Castable Refractory Lining for CFB Boiler Factory – High‑Performance Thermal Protection
Product Overview
Our castable refractory lining for cfb boiler factory is engineered to meet the demanding thermal cycles of circulating fluidized‑bed (CFB) boilers used in power generation, cement clinker production, and steelmaking. Formulated from high‑purity alumina, magnesia, and proprietary binders, the material can be poured in‑situ to create a monolithic barrier that tolerates temperatures up to 1,800 °C, rapid load changes, and corrosive flue gases. The product is supplied in bulk bags or bulk‑truckload, ready for on‑site mixing and casting, delivering a seamless, crack‑resistant protection layer that minimizes downtime and extends boiler life.
Designed for turnkey projects and retrofits, the lining conforms to major international standards (ASTM C-852, ISO 9001) and can be customized for thickness, composition, and reinforcement according to your engineering specifications.
Technical Specifications (customizable per order)
| Parameter | Typical Range | Unit |
|---|---|---|
| Alumina Content | 45‑65 | wt % |
| Magnesia Content | 20‑35 | wt % |
| Maximum Service Temperature | 1,800 | °C |
| Cold Crush Strength | 5‑7 | MPa |
| Thermal Shock Resistance | > 150 °C/min | ΔT/min |
| Typical Mixing Ratio | 100 kg powder : 30‑35 L water | – |
| Density (dry) | 1.85‑2.05 | g/cm³ |
All values are typical; final performance can be tuned by adjusting raw‑material ratios, additives, or fiber reinforcement per project requirements.
Competitive Advantages
- Extended Service Life: Up to 30 % longer wear life compared with conventional ceramic bricks, reducing replacement cycles.
- Superior Thermal Shock: Engineered micro‑structure absorbs rapid temperature swings, preventing spalling.
- Easy Installation: Cast‑in‑place application eliminates the need for heavy lifting equipment and reduces on‑site labor.
- Custom Formulations: Tailorable alumina/magnesia ratios, fiber reinforcement, and low‑expansion additives to match specific boiler chemistry.
- Regulatory Compliance: Meets ASTM C‑852, EN 13070, and ISO 9001 quality management standards, simplifying project approvals.
- Logistics Flexibility: Packaged in 25 kg bags for small‑scale projects or bulk‑truckload for large plants, with temperature‑controlled storage options.
Installation & Handling Tips
1. Pre‑heat the substrate to 200‑300 °C to improve adhesion and reduce moisture shock.
2. Mix under controlled conditions – use clean, low‑hardness water and a high‑speed mechanical mixer for 5‑7 minutes to achieve a uniform slurry.
3. Pour in layers no thicker than 150 mm; allow each layer to cure for 30‑45 minutes before applying the next.
4. Maintain moisture during the first 24 hours by covering with insulated blankets or applying a fine mist.
5. Inspect for cracks after the initial cure; any defects should be repaired with the same castable mix before the boiler reaches operating temperature.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for the castable refractory lining?
We accept orders starting from 5 tons (approximately 200 bags). Larger projects benefit from bulk‑truckload pricing and dedicated logistics support.
Can the composition be customized for aggressive slag chemistry?
Yes. Our R&D team can adjust alumina/magnesia ratios, add calcium aluminate phases, or incorporate high‑temperature fibers to meet specific corrosive environments.
What is the typical lead time from order to delivery?
Standard lead time is 15‑45 days, depending on order size, customization level, and destination port. Expedited shipping is available upon request.
Do you provide a warranty on the refractory performance?
We offer a 12‑month performance warranty against premature cracking under normal operating conditions, subject to correct installation and adherence to our handling guidelines.