Refractory Bricks
insulating alumina corundum brick for metallurgy industry

insulating alumina corundum brick for metallurgy industry

Items

light weight Corundum Mullite Brick

Alumina bubble brick

Alumina bubble brick

Alumina bubble brick

Maximum  service  temperature, %

1630

1680

1700

1800

Al2O3,% ≥

75

90

96

99

Fe2O3,%

0.5

0.2

0.2

0.15

Buik density g/cm3

1.2-1.5

1.4-1.7

1.4-1.7

1.4-1.7

Cold crushing  strength MPa

8-10

≥ 20

≥ 20

≥ 19

bending strength MPa

4.5

5.8

5.8

 

After line change burning≤

0.38

-0.2

-0.2

±0.3

(1600 × 8 hour)

(1650×8hour)

(1650 ×8hour)

(1600× 8hour)

thermal expansion rate≤

0.56

0.67

0.67

8.6

(1000)

(1000)

(1000)

(1300)

thermal conductivity

0.8

1

1

1


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