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Low Density Fireclay Brick

Low porosity fireclay bricks are made of high-quality charred gemstones as main raw materials, containing 30%-46% of alumina, with a refractoriness of 1580-1770°C, and are weakly acidic refractory materials.


It has characteristics of high strength, high refractoriness, low apparent porosity, good thermal shock stability, resistance to penetration, peeling, and good corrosion resistance.

It’s mainly used in iron and steel industry, hot blast stove, glass furnace regenerator chamber, petrochemical industry and other industries

Item DN-12 DN-15
Refractoriness SK 32 32
1770 1770
Chemical Composition % Al2O3   45 42
Fe2O3   1.2 1.5
Apparent Porosity% ≤ 12 15
Bulk Density g/cm3   2.37 2.30
Cold Crushing Strength Mpa ≥ 68 60
0.2Mpa Refractoriness Under Load T0.6 ℃ ≥ 1500 1470
Permanent Linear Change on Reheating(%) 1400℃ 2hour +0.05- -0.1 +0.0- -0.2

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