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PRODUCT
light weight castable

item

index

CQJ 67

CQJ 89

CQJ 12

CQJ 16

CQJ 18

volume density      g/cm 3

0.6 0.7

0.8 0.9

1.2 1.3

1.5 1.6

1.7 1.8

chemical composition  

Al 2 O 3 >

80 95

65

Fe 2 O 3 <

0.6 0.2

CaO <

3.0 3.5

 compressive strength MPa

11024h

20 30

1.0 1.9

15 20

9 26

15 20

9003h

1.5 1.7

0.7 1.5

10 14

5 13 1300棩

5.8 1400棩

bending strength MPa

11024h

3.5

13003h

6.5

linear change after burning  

900

0.1 0.6

0.1 0.5

0.15 0.22

0.1 0.1

0.50

heat diffusivity W/mk

500

0.18

0.28 0.30

700

0.24

0.30 0.34

0.4 0.45

0.8 0.82

1000棩

refractoriness under load

4

1050 1150

0.6 1580

1630 1730

property

high strengh,linear change light after burning,thermal coefficient low,construction convenient, can be castbled,gunned,daubed or ramed.

usage 

widely used in all kinds of  industrail furnace, such as heating furnace for steel industry,insulating course for soaker,heat-treating furnace for Machine Building and the kiln equipment heat insulation liner and chimney liner of the industry of petroleum,chemical engineering,non-ferrous,building material etc.

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