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Buying insulation firebrick from SINOCEAN

Date: 2010-12-21

Mullite Insulating firebricks

Mullite Insulating firebricks High-temperature mullite insulation bricks low impurity content High temperature

High-temperature mullite insulation bricks

  High-temperature mullite insulation bricks are imported new technology, using high-purity hot-mullite clinker. Depending on the temperature, add a filler made of alumina in line with burn products, high temperature firing, direct synthesis of mullite phase in energy-efficient material that can be direct contact with flame.By the relevant units of the current use of the product to achieve a variety of similar products abroad, technical indicators, advanced furnace must use new materials, new material is a high-temperature insulation refractory mullite.

Max operate temperature of test ite items

Maximum operating temperature of the test items

 

 

Designtion

JM20

JM23

JM26

JM28

JM30

JM32

1300

1350

1430

1540

1650

1760

Bulk density(g/cm3)

0.5-1.0

0.5-1.0

0.8-1.0

0.9-1.0

0.9-1.2

1.2-1.25

Cold crushing strength(Mpa)

0.9-1.2

1.2-3

3.5-4

4-4.5

4.5-5

5-5.5

Degree of room temperature flexral(Mpa)

0.7-1.0

1.0-1.3

1.5-1.8

1.9-2.0

2.0-2.1

2.1-2.2

Permanent linear change(%)

-0.98

1200*24h

-0.5

1300*24h

-0.5

1400*24h

-0.5

1500*24h

-0.5

1510*24h

-0.5

1600*24h

Load softening starting point(。C)

1100

1250

1350

1450

1500

1600

Thermal conductivity W/(m.k)350C±10C

0.12

0.15

0.25

0.32

0.38

0.47

Thermal shock resistance(time)1000。C air cooled

≥20

≥20

≥20

≥20

≥20

≥20

Chemical compostion

Al2O3(%)

≥45

≥50

≥60

≥70

≥75

≥80

Fe2O3

≤1.0

≤1.0

≤0.8

≤0.7

≤0.6

≤0.5

SiO2

55

40

35

35

18

16

CaO

1.8

1.7

1.7

1.4

1.2

1.0

SiC

-

-

-

-

-

-

ZrO

-

-

-

-

-

-

MgO

0.2

0.1

0.1

0.1

0.1

0.1