Oreworld trade (Tangshan) co., Ltd

High Alumina Insulation Brick

Product Details:

High alumina insulation brick Character:
High refractoriness, good heat-resistant ability and the chemical stability is good under the reducing atmosphere. The application temperature is 1350~1500℃, and the high pure product's application temperature may reach 1650~1800℃.
High quality of high alumina insulation brick can be used as the linings that directly contact the fire however it can not be used in the place where eroded by slag directly. Because the high alumina insulation brick is of good stability under reduction condition it is widely used as the inner insulation layer in the furnace that protected by hydrogen or carbon monoxide atmosphere.

The standard for High alumina insulation brick

1. High alumina insulation brick Main Characters: High refractoriness, low density, high cold crushing strength and low thermal conductivity, make it save the industrial furnace’s energy very much.
2. High alumina insulation brick Applications:
High alumina insulation brick is widely used to build the thermal insulating layers of many kilns and
the linings of industrial kilns, which working temperature is less than 1350℃.
3. High alumina insulation brick Physical and Chemical Index

Chinese standard

 Explained: The operating temperature cannot surpass the test temperature 

Item

Index

LG-1.3

LG-1.0

LG-0.8

LG-0.6

AL2O3% Min

48

48

48

48

Fe2O3%, Max

2.0

2.0

2.0

2.0

Bulk Density, g/cm3 Min

1.3

1.0

0.8

0.6

Cold Crushing Strength MPa

Standard

 

3.9

2.9

2.0

Test Value

8.0

4.5

3.5

3.0

Test temp linear change within 2on reheating

1450

1400

1400

1350

Thermal conductivity 350±25W/m.k

0.60

0.50

0.35

0.30

 4. High alumina insulation brick Physical and Chemical Index

Japnese standard

Item

Testing temperature when reheated with 2% contracting rate

Bulk, density g/cm³

Compress strength MPA

Testing temperature when reheated with 2% contracting rate

C
Series

C1

1300

≤1.10

≥5

≤0.30

C2

1400

≤1.20

≥7

≤0.38

C3

900

≤1.25

≥10

≤0.45

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