Ceramic Fibre Products
Ceramic fibre is an asbestos free blown or spun alumino-silicate
fibre made from blends of high purity alumina, and silica. A unique
combination of physical and refractory properties makes this an
outstanding material for use in high temperature applications. The basic
fibre, which is white and non-crystalline, can be converted into a wide
range of product forms to suit many different applications throughout
the broad spectrum of industry particularly where hot processes are
involved.
Classification Temperature
Standard/Cerafiber |
- 1260°C |
Zirconia/Cerachem fiber |
- 1425°C |
CERAMIC FIBER |
Ceragrade |
Cerachem grade |
Classification temp. |
1260°C |
1425°C |
Continous Maximum * operating temp. |
1175°C |
1325°C |
Fibre Diameter (Arithmetic mean) |
3 - 4 microns |
3 - 4 microns |
Specific Heat Capacity KJ/KgK at
1090°C |
1.13 |
1.13 |
Tensile Strenght (Kpa) (for 128 Kg/m
Blanket) |
60 min. |
60 min. |
Linear shrinkage ( % after 24 hrs
firing) |
3% max at 1200°C |
3.5% max at 1200°C |
Leachable Chloride content |
< 10 ppm |
< 10 ppm |
CERAMIC FIBER
|
Standard fibre
|
Zirconia fibre
|
Classification temp. |
1260°C |
1260°C |
Continous Maximum * operating temp. |
1175°C |
1325°C |
Fibre Diameter (Arithmetic mean) |
1.5 - 3.0 microns |
1.5 - 3.0 microns |
Specific Heat Capacity KJ/KgK at
1090°C |
1.07 |
1.07 |
Tensile Strenght (Kpa) (for 128 Kg/m
Blanket) |
30 - 60 |
30 - 60 |
Linear shrinkage ( % after 24 hrs
firing) |
less than 3.2 at 1200°C |
less than 3.5 at 1200°C |
Leachable Chloride content |
< 10 ppm |
< 10 ppm |
Key Properties
Key Properties of all Cerafiber, Cerablankets and
Ceramic Fibre products are
- Very low thermal conductivity - about one
third that of insulating refractory bricks, meaning thin but
effective insulation.
|
- Extremely low heat storage due to low
density. In furnace applications this means faster heat up and
cool down times, hence higher productivity and fuel savings.
|
- Light weight - one sixth the weight of
insulating bricks. Fumace steel structure is hence much lighter,
and costs less.
|
- Easy to install and maintain, saves time.
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- Resistant to thermal shock. No matter how
fast they are heated or cooled, the product forms
will not crack or spall.
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Good acoustic properties enable
Ceramic Fibre Products to be used for noise reduction in high
temperature enviorments. An attendant benefit is vibration reduction.
Ceramic Fibre is chemically pure,
and has very low chloride content. Special handling techniques can be
employed to further limit leachable chloride levels to less than 10
ppm, for use in contact with stainless steel in special applications.
Ceramic Fibre are compietely
inorganic and binder free. Bulk fiber, blanket and moist felt, are
therefore incombustable. Vacuum formed products contain a small
quantity of temporary inorganic binder which burns off in service.
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