Quick drying-out castable

     Quick drying-out castables are developed for shortening time for curing and drying and improving drying-out security. Natural curing time can be saved by over half of that needed for common castables. The required drying-out time, depending on the thickness of the installed lining and material quality, can be shortened by 2 to 4 days comparing with conventional low cement and ultra-low cement castables, thus the preheating time can be greatly saved. They are especially suitable for urgent repairs.

Product specification

Properties specification of quick drying-out castables for heating furnace

 

 Type

 

SR-WK-1

 

SR-WK-2

 

SR-WK-3

 

SR-WK-4

Chemical analysis (%) ≥ 

Al2O3

45

50

60

65

 

Bulk density (g/cm3)   ≥

110℃×24h

2.20

2.25

2.35

2.40

1350℃×3h

2.10

2.15

2.25

2.30

 

Modulus of rupture Mpa ≥

110℃×24h

3

3

3

4

1350℃×3h

5

5

6

6

 

Compressive strength  ≥

110℃×24h

20

25

25

30

1350℃×3h

40

40

50

50

Permanent change (%)

1350℃×3h

±0.5

±0.5

±0.5

±1.5

Service temperature (℃)

1350

1400

1450

1500

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