Grades

CA-70

CA-80

Composition(%)

Al2O3

68.5-71

≥77

CaO

26.5-30.5

17.0-20.0

SiO2

≤0.5

≤0.5

Fe2O3

≤0.5

≤0.5

Specific surface area(cm2/g)

≥5000

≥6000

Setting time

Initial(min)

≥60

≥60

Final(h)

≤6

≤6

24h curing strength(MPa)

Bending

≥5.0

≥4.0

Compressive

≥40

≥30