Grade 30 Kiln Insulating Fire Bricks

  • Description
Product Detail

oupled with high insulating efficiency expands the extensive applications of IFB in high-grade refractory powder and materials in good purity.
During the process of production ,organic and multiple filling materials are injected according to the required proportion ,the brick is compressed in vacuum and sintered under high temperature.
Features
Low thermal conductivity
High purity and low iron content
Good thermal resistance with direct access to fire
Superior thermal shock resistance
Accurate dimension and easy cutting
Typical Applications
Cracking Furnace
Conversion Furnace
Heating equipment
Refining equipment
Reproduction equipment
Hot Blast Stove

Description

Grade 23

Grade 26

Grade 28

Grade 30

Classification Temperature

1300C/2300F

1400C/2600F

1500C/2732F

1550C/2822F

Density(kg/m3)

600

800

900

1000

Cold Crushing Strength (MPa)

1.2

1.8

2.5

3.3

Modulus of Rupture(MPa)

1.0

1.7

2.3

3.1

Permanent Linear Change (%)x24hrs

=0.6

=0.6

=0.8

=0.9

Thermal Expansion  (%)1000C

0.5

0.52

0.52

0.53

Thermal Conductivity (W/m.k)

350C

0.18

0.25

0.33

0.38

400C

0.20

0.29

0.35

0.40

600C

0.24

0.32

0.37

0.42

Chemical Composition(%)

Al2O3

42

56

67

73

SiO2

55

41

30

24

Fe2O3

=1

=0.8

=0.7

=0.7

K2O+Na2O

1.1

1.7

1.7

1.7

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