Mullite Firebrick
Mullite Refractory Bricks
As a kind of high-grade refractory material, mullite refractory bricks are well-known because of high performance and wide applications.
Mullite bricks are manufactured from high purity mullite grains. Specially designed for applications that demand sufficient chemical and mechanical stability, strength at high temperatures and resistance to spalling, corrosion and flame impingement, the bricks are suitable for high temperature, high load applications, for instance at the hot end of regenerative chambers of glass melters, the superstructure of the furnace, and the arch of glass fiber melters.
Item | Specification | |||
JM65 | JM70 | JM75 | JM80 | |
Al2O3 % | ≥64 | ≥68 | ≥74 | ≥78 |
Fe2O3 % | ≤1.2 | ≤1.2 | ≤0.8 | ≤0.6 |
Apparent Porosity % | ≤18 | ≤18 | ≤18 | ≤17 |
Bulk Density g/cm3 | ≥2.45 | ≥2.50 | ≥2.60 | ≥2.75 |
Compressive Strength MPa | ≥55 | ≥60 | ≥65 | ≥70 |
0.2MPa RUL,℃ | ≥1560 | ≥1580 | ≥1650 | ≥1700 |
Permanent Linear Change, % 1500℃×2h | -0.4~+0.1 | -0.3~+0.1 | -0.2~+0.1 | |
Features of Mullite Bricks:
High refractoriness, creep resistance, volume stability.
High erosion & thermal spalling resistance.
Withstand oxidising and reducing atmosphere.
Main Applications of Mullite Refractory Bricks
Blast Furnace Hot Blast Stove Top
Blast Furnace Hot Blast Stove Bottom
Ceramic Sintering Furnace
Petroleum Cracking System Lining
Sulfuric Cracking Furnace
Fibrous Glass Furnance
