas from erosion and abrasion caused by high gas velocities.
- Cyclone Separator: Provides reliable protection in the separator areas, which are subject to severe erosion.
- Return Feeders: Ensures durable, stable linings in the return feed areas where wear is significant.
Customization Services
We offer tailored solutions for our High-Strength Wear-Resistant Refractory Castables to meet your specific needs:
- Custom Sizes: Designed to fit your specific application and boiler specifications.
- Special Shapes: Including custom brick shapes for complex furnace geometries.
- Performance Specifications: Custom formulations designed for different temperature, pressure, and erosion conditions.
Reach out to discuss your requirements, and we will work with you to provide a customized solution for your refractory needs.
Packing and Shipping Details
Our High-Strength Wear-Resistant Refractory Castables are carefully packed to ensure safe transport:
- Packaging Material: Durable, eco-friendly packaging to protect products during shipping.
- Bulk Orders: For large orders, products are palletized for added security.
- Custom Packaging: Available upon request to meet specific shipping or storage requirements.
About Xintai Refractory
Xintai Refractory is a leading manufacturer specializing in high-quality refractory materials designed for the most demanding high-temperature applications. With over 20 years of experience, we provide durable products, including refractory bricks, insulating bricks, and monolithic refractories. Our solutions are engineered for industries such as steel, cement, glass, ceramics, and non-ferrous metals.
We are committed to delivering excellent quality, cutting-edge innovation, and unmatched customer satisfaction. We offer customized solutions for all your high-temperature needs.
For further information or to request a quote, please contact us today!
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