JM23/JM26 Insulating Mullite Fire Brick Thermal Insulation In Industrial Furnace
Laurel supply several grades of mullite insulating brick for use in applications from 1260°C to 1760°C.Each grade of brick is formulated to meet specific thermal and physical requirements.After firing each brick is machined to close dimensional tolerances.Insulating bricks are manufactured utilising exceptionally high purity clays and other ceramic materials.The carefully graded organics which are used during the manufacturing process burn out during firing to give a uniform pore structure.
Our Mullite Fire Brick is a premium-grade insulating block specially engineered for industrial high-temperature applications. Composed primarily of mullite phase alumino‑silicates, this advanced mullite brick delivers outstanding thermal stability, low thermal expansion, and excellent resistance to thermal shock and slag erosion.
Available in a variety of sizes and standard thicknesses, these mullite refractory bricks are ideal for the linings of kilns, rotary furnaces, incinerators, and other harsh high‑heat environments. With high refractoriness and superior mechanical strength, our mullite brick ensures long service life and consistent performance.
| Item | JM23 | JM26 | JM28 | JM30 |
| AL2O3(%) | 38-44 | 50-58 | 65-70 | 70-73 |
| Fe2O3(%) | 1.0 | 0.9 | 0.8 | 0.7 |
| Classification Temperature (°C) | 1350 | 1430 | 1540 | 1600 |
| Bulk Density (g/cm3) | 0.8-1 | 0.8-1 | 0.8-1 | 0.8-1 |
| Reheating Linear Change (%) CT-30 °CX 8H | 1250°C -0.5 | 1400°C -0.5 | 1500°C -0.5 | 1550°C -0.5 |
| Cold Crushing Strength (Mpa) | 2.0-3.5 | 2.0-3.5 | 2.0-3.5 | 2.0-3.5 |
| Modulus of Rupture (Mpa) | 1.5 | 1.7 | 1.8 | 2.0 |
| Thermal conductivity400°C(W/m.k) | 0.25 | 0.27 | 0.32 | 0.41 |
| Thermal Expansion1000°C(%) | 0.5 | 0.7 | 0.8 | 0.9 |
B C serises:
| Item | B-1 | C-1 | C-2 |
| AL2O3(%) | 25-30 | 35-40 | 45-50 |
| Fe2O3(%) | 2 | 1 | 1 |
| Classification Temperature (°C) | 1000 | 1300 | 1400 |
| Bulk Density (g/cm3) | 0.8-1 | 0.8-1 | 0.8-1 |
| Cold Crushing Strength (Mpa) | 2-2.5 | 2.5-3.5 | 3.0-4.5 |
| Thermal conductivity400°C(W/m.k) | 0.17 | 0.23 | 0.25 |
Key advantages of our Mullite Fire Brick:
Operating temperature up to 1600 °C
Low creep and exceptional dimensional stability
Excellent resistance to chemical attack and slag damage
Uniform density and high compressive strength
Easy to cut and install for precise furnace fit
Whether you require standard mullite refractory bricks or customized shapes and sizes, our production supports tailored solutions. We maintain strict quality control to deliver consistent thermal properties and mechanical reliability.
Application :
Primary hot face linings
Back-up insulation for furnaces and kilns
Flue insulation
Sulphur recovery
Enhance the efficiency and longevity of your high‑temperature installations with high‑quality Mullite Fire Brick. Contact us today for more information on available options and pricing for mullite brick and mullite refractory bricks suited to your industrial furnace requirements.
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