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JUCOS Refractories > Shaped Refractories > Insulating Fire Bricks
Product Details

The bulk density of GM series lightweight heat-insulating brick is 0.6~1.25g/cm3. Working temperatures range from 900℃ to 1600℃ . Each grade of products has unique design to meet different thermal, physical and chemical demands.GM series lightweight heat-insulating bricks are made from good quality and super-pure raw materials, with strictly classified fillings according to their grades. These fillings can form a uniform pore structure after burnt during the process of manufacture.Each face of the brick is machined to the required accurate size.this material profitable by lessening fuel costs, construction costs and reducing the amount of time spent in the high temp furnace.


Features Of Insulating Fire Bricks

  • Lower thermal conductivity

  • Lower bulk density

  • Light weight character

  • Lower creep rate in high temp

  • Good thermal shock resistance performance

  • Higher temperate resistant with good refractoriness


Applications Of Insulating Fire Bricks

The refractory linings of hot surfaces or backing heat-insulating layers of other refractory materials. The refractory linings or heat-insulating materials of the industrial furnaces in the petroleum or chemical industries , such as , ethylene pyrolysis furnaces, tubular furnaces, reforming furnaces of synthetic ammonia, gas generators and high-temperature shuttle kilns, etc.


Specifications Of Insulating Fire Bricks

  • Alumina contents range from 40% to 80%

  • Widely used throughout metallurgical industry


Physical And Chemical Indicators For Insulating Fire Bricks


                                                     Brand   
 P
roperties                               

JM-23JM-26JM-28JM-30JM-32

Classification temperature  ()

1300

1400

1500

1550

1600

Bulk Density (g/cm3)

0.6

0.8

0.9

1.0

1.1

ColdCrushing Strength (MPa)

1.2

1.8

2.5

3.3

3.5

Modulus of rupture (MPa)

1.0

1.7

2.3

3.1

3.2

Permanent linear change (CT x24h)% 
     

0.6

0.6

0.8

0.9

1.01

Thermal Expansion(%) @ 1000℃

0.50

0.52

0.52

0.53

0.7

Thermal conductivity (W/m.k)

350

0.18

0.27

0.32

0.38

0.49

400

0.20

0.29

0.34

0.40

0.5

600

0.24

0.32

0.36

0.42

0.51

Chemical

Analysis(%)

Al2O3

40

56

67

73

77

Fe2O3

1.0

0.8

0.7

0.7

0.5

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