Mullite Insulation Brick

  • Mullite Insulation Brick

Product Description And Parameters

Main Composition:Al2O3+SiO2

Application:Insulation layer for various kinds of industrial furnaces

Al2O3:37-77%

Raw Material:Mullite

Standard Size:230*114*65 mm

Mullite Insulation Brick Main Composition:Al2O3+SiO2 Application:Insulation layer for various kinds of industrial furnaces Al2O3:37-77% Color:White Standard Size:230*114*65 mm Raw Material:Mullite Classification temperature:1260-1730℃

Mullite thermal insulation brick is a high alumina refractory with mullite (3Al2O3•2SiO2) as the main crystalline phase. Generally, the alumina content is between 37% and 77%.

Features
1. High temperature resistance.
2. Light weight.
3. Low thermal conductivity.
4. Energy saving.

Application
Mullite insulation bricks can be directly used in the lining of high-temperature kilns. At present, they have been widely used in the lining of shuttle kilns, roller kilns, glass and petrochemical kilns.

Item

JM23

JM26

JM28

JM30

JM32

Al2O3(%)

≧37

≧54

≧64

≧72

≧77

Fe2O3(%)

≦1.0

≦0.9

≦0.8

≦0.7

≦0.5

Classification Temperature(℃)

1260

1400

1510

1620

1730

Bulk Density(g/cm³)

0.55-1.0

0.8-1.0

0.85-1.0

≧1.0

≧1.25

Cold Crushing Strength (Mpa)

≧1.2

≧1.6

≧2.1

≧2.5

≧3.5
Modulus of Rapture (Mpa) ≧0.9 ≧1.4 ≧1.6 ≧2.1 ≧2.1
Thermal Expansion 1000℃ (%) 0.5 0.7 0.8 0.9 1.1
Reheating Linear Change (%) CT-30 ℃X 8H 1230℃-0.5 1400℃-0.5 1510℃-0.5 1620℃-0.9 1730℃-0.9

Thermal Conductivity (W/m.k)

400℃

0.14

0.27

0.32

0.41

0.49
600℃ 0.16 0.29 0.34 0.43 0.50
800℃ 0.18 0.31 0.36 0.44 0.51
1000℃ 0.20 0.33 0.38 0.45 0.53

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