Zhengzhou Zhongkeda Refractory Materials Co., Ltd
Refractory Clay Insulation Brick
Insulating Fire Clay Brick Manufacturer | Lightweight Refractory Brick 1260-1400℃
Insulating Fire Brick is a lightweight refractory brick with excellent thermal insulation performance, low thermal conductivity and good resistance to high temperature. It is manufactured from high quality refractory clay and alumina materials through advanced forming and firing processes.
Compared with traditional fire clay bricks, insulating fire bricks have lower density and better energy-saving performance, making them suitable for the insulation layer and working lining of various industrial furnaces and kilns.
Technical Specifications
| Item |
NG-1.5 |
NG-1.3 |
<a href="https://www.zkdrefractories.com/e_productshow/?41-12-Lightweight-Fire-Clay-Insulating-Brick--High-Strength-IFB-41.html">NG-1.2</a> |
<a href="https://www.zkdrefractories.com/e_productshow/?40-10-Lightweight-Fire-Clay-Insulating-Brick--Thermal-Insulation-IFB-40.html">NG-1.0</a> |
<a href="https://www.zkdrefractories.com/e_productshow/?39-08-Lightweight-Fire-Clay-Insulating-Brick--Low-Density-IFB-39.html">NG-0.8</a> |
NG-0.6 |
NG-0.5 |
|
Bulk Density (g/cm³)≤ |
1.5 | 1.3 | 1.2 | 1.0 | 0.8 | 0.6 | 0.5 |
|
Cold Crushing Strength (MPa)≥ |
6 | 5 | 4.5 | 3.5 | 2.5 | 1.3 | 1.0 |
|
Permanent Linear Change on Heating/（%） |
1400℃*12h | 1350℃*12h |
1300℃*12h |
1250℃*12h |
1200℃*12h |
1150℃*12h |
|
|
-2~1 |
|||||||
|
Thermal conductivity W/(m•K)Mean temperature (350±25)℃ ≤ |
0.65 | 0.55 | 0.50 | 0.40 | 0.35 | 0.25 | 0.23 |
Key Features
•Lightweight Structure：Low bulk density reduces the overall weight of furnace lining and structural load.
•Excellent Thermal Insulation：Low thermal conductivity helps reduce heat loss and improve furnace energy efficiency.
•High Temperature Resistance：Suitable for continuous operation in various industrial heating environments.
•Good Thermal Stability：Excellent resistance to temperature changes during heating and cooling cycles.
•Easy Installation：Lightweight design makes transportation and installation more convenient.
•Customized Solutions：Different grades, sizes, and shapes are available according to furnace design requirements.
Typical Application
•Industrial Kilns：Used as insulation layers for ceramic kilns, tunnel kilns, and shuttle kilns.
•Heating Furnaces：Applied in furnace roofs, walls, and insulation zones.
•Cement Kilns：Used in non-working layers to reduce heat loss.
•Petrochemical Furnaces：Suitable for thermal insulation structures requiring low heat conductivity.
•Glass Furnaces：Used as insulation backing materials.
•Boilers and Thermal Equipment：Applied in high-temperature equipment insulation systems.
Why Choose Our Insulating Fire Clay Brick
•Direct Manufacturer：We manufacture lightweight refractory bricks with stable quality control.
•Customized Production：Custom sizes and shapes available according to drawings.
•Export Experience：Professional packaging and international shipping support.
•Technical Support：Provide material recommendations according to furnace conditions.
FAQ
Q:What is lightweight fire clay brick used for?
A:Lightweight fire clay bricks are mainly used for furnace insulation layers, kiln walls, roofs, and heat treatment equipment.
Q:What temperature can lightweight clay bricks withstand?
A:Depending on grade, lightweight clay bricks can withstand approximately 1260℃–1400℃.
Q:Are lightweight bricks better than normal fire bricks?
A:Lightweight bricks provide better insulation performance and lower heat loss, while normal fire bricks provide higher mechanical strength.
Q:Can you produce customized sizes?
A:Yes, customized dimensions and special shapes are available.
