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Refractory Brick

Unshaped Refractory

CONTACR US

JM30 Insulation Brick

  • JM30 Insulation Brick

1.Light weight.

2.Impervious.

3.Heat insulation.

4.Small shrinkage value.
JM30 Insulation Brick Introduce
 
JM30 Insulation Bricks are made from high-purity refractory clays with gradually increasing aluminum oxide content and are carefully saturated with organic filling, which then burns out during the production process, resulting in a homogeneous, controlled porous structure. To achieve required tolerance, all six walls of each brick are mechanically processed.
 
Application of JM30 Insulation Brick
 
JM30 Insulation Brick should be used as the first layer of a refractory lining or as back insulating layer behind all other refractory layers in furnaces, bakes, fire channels, refining chambers and heat furnaces, regenerators, gas production plants and conduits, intended furnaces, stress-relieving furnaces, reactor chambers and similar high-temperature industrial devices.
 
JM30 Insulation Brick Specification
 
JM Series Insulating Firebrick Performance Parameter
Items FJM23L FJM-23 FJM-25 FJM-26 FJM-28 FJM-30 FJM-32
Classification Temperature (℃) 1260 1260 1350 1430 1540 1600 1650
Bulk Density
(kg/m3)
500 550 800 780 880 1000 1200
Cold Crushing Strength
(MPa)
1.2 1.3 1.8 2.5 2.8 3.0 3.8
Modulus of Rupture
(MPa)
0.9 1.0 1.2 1.4 1.7 1.8 2.0
Reheating Linear Change
(%)
@℃×12h
-0.3
(1230)
-0.2
(1230)
-0.5
(1350)
-0.6
(1400)
-0.8
(1500)
-0.8
(1600)
-0.7
(1650)
Thermal
Conductivity
(W/m.K)
400℃ 0.17 0.19 0.21 0.21 0.30 0.40 0.43
600℃ 0.19 0.23 0.27 0.27 0.32 0.42 0.50
800℃ 0.22 0.24 0.30 0.30 0.35 0.44 0.51
1000℃ 0.24 0.25 0.32 0.32 0.38 0.45 0.53
1200℃ -- -- -- 0.35 0.39 0.47 0.55
Chemaical
Composition
(%)
Al2O3 42 45 45 55 65 72 75
SiO2 54 54 51 41.5 32.5 25.7 23
Fe2O3 0.8 0.8 0.9 0.8 0.6 0.5 0.4
Ti02 1.2 1.2 1.3 1.0 0.7 0.7 0.6
Cao+Mg0 0.7 0.7 0.7 0.7 0.5 0.5 0.3
Na2O+k2O 1.3 0.3 1.1 1.0 0.9 0.8 0.7
 
Remarks:
All data above are average test relusts, which can be adjusted according to application request.
For more information, contact our sales engineer.