CASI Nano Insulation Board is a new type of refractory insulation material. It is primarily made from modified perlite, α-Al₂O₃ micropowder, and silica sol, which are mixed evenly in a high-speed mixer, then pressed into shape using steel molds. After demolding, the boards are naturally set for a period and then baked at controlled temperatures.
This product combines the high strength of refractory bricks with the low thermal conductivity of insulation fiber, offering the best of both worlds. It features low bulk density, excellent thermal insulation, and high mechanical strength.
In addition, it is easy to install, harmless to human health, environmentally friendly, and offers a long service life. CASI Nano Insulation Board provides a new, energy-saving solution for industrial kilns and furnaces and serves as a reliable material foundation for optimizing the structure and improving energy efficiency in traditional thermal equipment.
Density: 0.3–0.6 g/cm³
Thermal Conductivity: As low as 0.1 W/(m·K) @ 400°C
Cold Crushing Strength: High (up to ≥1.2 MPa)
Permanent Linear Change (PLC): ±0.5% after 12h at working temperature
Max Working Temperature: Up to 1250°C (B1250 Grade)
A) Low Thermal Conductivity, Excellent Insulation Performance
CASI Nano Insulation Board forms a microporous structure at high temperatures, significantly reducing its thermal conductivity. At 400°C, the thermal conductivity is below 0.1 W/(m·K)—more than three times better than standard lightweight insulation bricks.
B) Low Bulk Density and Low Heat Storage
Under the same working temperature, CASI Nano Insulation Board offers over 35% lower bulk density compared to conventional lightweight bricks. This significantly reduces the overall weight of thermal equipment and the heat storage of kiln linings, leading to better energy savings.
C) Minimal Dimensional Deviation and High Flatness for Precision Lining
Manufactured under strict process controls, the CASI boards have very low dimensional deviation and high surface flatness, making them suitable for precision insulation lining construction.
D) Free of Organic Binders, Chemically Stable, Long Service Life
The product contains no organic binders, ensuring chemical stability and extended operational life in high-temperature environments.
E) Reliable Quality, High Output, Short Lead Time
Produced on a fully automated continuous production line—including automated batching and pressing—the manufacturing process ensures high efficiency, stable quality, and large-scale output. This enables short lead times, even for large-scale industrial projects.
F) Excellent Machinability and Easy Installation
CASI Nano Insulation Board can be easily cut, shaped, or joined as needed. With low bulk density, the boards are easy to lay and assemble, helping reduce labor intensity and improve construction efficiency.
CASI Nano Insulation Board can be used as a refractory insulation layer in various thermal equipment, including heating furnaces, hot blast stoves, heat treatment furnaces, smelting furnaces, flue systems, and hot air pipelines.
Application area: Insulation and working layers of the kiln wall and base
Replaces: Lightweight mullite bricks, lightweight fireclay bricks, ceramic fiber backup boards
Advantages: Lower outer wall temperature, higher energy efficiency, reduced overall equipment weight, and better cost-performance ratio
CASI Board Application in Roller Kilns for the Ceramic Industry
CASI Board Application in Roller Kilns for the Ceramic Industry
Application area: Insulation layer of large hot air pipelines
Replaces: Lightweight fireclay bricks, lightweight high-alumina insulating bricks
Advantages: Lower surface temperature, improved energy savings, reduced system weight, and greater economic value
CASI Board Application in Hot Air Ducts
CASI Board Application in Hot Air Ducts
Application area: Insulation layer of large hot blast stoves
Replaces: Lightweight fireclay bricks, ceramic fiber backup boards
Advantages: Lower outer wall temperature, higher thermal efficiency, lighter equipment structure, and better overall value
CASI Boards 1200 and 1100 Grade for Hot Blast Stove Applications in the Chemical Industry
CASI Boards 1200 and 1100 Grade for Hot Blast Stove Applications in the Chemical Industry
Assuming the internal temperature of a thermal device is 900°C, the external ambient temperature is 30°C, and the test is conducted under no wind conditions, we compare the performance of CASI Nano Insulation Board (Grade Z1000) with a commonly available lightweight insulation brick of similar price.
Two test conditions are used:
With a 300mm-thick wall, the surface temperature using CASI Nano Insulation Board is 70°C,
While the surface temperature using a conventional lightweight insulation brick is 83°C.
Temperature difference: 83°C – 70°C = 13°C
Result:
At the same wall thickness and similar price point, CASI Nano Insulation Board reduces the exterior wall temperature by 18.57% compared to standard insulation materials.
To achieve an 80°C surface temperature, only 210mm thickness of CASI Nano Insulation Board is required,
Whereas a 330mm thickness of conventional lightweight insulation brick is needed.
Wall thickness saved: 330mm – 210mm = 120mm
Result:
To reach the same outer wall temperature, CASI Nano Insulation Board saves up to 57.14% in wall thickness, providing space efficiency and material cost advantages.
CASI Nano Insulation Board is a reliable and forward-looking insulation solution for industries seeking to enhance energy efficiency and reduce system weight. Whether used in roller kilns, hot blast stoves, or thermal ducts, it offers measurable advantages in performance, lifespan, and total cost of ownership.
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