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types of refractory fire clay bricks (SK32,34,36,38)
types of refractory fire clay bricks (SK32,34,36,38)

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1.type: SK32,34,36,38
2.refractoriness: >1710C

Item

SK-32

SK-34

SK-36

SK-38

Al2O3 (%)

35

38

55

70

Fe2O3 (%)

3.00

2.50

2.00

2.00

Refractoriness(SK)

32

34

36

38

Refractoriness

1710

1730

1760

--

Refractoriness under load0.2MPa

1300

1350

1450

1520

Porosity (%)

22-26

20-24

20-23

20-22

Bulk density (g/cm3)

2.05

2.10-2.2

2.25-2.35

2.40-2.50

Cold crushing strength (MPa)

22

25

45

50

Thermal expansion at 1000°C (%)

0.6

0.6

0.3

0.2

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