Mullite Insulation Brick

Mullite Insulation Brick

Mullite Insulation Brick


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%.

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Product detail

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℃

Package:Export wooden pallets and polyboard

Product Introduction

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.

Product Parameters

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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