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Insulating Firebrick HJM

Insulating Firebrick HJM
HJM insulating firebrick is manufactured from high grade refractory powder and materials in good purity. During the process of production, some organic and multiple filling materials are added according to the specific requirement proportion.
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HJM Series

Contact Us

Greenergy Refractory and Insulation Material Co., Ltd

Mob/WhatsApp: +86 18326532627

Email:info@greenergyrefractories.com

HJM insulating firebrick is manufactured from high grade refractory powder and materials in good purity. During the process of production, some organic and multiple filling materials are added according to the specific requirement proportion. By compressed in vacuum and sintered under high temperature, the brick has typical advantages including low thermal conductivity, good thermal shock resistance, low heat capacity and low iron content as well as outstanding mechanical flexibility which has extensive applications in variety of industrial markets.

Applications

Cracking furnace

Conversion furnace

Heating equipment

Refining equipment

Hot Blast Stove

Ceramics kiln 

Features

Low thermal capacity

low thermal conductivity

Excellent thermal stability

High purity and low iron content

Excellent thermal resistance

Direct access to fire

Accurate dimension and easy cutting   

Description

 

HJM-23

HJM-26

 

HJM-28

 

HJM-30

 

HJM-32

23C

23

        25

 26

26A

Chemical content(As Received Basis):

Al2O3

37

38

42

42

48

64

71

78

SiO2

47

59

54

54

48

33

26

20

Fe2O3

0.5

1.1

1

0.9

0.9

0.75

0.6

0.4

CaO+MgO

13.8

/

/

/

/

/

/

/

Na2O+K2O

1.5

/

/

/

/

/

/

/

Physical properties

Density (g/cm3)

0.49

0.60

(37.5pcf)

0.80

(49.9pcf)

0.80

(49.9pcf)

0.80

(49.9pcf)

0.9

(56.2pcf)

1.03

(64.3pcf)

1.3

(81.2pcf)

Classification

Temperature(℉)

2300

2300

2500

2600

2600

2800

3000

3200

Cold Rushing Strength (MPa)

1.5

1.0

(145psi)

2.4

(348psi)

2.4

(348psi)

2.4

(348psi)

2.5

(363psi)

2.5

(363psi)

4.0

(581psi)

Modulus of

Ruputre (MPa)

1.0

0.7

(102psi)

1.5

(218psi)

1.5

(218psi)

1.5

(218psi)

1.5

(218psi)

1.8

(361psi)

2.0

(290psi)

Permanent Linear

Change(%)

1230℃

(2250℉)

X24h

-0.1

1230℃

(2250℉)

X24h

-0.2

1350℃

(2462℉)

X24h

-0.5

1400℃

(2552℉)

X24h

-1

1400℃

(2552℉)

X24h

-0.6

1510℃

(2750℉)

X24h

-0.6

1630℃

(2948℉)

X24h

-0.8

1730℃

(3146℉)

X24h

0.8

Thermal Conductivity(W/m.k)

400℃(752℉)

0.14

0.18

(1.25**)

0.27

(1.87**)

0.28

(1.94**)

0.27

(1.87**)

0.31

(2.15**)

0.42

(2.91**)

0.50

(3.46**)

600℃(1112℉)

0.16

0.20

(1.39**)

0.30

(2.08**)

0.31

(2.15**)

0.30

(2.08**)

0.34

(2.36**)

0.43

(2.98**)

0.51

(3.53**)

800℃(1472℉)

0.18

0.23

(1.60**)

0.33

(2.29**)

0.35

(2.42**)

0.33

(2.29**)

0.37

(2.56**)

0.44

(3.05**)

0.53

(3.67**)

1000℃(1832℉)

0.21

0.26

(1.81**)

0.37

(2.56**)

0.39

(2.70**)

0.36

2.49**)

0.40

(2.77**)

0.48

(3.33**)

0.56

(3.88**)

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HJM

HJM series