Poly Light High Alumina Brick from Xintai Refractory is a lightweight, energy-efficient insulating brick with high alumina content (≥60%). Designed for use in industrial kilns and furnaces, it offers excellent thermal insulation, low thermal conductivity, and stable high-temperature performance. This product is ideal for insulating layers in various thermal equipment, significantly reducing energy consumption and optimizing furnace performance.
Technical Specifications of Poly Light High Alumina Brick
| Item | Poly Light High Alumina Brick |
|---|---|
| Brand | Xintai |
| Al₂O₃ Content | ≥ 60% |
| Bulk Density | 0.4–1.35 g/cm³ |
| Specific Gravity | 0.4–1.35 |
| Porosity | 66%–73% |
| Cold Crushing Strength | 1–8 MPa |
| Refractoriness | ~1600ºC |
| Classification Temp. | Up to 1600ºC |
| Working Temperature | ≤ 1350ºC (in non-load-bearing use) |
| Moisture Content | ≤ 1.0% |
| Size | 230×114×65 mm (standard) / Custom sizes |
| Color | Light Yellow / Off-white |
| Sample | Free sample available worldwide |
Key Features
Lightweight & Energy Saving: Low bulk density with high porosity reduces furnace wall weight and energy loss.
Excellent Thermal Insulation: Maintains consistent kiln temperature, improving energy efficiency and product quality.
High Refractoriness: Withstands temperatures up to 1600°C without deformation or cracking.
Good Thermal Shock Resistance: Resists spalling and structural damage during rapid heating and cooling.
Customizable Strength: Mechanical properties can be adjusted based on different application needs.
Improved Safety & Longevity: High load softening temperature and low rebounding rate ensure long service life and operational safety.
Typical Applications
Poly Light High Alumina Bricks are widely used in:
Kiln Insulation Layer: Cement rotary kilns, ceramic roller kilns, electric porcelain drawers, resistance furnaces.
Non-Load Bearing Furnace Linings: Pyrolysis furnaces, hot air furnaces, industrial heating chambers.
Backup Layer for Refractory Bricks: Acts as a thermal insulation buffer to reduce heat loss and extend lining life.
⚠ Note: Not suitable for use as structural or load-bearing materials due to lower compressive strength compared to dense bricks.
Production Details
Poly Light High Alumina Bricks are manufactured through a carefully controlled process involving high-alumina raw materials, organic/inorganic binders, and pore-forming agents. The materials are mixed, shaped, and then fired at high temperatures to form a lightweight but strong insulating body. Strict quality control during each production stage ensures consistent performance across every batch.
Packing and Shipping Details
Packing: Export-standard fumigated wooden pallets with protective film wrapping; customized packaging available upon request.
Shipping: Optimized container loading for cost-effective transportation; available for sea, land, and air shipping globally.
Delivery Time: 7–15 working days depending on quantity and customization.
Frequently Asked Questions (FAQ)
Q1: What is the maximum temperature Poly Light High Alumina Bricks can withstand?
These bricks can handle temperatures up to 1600°C but are most suitable for insulation use at ≤1350°C.
Q2: Can these bricks be used in direct flame contact?
Yes, but only for applications that do not require high mechanical strength. Not suitable for load-bearing zones.
Q3. Are custom sizes or shapes available?
Absolutely. We support customization based on your drawings or thermal design requirements.
Q4: Do you provide free samples for testing?
Yes, free samples are available for quality testing and evaluation before ordering.
Q5: How do you ensure the quality of your bricks?
Each batch undergoes rigorous quality checks including chemical composition analysis, strength tests, and dimensional inspections.
