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Chrome Corundum Castable

Chrome corundum castable is also known as red corundum, its main component is -alumina.Chromium corundum is made of alumina powder as the main raw material, chromium oxide, etc., and is smelted at high temperature. It is pink, its hardness is similar to that of white corundum, and its toughness is higher than that of white corundum. Advantages Slag resistance is the main performance of chrome corundum castables. During production, manufacturers need to adjust the water reducing agent and retarder according to the different conditions of users and different time. When adding chromium oxide, the

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Chrome Corundum Castable Details

Chrome corundum castable

is also known as red corundum, its main component is α-alumina.Chromium corundum is made of alumina powder as the main raw material, chromium oxide, etc., and is smelted at high temperature. It is pink, its hardness is similar to that of white corundum, and its toughness is higher than that of white corundum.

Advantages

Slag resistance is the main performance of chrome corundum castables. During production, manufacturers need to adjust the water reducing agent and retarder according to the different conditions of users and different time.

When adding chromium oxide, the particle size of the refractory powder should be adjusted, and different particle size classifications will affect the performance of the chromium corundum castable. Increasing the amount of Cr2O3 can improve the slag resistance of the castable, especially the slag penetration resistance.

Applications

Chrome corundum castables are mainly used for lining of carbon black reaction furnaces and coal-water slurry gasifiers, and the operating temperature is generally above 1700 degrees. Also used in high temperature areas of melting furnaces with an oxidizing atmosphere, such as the slag part of gasification melting furnaces.

Physical And Chemical Indicators

Project		Chrome corundum castables
chemical composition（%）	Al₂O₃	≥80
	Cr₂O₃	≥5
	ZrO₂	-
	Fe₂O₃	≤0.8
Bulk density（g/cm³）	≥3.0	≥2.8
Cold compressive strength（Mpa）	110℃*24h	≥100
Cold compressive strength（Mpa）	1100℃*3h	≥120
Bending resistance（Mpa）	110℃*24h	≥13
Bending resistance（Mpa）	1100℃*3h	≥14
Change rate of burning line（%）	1100℃*3h	±0.3

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