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PRODUCT
clay and high alumina plastic refractory

item 

index

clay

high alumina

CNL £­ A

CNL £­ B

CGL £­ A

CGL £­ B

CGL £­ C

refractoriness   ¡æ

1770

1770

1790

1790

1790

refractoriness under load ¡æ£¬4£¥

1490

1560

1520

1360

1250

volume concentration g/cm 3

2.25

2.20

2.30

2.4

2.60

 apparent porosity£¥

18

20

17

12

£­

compressive strength¡¡MPa

110 ¡æ

16.5

18.0

24

13

12

1400 ¡æ

30.5

56

55

29

48

folding strength¡¡MPa

110 ¡æ

4.0

4.5

4.5

3.8

3.5

1400 ¡æ

8.5

9.0

8.0

10

10

crushing strength under high temperature¡¡MPa

1000 ¡æ

30

58

72

33

42

1400 ¡æ

2.9

4.0

5.0

4.0

3.5

 linear change after burning £¥

1400 ¡æ

£­ 0.12

£« 0.80

£« 0.45

£« 0.30

£­ 0.30

expansion factor  1/k

20 ¡« 1200 ¡æ

5.1 ¡Á10 £­6

4.2 ¡Á10 £­6

5.6 ¡Á10 £­6

4.6 ¡Á10 £­6

5.5 ¡Á10 £­6

heat diffusivity W/m¡¤k

500 ¡æ

£­

0.75

0.61

0.80

0.63

thermal shock resistance  £¬(times)

1100 ¡æ£¨water-cooling£©

£­

>16

£­

>15

>15

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