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Calcium aluminate high alumina refractory cement 80%

  • CA80
  • KAIYUAN
  • 38160
Quantity:

Product Description

CA75/CA80 Refractory cement

Brand

CA75

CA75S

CA80

CA80S

Setting time

short

long

short

long

As per GB201-2000   standard

SiO2

≤0.5

≤0.5

≤0.5

≤0.5

Al2O3

73.5-75.5

73.5-75.5

78.0-81.0

78.0-81.0

Fe2O3

≤0.2

≤0.2

≤0.2

≤0.2

CaO

23.0-25.0

23.0-25.0

17.5-20.5

17.5-20.5

MgO

≤0.4

≤0.4

≤0.4

≤0.4

R2O

≤0.4

≤0.4

≤0.4

≤0.4

 Fineness

d50μm

6-9

6-9

5-8

5-8

-45μm%

≤5.0

≤5.0

≤5.0

≤5.0

Initial   setting time minutes

30-90

90-150

30-90

90-150

Finial   setting time minutes

90-180

270-360

90-180

270-360

MOR 1 day

10.5-12.0

10.5-12.0

5.0-7.5

5.0-7.5

MOR 3 days

11.0-12.5

11.0-12.5

6.0-8.5

6.0-8.5

CCS 1 day

50-60

60-70

30-40

30-40

CCS 3 days

55-65

65-75

40-50

40-50

Castable   properties

Setting Timeminnutes

20

50-80

180-270

90-120

180-270

35

30-50

60-90

40-60

60-90

Vibration   Flowmm)(20

Initial   vibration flow

260-270

270-280

255-265

265-275

10 minutes

245-255

260-270

250-260

260-270

30 minutes

235-245

240-250

240-250

245-255

60 minutes

225-235

235-245

235-245

240-250

Flexural   StrengthMPa

20×24hrs

4.5-5.5

4.5-5.5

3.0-4.0

3.0-4.0

110×24hrs

10.0-11.5

10.0-11.5

8.0-9.0

8.0-9.0

1100×4hrs

12.0-14.0

12.0-14.0

11.0-13.0

11.0-13.0

 Compressive   StrengthMPa

20×24hrs

30-40

30-40

25-35

25-35

110×24hrs

75-85

75-85

60-70

60-70

1100×4hrs

100-120

100-120

100-120

100-120

 Linear   Change%

1100×4hrs

≤-0.20

≤-0.20

≤-0.15

≤-0.15

·        Pure calcium aluminate cement CA75 series products are customized products that meet the requirements of specific formulation design, and their performance is between the CA70 series and CA80 series products. CA75 sets and hardens faster, while CA75S has better fluidity and longer construction time.   

·       Pure calcium aluminate cement CA80 is a high-purity product, with an alumina content more than 78%, good early strength, and high residual strength at medium temperature. It is suitable for the preparation of various traditional and low cement castable. The prepared castable have a high softening temperature under load, excellent slag resistance and mechanical impact resistance, and the use temperature can reach 1800°C. The product contains extremely low impurities such as iron and silicon, and has good resistance to corrosion by reducing media such as CO, H2, and CH4. 

·        Pure calcium aluminate cement CA80S has better fluidity, longer construction time and lower water demand. The user does not need to add any setting agent to make the prepared castable have ideal construction performance and excellent mechanical strength. It is especially suitable for high temperature environmental conditions in summer and other occasions with special requirements for the working time of the castable.


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