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Mullite brick

Mullite brick is a type of high alumina brick, which is one of the silica alumina series refractory products, which is mainly composed of mullite.

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Mullite brick

Mullite brick

 

Mullite brick belongs to high alumina refractory brick, which is a kind of high-grade high alumina brick. Generally, alumina content is between 60% – 75%, which is a high alumina refractory with mullite as the main crystal phase.

 

Mullite brick (also called mullite refractory bricks) is a kind of fine refractory material, with stable expansion, good thermal stability, high RUL capacity, low creep under high temperature, anti-chemical erosion ability, and have a hard texture.

 

Physical and chemical indexes of mullite brick

 

ltem

Mullite Brick

Al2O3,% ≥

70

65

60

Fe2O3,% ≤

0.8

1.2

1.5

Apparent Porosity,% ≤

19

19

19

Bulk Density,g/cm3 ≥

2.65

2.6

2.5

Compressive Strength,Mpa ≥

75

70

60

Softening Temperature Under Load 0.2Mpa,℃

1650

1600

1550

 

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