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JM Special Insulating Refractory Brick

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JM-special-Insulating-Refractory-Brick



brand No. / Items


KY-JM23

KY-JM26

KY-JM28-1

KY-JM28-2

KY-JM30

 ℃

Service temperature

1260

1430

1540

1540

1650

(B.D.)g/cm3         ≤

Bulk density

0.5

0.8

0.9

0.95

1.05

Mpa              ≥

MOR

0.7

1.1

1.5

1.6

2.0

Mpa              ≥

CCS

1.0

2.0

2.2

2.3

2.7

PLC

%

0.3

0.4

0.5

0.5

-

℃×8h

1230

1400

1510

1510

1090℃%≤

Reversible coefficient of thermal expansion

0.6

0.7

0.8

0.8

0.9

w/m.k≤

Thermal conductivity

400℃

0.15

0.28

0.32

0.33

-

600℃

0.17

0.31

0.34

0.36

-

800℃

0.19

0.33

0.36

0.39

-

1000℃

0.24

0.35

0.39

0.42

-

Al2O3%               ≥

37

50

60

60

68

Fe2O3%              ≤

1.0

1.0

0.8

0.8

0.7

SiO2 %                       ≤

45

43

36

36

29


Characteristics of this series product are as follow : low iron content and low temperature smelt of alkali metal,

Good refractoriness and good affection of reducing atmosphere resistance. The product is featured with even structure, light weight, high CCS and good insulation resistance, so the furnace body has less heat storage during cooling and energy can be saved effectively. At high temperature, the product is characterized by high strength, stable volume and good thermal shock resistance. After product being sintered, it will be ground resulting in small size tolerance and can meet the requirements of construction.


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