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Home / News / Carbon Black Furnace Chrome Corundum Brick
Carbon Black Furnace Chrome Corundum Brick
AddTime:2017/3/9 17:29:13

The main mineral composition of carbon black furnace chrome corundum brick is α-Al2O3-Cr2O3 solid solution. Secondary mineral composition is a small amount of composite spinel (or without composite spinel with chromium oxide content of 1% to 30%. There are two kinds of cast chrome corundum brick and sintered chrome corundum brick. In general, chrome corundum brick refers to sintered chrome corundum brick.

 

carbon-black-furnace-chrome-corundum-brick
 

At present, the application of carbon black furnace chrome corundum brick has been more widely used, one is made of metal chromium slag as the main raw material made of chrome corundum brick, the products are widely used in zinc smelting furnace, volatile kiln, chrome corundum Bricks have excellent thermal stability and high temperature creep performance, while meeting the requirements of national recycling economy.

 

Item

High oxidation chrome brick

Medium chrome brick

Chrome corundum brick

Chrome corundum brick

Chrome corundum brick

Cr2O3 %

≥93

≥86

≥60

≥30

≥12

Al2O3 %

≤38

≤68

≤80

Fe2O3 %

≤0.2

≤0.2

≤0.5

Apparent porosity %

≤17

≤17

≤14

≤16

≤18

Bulk density g/cm3

≥4.3

≥4.2

≥3.63

≥3.53

≥3.3

Cold crushing strength MPa

≥100

≥100

≥130

≥130

≥120

Load softening starts the temperature ℃

(0.2MPa,0.6%)

≥1680

≥1670

≥1700

≥1700

≥1700

Reheating linear change %

±0.2

±0.2

±0.2

±0.2

±0.2

 
 

 

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