Thermal insulation refractory product
 
Clay insulating brick
High-alumina insulating brick
Silica insulating brick
Aluminosilicate refractory fibre
 
 
 
 
Refractory fibre
Refractory fibre
 
Thermal insulation refractory product
    
    Thermal insulation refractory product is used as heat insulation layer. And it is also used as kiln lining that is resistant to high temperature melt materials and corrosive gases.
    
Clay insulating brick
Performance index
Item

Index

NG-1.5

NG-1.3a

NG-1.3b

NG-1.0

NG-0.9

NG-0.8

NG-0.7

NG-0.6

NG-0.5

NG-0.4

Bulk density£¬g/cm3
No more than

1.5

1.3

1.3

1.0

0.9

0.8

0.7

0.6

0.5

0.4

Cold crushing strength£¬kgf/cm2
No less than

60

45

40

30

25

25

20

15

12

10

Reheating linear change
No more than 2%(Testing temperature¡æ)

1400

1400

1350

1350

1300

1250

1250

1200

1150

1150

Thermal conductivity coefficient **W/£¨m.k£©average temperature 350¡À25¡æ
No more than

0.70

0.60

0.60

0.50

0.40

0.35

0.35

0.25

0.25

0.20

 
High-alumina insulating brick
Performance index
Item

Index

LG-1.0

LG-0.9

LG-0.8

LG-0.7

LG-0.6

LG-0.5

LG-0.4

Al2O3£¬% No less than

48

48

48

48

48

48

48

Fe2O3

2.0

2.0

2.0

2.0

2.0

2.0

2.0

Bulk density£¬g/cm3 No more than

1.0

0.9

0.8

0.7

0.6

0.5

0.4

Cold crushing strength£¬kgf/cm2
No less than

40

35

30

25

20

15

8

Reheating linear change
No more than 2%(Testing temperature¡æ)

1400

1400

1400

1350

1350

1250

1250

Thermal conductivity coefficient£¬W/£¨m.k£©£¨average temperature 350¡À25¡æ£©
No more than

0.50

0.45

0.35

0.35

0.30

0.25

0.25

 
Silica insulating brick
Performance index
Item

Index

GGR-1.00

GGR-1.10

GGR-1.15

GGR-1.20

SiO2£¬% No less than

91

91

91

91

Bulk density£¬g/cm3 No more than

1.00

1.10

1.15

1.20

Cold crushing strength£¬MPa
No less than

2.0

3.0

5.0

5.0

Reheating linear change£¬% No more than

1550¡æ£¬2h

-

-

0.5

0.5

1450¡æ, 2h

0.5

0.5

-

-

Thermal conductivity coefficient£¬W/£¨m.k£©£¨average temperature 350¡À25¡æ£© No more than

0.55

0.60

0.65

0.70

0.1MPa Refractoriness under load£¬¡æ No less than

1400

1420

1500

1520

Aluminosilicate refractory fibre
Chemical component

Component

Content

Al2O3+SiO2

No less than

96

Al2O3

No less than

45

Fe2O3

No more than

1.2

K2O+Na2O

No more than

0.5

Physical property

Item

Index

Capacity £¬kg/m3

130

¡À1.5

160

190

220

Slag ball content£¬%£¨£¾0.25mm£©

No more than

5

Heating linear contractive£¬%1150¡æ£¬Heat insulation for 6 hours

No more than

4

Water content£¬%

No more than

0.5

 
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