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Mullite Brick

Main Composition:Al2O3

Application:Hot blast stove, arc furnace, cement kiln, etc

Main Raw Material:Mullite

Standard Size:230*114*65 mm

Refractoriness: above 1790℃

Standard:ISO 9001 & 14001

Product Introduction

Mullite brick refers to a high alumina refractory material with mullite as the main crystal phase. Generally, the alumina content is between 65% and 75%.Mullite bricks have high refractoriness, which can reach above 1790℃. Mullite bricks are pided into sintered mullite bricks and fused mullite bricks.


1.Long Service Life.
2.Low Linear Expansion Change.
3.Good Erosion and Corrosion Resistance.
4.High Compressive Strength.
5.Good Thermal Shock Resistance.


Mullite bricks are mainly used for hot blast stove top, blast furnace body and bottom, regenerator of glass melting furnace, ceramic sintering kiln, lining of petroleum system, etc.

Technical Data













          TiO2(%)            -            <=0.6            <=0.5

Bulk Density(g/cm3)




          Apparent Porosity(%)             <=19             <=19             <=19

0.2MPa Refractoriness Under Load(℃)




           Cold Crushing Strength(MPa)             >=60             >=70             >=75
           Thermal Shock Resistance (900℃, water cooling)(Cycles)             >=25             >=30             >=35
           Thermal Expansion Rate (20~1000℃)(%)             <=0.8             <=0.7             <=0.7

Permanent Linear Change   (1500℃&times;3h)(%)




          Creep Rate Testing Temperature            1350℃             1400℃              1450℃
0~50 hrs<=0.6
20~50 hrs<=0.2


The  standards  for  highest service  temperature  are  oxidizing atmosphere and intermittent furnace.