Insulation Fire Bricks (IFB) are lightweight, high-temperature resistant bricks designed to provide excellent thermal insulation in furnaces, kilns, and industrial heating equipment. They reduce heat loss, improve energy efficiency, and offer good mechanical stability.
Thermal insulation brick: JM23, JM26, K23, K26, etc.
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Insulation Fire Bricks (IFB) are specially engineered refractory bricks with low thermal conductivity, lightweight structure, and excellent high-temperature performance. Made from high-quality alumina-silica materials or other insulating refractory raw materials, IFBs are designed to minimize heat transfer while maintaining sufficient mechanical strength for installation and operation.
IFBs are widely used in the construction of industrial furnaces, kilns, boilers, and other high-temperature equipment. They help conserve energy, reduce operational costs, and protect the structural integrity of furnace linings. Insulation Fire Bricks are suitable for applications involving intermittent heating, thermal cycling, or high-temperature processing where energy efficiency and thermal management are critical.
| Brand | JM23/K23 | JM26/K26 | JM28/K28 | JM30/K30 | JM32/K32 | |
| IFB2300 | IFB2600 | IFB2800 | IFB3000 | IFB3200 | ||
| Classification Temperature (℃) | 1260 | 1430 | 1540 | 1650 | 1760 | |
| Bulk Density (g/cm3) | 0.55-0.62 | 0.78-0.8 | 0.88 | 1.03 | 1.25 | |
| Cold Crushing Strength (Mpa) | 1.2 | 1.6 | 2.1 | 2.5 | 3.5 | |
| Modulus of Rupture (Mpa) | 0.9 | 1.4 | 1.6 | 2.1 | 2.1 | |
| Reheating Linear Change (%) | 1230℃ | 1400℃ | 1510℃ | 1620℃ | 1730℃ | |
| CT-30 ℃X 8H | -0.5 | -0.5 | -0.5 | -0.9 | -0.9 | |
| Thermal Expansion 1000℃（%） | 0.5 | 0.7 | 0.8 | 0.9 | 1.1 | |
| Thermal conductivity（W/m.k） | 400℃ | 0.14 | 0.27 | 0.32 | 0.41 | 0.49 |
| 600℃ | 0.16 | 0.29 | 0.34 | 0.43 | 0.5 | |
| 800℃ | 0.18 | 0.31 | 0.36 | 0.44 | 0.51 | |
| 1000℃ | 0.2 | 0.33 | 0.38 | 0.45 | 0.53 | |
| Al2O3 (%) | 37 | 54 | 64 | 72 | 77 | |
| Fe2O3 (%) | 1 | 0.9 | 0.8 | 0.7 | 0.5 | |
Insulation Fire Bricks are commonly used in:
Industrial furnaces: steel, non-ferrous metals, and foundry furnaces
Kilns: ceramic, cement, lime, and chemical kilns
Boilers: thermal power plants, industrial boilers
Glass industry: melting furnaces and regenerators
Petrochemical industry: cracking furnaces, reformers, high-temperature reactors
Heat treatment furnaces and thermal processing equipment
Applications requiring energy conservation and high-temperature insulation
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