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High Alumina Bricks are produced with selected bauxite chamotte as main raw material, fired at 1450-1470 °C by advanced process with strict quality control.
High Alumina bricks have great features like high temperature performance, great corrosion and wear resistance, high bulk density, low iron content, etc. High Alumina bricks are extensively used in mining, metallurgy, cement, chemical and refinery and refractory industries.
These bricks are used in all kinds of industrial furnace and high temperature areas to prolong the lives of furnaces.
Typical High Alumina Bricks technical data Specs

 

High Alumina Bricks

HA-48

HA-55

HA-65

HA-70

HA-75

HA-80

HA-85

Al2O3 %

≥48

≥55

≥65

≥70

≥75

≥80

≥85

Fe2O3 %

≤2.5

≤2.5

≤2.0

≤2.0

≤2.0

≤2.0

≤1.8

Refractoriness °C

1760

1760

1770

1770

1770

1790

1790

Apparent porosity %

≤23

≤23

≤23

≤23

≤23

≤22

≤22

Bulk density g/cm3

2.30

2.35

2.40

2.40

2.46

2.68

2.72

Refractoriness under load 0.2MPa °C

1420

1470

1500

1510

1520

1530

1550

Cold crushing strength MPa

45

45

50

60

60

65

70

Permanent linear change %

1500 °C ×2h

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4