High Alumina Refractory Cement is manufactured from Calcined Alumina and high purity lime. It is used as a binder for all types of castable refractories.

Typical Chemical Analysis:
Percentage of Total in Weight ORCEM 75 Al203 % Min. 73.0% Fe203 % Max. 0.3%
Ca0 % 25.0%
ree Lime % 0.2%

Typical Physical Properties:
Cold Crushing Strength kg/cm2 (Curing) 300 Min.
Cold Crushing Strength at 110oC/ 24 hrs 500 Min.
Sp. Surface (cm2 /gm) 4500 Min.
Setting Time (minutes)
- Initial (Minimum) 30
- Final (Maximum) 400