Chrome Corundum Bricks

Good fire resistance

High compressive strength

High thermal shock stability

Strong resistance to slag erosion

  Description

Chrome corundum bricks are made from industrial alumina and calcined chromite raw materials, CrO3 content is usually between 9%~15%. Because Al2O3 and CrO3 contained in chrome corundum brick will form Al2O3-Cr2O3 Spinel solid solution at high temperature, high temperature performance of chrome corundum brick is very good. Chrome corundum bricks have better thermal shock resistance than corundum bricks. Their resistance to glass liquid corrosion is also very good, so chrome corundum bricks are often used in glass furnaces. 

Chrome Corundum Bricks Categories

By Cr2O3 content, chrome corundum bricks are classified into 12-chrome corundum bricks, 30-chrome corundum bricks, 60-chrome corundum bricks and so on.

By production carts, chrome corundum bricks are classified into fused chrome corundum bricks and fired chrome corundum bricks. 

  Technical Data:

The Specification of Chrome corundum brick

Items

Chrome-Corundum Brick

Al2O3 %

≤38

≤68

≤80

Cr2O3 %

≥60

≥30

≥12

Fe2O3 %

≤0.2

≤0.2

≤0.5

Bulk Density, g/cm3

3.63

3.53

3.3

Cold compressive strength  MPa

130

130

120

Refractoriness under Load (0.2MPa ℃)

1700

1700

1700

Permanent Linear Change(%) 1600°C×3h

±0.2

±0.2

±0.2

Apparent porosity  %

14

16

18

Application

High temperature industrial furnaces

 

  Application:

Chrome Corundum Bricks Application

Chrome corundum bricks are used in glass furnaces which are not sensitive to coloring. Besides, chrome corundum bricks are also widely used in steel ladles, carbon black reaction furnaces, nonferrous metals industry, fertilizer factory gasifying furnace and so on.

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