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Home / News / Steel Groove Brick
Steel Groove Brick
AddTime:2017/2/3 10:47:37

The main mineral composition of the steel groove platform brick is α-Al2O3-Cr2O3 solid solution. The secondary mineral composition is a small amount of composite spinel (or without composite spinel), the content of chromium oxide 1% to 30%. There are casting chrome corundum bricks and sintered chrome corundum.

 

At present, the application of steel groove brick has a wider application, one kind is made of metal chromium slag as the main raw material called chrome corundum bricks, widely used in zinc smelting furnace, volatile kiln, chrome corundum brick Has excellent thermal stability and high temperature creep performance, at the same time in line with the requirements of national recycling economy.

 

Steel-Groove-Brick

 

Technical Parameters:

Item

High chromium oxide brick

Medium chrome oxide 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 start temperature ℃

≥1680

≥1670

≥1700

≥1700

≥1700

(0.2MPa,0.6%)

Reheating linear change %

±0.2

±0.2

±0.2

±0.2

±0.2

 

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