185 5336 8358 sales@qunhuirefractory.com
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High Alumina Bricks
2022/11/12

  High Alumina bricks for general uses are made from bauxite of super quality, bonding chamotte and additives.

  Main Properties

Item

Index

Code

DL-48

DL-55

DL-65

DL-70

DL75

Al2O3  min, %

48

55

65

70

75

Refractoriness , min

1790

1793 

1760

1770 

1780

Refractoriness under load

(0.2MPa) , min

1360

1380 

1420

1430 

1440

Linear change after reheating

(1550, 2h) %

0 ~ -0.6

 

0 ~ -0.55

0 ~ -0.3

 

0 ~ -0.3

0 ~ -0.3

Apparent porosity max, %

21

19

19

19

18

Cold crushing strength  Mpa, min

40

45 

50

55

60

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