Huachen Refractory

Magnesia spinel brick for cement rotary kiln

        
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Insulating refractory brick

Insulating refractory brick has many type like high alumina insulating brick, mullite insulating brick, clay insulating brick, etc. Insulating material has two kind: light insulating material and thermal insulating material. And the insulating brick belong to light insulating material.

Other name: low thermal conductivity brick

Model Number: HCR JM23, HCR JM26, HCR JM28, HCR JM30, HCR JM32, HAI1.0, HAI0.9, HAI0.8, HAI0.7, HAI0.6,HAI0.5, NG-1.0, NG-0.8, NG-0.6

Certification: ISO9001-14001

Minimum Order Quantity: 5 MT

Insulating refractory brick

Introduction
Insulating refractory brick has many type like high alumina insulating brick, mullite insulating brick, clay insulating brick, etc. Insulating material has two kind: light insulating material and thermal insulating material. And the insulating brick belong to light insulating material.

Characteristic
The improvement of firebrick quality can reduce the invasion and penetration of slag, ensure the composition and structure of chemical minerals of firebrick, improve the co-melting temperature, reduce the corrosion of firebrick and stabilize the operation of equipment.
Mullite insulating brick can touches flame directly, it has high strength, low thermal conductivity, great energy saving features and so on, while high alumina insulating brick also can touches flame directly with temp no more than 1350℃.

Physical & Chemical Index

Insulating brick

Type

Al2O3 (%)

Bulk Density g/cm3

Cold Crushing Strength MPa

Permanent Linear Change On  Reheating%CT-30℃ X 8h

Thermal conductivity W/M.K

400℃

600℃

800℃

1000℃

 

 

Mullite brick

HCR JM23

37

0.58

1.2

1230℃-0.5

0.14

0.16

0.18

0.20

HCR JM26

58

0.8-1.0

1.6

1400℃-0.5

0.27

0.29

0.31

0.33

HCR JM28

67

0.8-1.0

2.1

1510℃-0.5

0.32

0.34

0.36

0.38

HCR JM30

73

1.0

2.5

1620℃-0.9

0.41

0.43

0.44

0.45

HCR JM32

77

1.2

3.5

1730℃-0.9

0.49

0.5

0.51

0.53

High alumina insulating brick

HAI1.2

48

1.2

5

1400

5  (350℃)

HAI1.0

1.0

3.92

1400

3.92 (350℃)

HAI0.9

0.9

3.43

1400

3.43 (350℃)

HAI0.8

0.8

2.94

1400

2.94 (350℃)

HAI0.7

0.7

2.45

1350

2.45 (350℃)

HAI0.6

0.6

1.96

1350

1.96 (350℃)

HAI0.5

0.5

1.47

1250

1.47 (350℃)

Clay insulating brick

NG-1.0

 

30

1.0

30

1350

0.50 (350℃)

NG-0.8

0.8

25

1250

0.35 (350℃)

NG-0.6

0.6

15

1200

0.25 (350℃)

Application
Mainly used for insulating layer of cement rotary kiln.



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