Fireclay Brick

Fireclay Brick

Short Description:

Fireclay bricks are alumina silicate bricks with the refractoriness of SK 32-34 and contain 35- 45% alumina.It made of fire clay, calcined chamotte,mullite etc.The bricks have low porosity,high strength, good resistance to thermal spalling and to abrasion and to creep.


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Description

Fireclay bricks are alumina silicate bricks with the refractoriness of SK 32-34 and contain 35- 45% alumina.It made of fire clay, calcined chamotte,mullite etc.The bricks have low porosity,high strength, good resistance to thermal spalling and to abrasion and to creep.Fireclay bricks, also known as sintered bricks, are one of the oldest building materials in the world.

Features

Good high temperature fire resistance under load / Low thermal expansion at high temperatures / Lower impurity content

Good thermal shock resistance / Excellent slag and abrasion resistance / Good cold press strength

Application

Fireclay bricks are widely used in the lining of coke oven, glass kiln, cement rotary kiln, lime kiln, all kinds of incinerator, heating furnace, etc.

Physical And Chemical Indicators

Description

DN-17

DN14

DN12

SK34

SK33

SK32

Refractoriness (SK)

34

34

34

34

33

32

Bulk density (g/cm3)

2.25

2.34

2.40

2.20

2.17

2.15

Cold Crushing Strength (MPa)

50

65

70

40

35

30

Apparent Porosity(%)

17

14

12

23

24

26

Permanent linear change @1400ºC*2hrs(%)

±0.1~-0.2

±0.1~-0.2

±0.1~-0.2

±0.3

±0.5

±0.5

Thermal Linear expansion @1000ºC

0.6

0.6

0.5

0.6

0.6

0.6

Refractoriness under Load (ºC)@0.2MPa

1430

1470

1500

1350

1300

1250

Chemical Analysis (%) Al2O3

42

45

46

42

38

35

Fe2O3

1.7

1.5

1.3

2.0

2.2

3.0


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  • Fireclay bricks are divided into ordinary fireclay bricks, low creep fireclay bricks, low porosity fireclay bricks and large fireclay bottom bricks for glass kiln 

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