Coating Materials for Ceramic Fiber NEOKOTE series

Coating Materials for Ceramic Fiber NEOKOTE series

Introduction Surface coating for fiber protection plays an important role in block lining of high temperature furnaces. Suitable materials are selected by talking operating conditions into consideration. The purposes of this coating on the...

  • Introduction

Surface coating for fiber protection plays an important role in block lining of high temperature furnaces. Suitable materials are selected by talking operating conditions into consideration. The purposes of this coating on the ceramic fiber surface are as follows:

  • To reduce shrinkage of ceramic fiber during high temperature heating. Surface coating not only increases ceramic fiber surface strength but controls distortion (change of volume) caused by initial shrinkage of ceramic fiber occurring at around 800-1000°
  • To increase resistance of ceramic fiber to permeation of combustion gases and gases in the furnace, and resistance to corrosion and scale attack.
  • To increase resistance of ceramic fiber to gas velocity and abrasion.

 

  • Quality, Quantity Required, Packaging

Properties

NEOKOTE

L

NEOKOTE

M

SNOKOTE

S

NEOKOTE

K

NEOKOTE

MI

NEOKOTE

SP

NEOKOTE

SPG

Max. Service Temperature (°C)

1000

1400

1450

1450

1400

1500

1500

Type

Dry

Dry

Dry

Dry

Wet

Wet

Wet

Installation Method

Spraying and Trowelling

trowelling

Gunning

Bulk Density at powder (kg/m3)

750

1100

1040

870

-

-

-

Water used in mixing for spray (%)

60~65

40~45

40~45

45~50

-

-

-

 

 

 

 

 

 

Linear Shrinkage (%)

after firing at 800°C

0.7

-

-

-

-

-

-

after firing at 1000°C

1.2

-

-

-

-

-

-

after firing at 1300°C

-

1.0

0.5

-

0.2

-

-

after firing at 1400°C

-

1.0

-

-

0.4

-

-

after firing at 1450°C

-

-

0.8

0.7

-

-

-

after firing at 1500°C

-

-

-

-

-

-1.0

-1.0

Chemical Composition (%)

Al2O3

40

66

79

80

79

70

70

SiO2

52

22

20

3

20

29

29

Others

R2O 1.2

SiC 8.0

-

MgO 15

-

-

-

Quantity Required (kg/m2)

v Installation thickness: 1~2mm

2~3

3~4

3~4

3~4

5~6

-

-

Quantity per Bag or Can (kg)

20

20

20

20

20

20

1

Packaging

Paper Bag

Can

Film-pack

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