Home » Products » Shaped Refractories » Refractory Brick (Mullite Brick, Zircon Brick, High Alumina Brick, Fireclay Brick)

Refractory Brick

High Alumina Brick Mullite Brick

Mullite brick is made of synthetic fused mullite or sintered mullite, formed by high pressure and high temperature, its main mineral composition is crystal structure of mullite. This refractory brick features of high structural strength, low creep, and excellent thermal shock resistance. It is mainly used in hot blast furnace, branch pipe and chamber wall of large furnace.

Technical Parameters
Name Fire clay brick Mullite brick
Model XN-52 XRL-155 XRL-150 XRL-145 XRL-140 XRL-135 XRL-130 XRL-127
Al2O3 % ≥42 ≥75 ≥80 ≥65 ≥65 ≥65 ≥60 ≥50
Fe2O3 % ≤1.5 ≤1.5 ≤1.5 ≤1.5 ≤2 ≤2 ≤2 ≤2
Apparent porosity % ≤15 ≤20 ≤21 ≤19 ≤23 ≤23 ≤23 ≤23
Density g/cm3 ≥2.6 ≥2.7 ≥2.45 ≥2.4 ≥2.4 ≥2.35 ≥2.35
Cold Crushing Strength (CCS) Mpa ≥50 ≥60 ≥55 ≥60 ≥50 ≥45 ≥45 ≥45
Refractoriness ℃ ≥1730 ≥1850 ≥1850 ≥1850 ≥1820 ≥1790 ≥1790 ≥1790
0.2Mpa Softening point T2              
≥1500
Creep rate × 50h 0.2Mpa %*()℃ ≤0.8 ≤0.8 ≤0.8 ≤0.8 ≤0.8 ≤0.8 ≤0.8
-1550 -1500 -1450 -1400 -1350 -1300 -1270
Inquiry Form