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special fireclay brick

product details

 special fireclay brick

it has high bulk density, low porosity and low creep under load at high temperature, it can be used as lining materials in anode bake furnace.
v--application: for the lining of bake oven, used as flue wall bricks, head wall bricks, wedge bricks and slabs. 

item

unit

cm-lr-s

cm-lr-1

cm-lr-2

test method

ai2o3

%

42

42

40

gb 6900

fe2o3

%

1.0

1.8

2.0

gb 6900

k2o na2o

%

0.6

0.8

1.2

gb 6900

cao mgo

%

0.6

0.7

1.0

gb 6900

apparent porosity

%

16

19

19

gb/t2997-2000

(iso5017-1988)

bulk density

g/cm3

2.35

2.2

2.2

gb/t2997-2000

(iso5017-1988)

cold crushing strength

mpa

40

40

30

gb/t5072-2008

(iso10059-1-1992)

folding strength at 12000c*0.5hours

mpa

10

10

-

gb/t3002-2004

(iso5013-1985)

folding strength at 13500c*0.5hours

mpa

6

4

-

gb/t3002-2004

(iso5013-1985)

refractoriness under load 2kg5/cm3

0c

1450

1450

1410

gb/t5989-1998

(iso1893-2005)

creep at 12800c from 0 to 25hrs  under load of 0.2mpa,

%

0.4

0.4

0.5

gb/5073-2005

(iso3187-1989)

reheating linear change

%

0.1~0.2

(14500c,2h)

0.1~0.2

(14500c,2h)

0.1~0.2

(14000c,2h)

(iso2478-1987)

thermal expansion between 20c 0-10000c

%

0.7

0.7

0.7

gb/t7320-2008

(en993-19:2004)

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