
Key Features:
Outstanding Thermal Insulation: The low bulk density and uniformly distributed pore structure give the product an extremely low thermal conductivity, effectively blocking heat transfer and significantly reducing heat loss from the furnace surface.
Excellent Thermal Shock Resistance: The porous structure provides the bricks with outstanding resistance to thermal shock. They do not crack or spall under frequent temperature fluctuations, making them suitable for areas prone to temperature variations, such as regenerators and flue systems.
Lightweight and Weight-Reducing: With a density of only 1/3 to 1/2 that of ordinary clay bricks, they can significantly reduce the load on the furnace’s steel structure, thereby lowering construction and maintenance costs.
Easy to Install: Standard, custom-shaped, and curved bricks are available to meet specific needs. They are easy to cut, allowing for high-efficiency masonry work and rapid adaptation to the kiln’s contours.
Cost-Effective and Energy-Efficient: Achieves significant energy savings with a low initial investment. The cost of the insulation layer is recouped in the short term, making it an effective thermal management solution for glass melting furnaces.
Applications:
Insulation for low-to-medium temperature areas not in direct contact with molten glass, including furnace wall backing, furnace bottom insulation, heat storage chamber exterior walls, flue lining insulation, chimney insulation, inspection hatches, and furnace door covers. Suitable for energy-saving masonry in all types of glass melting furnaces.

| Projects | Physical and chemical indicators | ||||||||
NG140- 1.5 | NG135- 1.3 | NG135- 1.2 | NG130- 1.0 | NG125- 0.8 | NG120- 0.6 | NG115- 0.5 | |||
| Bulk density/(g/cm3) | ≤ | 1.5 | 1.3 | 1.2 | 1.0 | 0.8 | 0.6 | 0.5 | |
| Compressive strength at room temperature/Mpa | ≥ | 6.0 | 5.0 | 4.5 | 3.5 | 2.5 | 1.3 | 1.0 | |
| Heating Permanent Line Change/% | Test conditions | 1400℃× 12h | 1350℃×12h | 1300℃× 12h | 1250℃× 12h | 1200℃× 12h | 1150℃× 12h | ||
| Xmin~Xmax | -2~1 | ||||||||
Thermal conductivity/[W/m.K] Average temperature (350±25) °C | Xmax | ≤ | 0.65 | 0.55 | 0.50 | 0.40 | 0.35 | 0.25 | 0.23 |