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High Alumina Bricks Refractory Brick for Kiln SK36

High alumina bricks are made by bauxite clinker and binder by crushing,mixing,shaping, drying and high temperature sintering.
Product Description

High alumina bricks are made by bauxite clinker and binder by crushing,mixing,shaping, drying and high temperature sintering.

The series of alumina bricks feature excellent high temperature mechanics and chemical corrosion resistance to acid and alkali basic solution. Its Al2O3 content various from 48% to 80%,The main components are corundum and mullite phases.

Item

Index

International code name

SK35

SK36

SK37

SK38

SK40

Al2O3 min %

48-55

55-65

65

75

80

Fe2O3 max %

2

2

2

2

2

Refractoriness ℃, min

1750

1770

1790

1790

1790

Refractoriness under load (0.2MPa) ℃, min

1420

1470

1500

1520

1530

Linear change on reheating (1500℃, 2h) %

+0.1~ -0.4

*1450℃

+0.1~ -0.4

+0.1~-0.4

+0.1~ -0.4

+0.1~ -0.4

Apparent porosity max %

24

23

23

22

20

Cold crushing strength Mpa, min

30

40

50

60

70

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