Plastics

      SR-KS series plastics are developed, using high quality fireclay, bauxite and kyanite group minerals as raw materials, and using chemical and ceramic bondings. Successive mild expansion during heating is their distinctive feature, besides having good work ability, high refractiveness, superior thermal shock and spalling resistance to those of castables. They are suitable for the lining of large-sized heating furnace to give service lives as long as over 10 years.

Product specification

    

Properties specification of plastics for heating furnace

 

 Type

 

SR-KS-1

 

SR-KS-2

 

SR-KS-3

 

SR-KS-4

 

SR-KS-5

Chemical analysis (%) ≥

 

Al2O3

 

40

 

45

 

55

 

65

 

75

Bulk density (g/cm3)   ≥

 

110℃×24h

 

2.15

 

2.20

 

2.25

 

2.40

 

2.50

Compressive strength Mpa ≥

110℃×24h

2.0

2.0

3.0

3.0

4.0

1350℃×3h

3.0

3.0

4.0

4.0

5.0

Permanent change (%)

110℃×24h

-1.00

-1.00

-1.00

-1.00

-1.00

1350℃×3h

0+1.0

0+1.0

0+1.0

0+1.0

0+1.0

Thermal conductivity W/ (m·K) ≤

800℃

0.99

1.00

1.12

1.20

1.30

1000℃

1.00

1.10

1.36

1.45

1.55

Plastics index (%)

1630

Service temperature (℃)

 

1350

 

1400

 

1500

 

1550

 

1600

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