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High Alumina Cement CA50 A600 A700 CA70 CA80

2026-04-15
Latest company news about High Alumina Cement CA50 A600 A700 CA70 CA80

High Alumina Cement (previously called bauxite cement) is a kind of grinding hydraulic cementing

materials with clinker about 50% alumina content and has calcium aluminate as the main material,

which is also called refractory cement, which can be made to low cement high alumina castable to build

or repair all kinds of furnace and kilns for thermal insulation or acid erosion resistance with high strength.

High alumina cement is mainly used in urgent project schedules, such as pressure defense, road and special

repair projects


Item

CA-50

CA-60

CA-70

CA-80

Chemical component

Al2O3 /%

50-60

60-68

68-77

≥77

SiO2 /%

≤8.0

≤5.0

≤1.0

≤0.5

Fe2O3 /%

≤2.5

≤2.0

≤0.7

0.5

R2O

(Na2O+0.658K2O) /%

≤0.4

≤0.4

≤0.4

≤0.4

Rupture strength MPa

1day

5.5

2.5

5.0

4.0

3days

6.5

5.0

6.0

5.0

28days

/

10.0

/

/

Compressive strength MPa

1day

40

20

30

25

3days

50

45

40

30

28days

/

80

/

/

Setting time Min

Initial time

≥30

≥60

≥30

≥30

Final time

≤360

≤1080

≤360

≤360


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High Alumina Cement CA50 A600 A700 CA70 CA80
2026-04-15
Latest company news about High Alumina Cement CA50 A600 A700 CA70 CA80

High Alumina Cement (previously called bauxite cement) is a kind of grinding hydraulic cementing

materials with clinker about 50% alumina content and has calcium aluminate as the main material,

which is also called refractory cement, which can be made to low cement high alumina castable to build

or repair all kinds of furnace and kilns for thermal insulation or acid erosion resistance with high strength.

High alumina cement is mainly used in urgent project schedules, such as pressure defense, road and special

repair projects


Item

CA-50

CA-60

CA-70

CA-80

Chemical component

Al2O3 /%

50-60

60-68

68-77

≥77

SiO2 /%

≤8.0

≤5.0

≤1.0

≤0.5

Fe2O3 /%

≤2.5

≤2.0

≤0.7

0.5

R2O

(Na2O+0.658K2O) /%

≤0.4

≤0.4

≤0.4

≤0.4

Rupture strength MPa

1day

5.5

2.5

5.0

4.0

3days

6.5

5.0

6.0

5.0

28days

/

10.0

/

/

Compressive strength MPa

1day

40

20

30

25

3days

50

45

40

30

28days

/

80

/

/

Setting time Min

Initial time

≥30

≥60

≥30

≥30

Final time

≤360

≤1080

≤360

≤360


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