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