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High alumina brick

High alumina brick
Details

The high alumina bricks is divided into different kinds according to the content alumina and usage, they are widely used in glass furnace, blast furnace, hot blast stoves, electric arc furnace,cement kiln and other heat-engineering equipments.

Items/Models

Burned Bricks

Unburned Bricks

DL-80

DL-75

DL-65

DL80P

DL85P

BDL-80

BDL-75

BDL-65

DL80P-B

Al2O3 % min

80

75

65

75

80

80

75

65

70min

Fe2O3 % max




1.7

1.7




1.7

Refractoriness ℃ min






1780

1780

1770


Softening temperature under load KD ℃ min

1530

1520

1520



1530

1520

1470


Linear change rate after

reheating %(1500℃x2h)

0.2-0.4

0.2-0.4

0.2-0.4







Apparent porosity % max

Suspended roof

bricks

19

19

19

18

19

18

18

19

19

Skew angel bricks

21

21


18

19

20

20


19

Compressive strength

Mpa min

75

65

58.8

50

80

60

55

30

50

Thermal shock stability, times(1100℃ water cooling)

max






8

Application

Steel making electric furnace


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