KAOWOOL Fibre Blanket is a flexible, insulating refractory material processed from high purity Bulk Fibre. These low "shot" content (un-fiberised particles), thermally efficient insulation materials are excellent for use in a variety of applications. Features of KAOWOOL Blanket include low heat storage, excellent resistance to thermal shock and very low thennal conductivity. It contains no organic binder, thus will not emit any offensive odours or contaminate furnace atmospheres.

The strength of Kaowool Blanket is enhanced by the thorough needling of the product, which interlocks fibres in the thickness direction. This reduces the possibility of delamination and increases handling and finished strength without any loss of flexibility. KAOWOOL Blanket also will not lose strength in service.

With the addition of zirconia into the aluminosilicate mix, resistance to high temperature devitrification and shrinkage in improved, without impairing the excellent thermal conductivity or other characteristics.

TYPICAL PHYSICAL PROPERTIES

	Standard Fibre	Zirconia Fibre
Maximum Use Limit	1260	1400
Melting Point	1760	1825
Tensile Strength	1.4x103	1.4x103
Packing Density (kg/M3)	50-250	50-250
Fibre Diameter (um avg.)	2.8	2.0-3.0
Fibre Length (mm avg.)	100	75

TYPICAL CHEMICAL ANALYSIS

	Standard Fibre	Zirconia Fibre
A1203	45-48	32-36
SiO2	51-54	45-48
ZrO2	---	14.5-20.5

CHEMICAL PROPERTIES

Kaowool Refractory Fibre and Zirconia Fibre in particular have excellent resistance to chemical attack, being resistant to most acids (except hydrofluoric and phosphoric) and many alkalies. They are unaffected by oil, water or steam. The product can however, absorb water without chemical attachment. Thermal and physical properties are restored upon drying.

Standard Fibre should not be subjected to reducing atmospheres at high temperature.

MATERIAL PACKAGING

Kaowool Ceramic Fibre Blanket is available in densities of 64, 96, 128 and 160 kg/M3 and in a range of thicknesses from 9 to 5Omm. Rolls are 61Omm wide by 7.6m (or 3.8m depending on thickness) long.

CONTINUOUS SERVICE RATING

The upper temperature use limit for ceramic fibre can vary somewhat. It is dependent upon the circumstances and requirements of specific applications and practical experience is likely to provide the final recommendation. The figures quoted as continuous service ratir, s are given as a guide, and represent in general terms the maximum temperatures for continuous use consistent with reasonable changes in properties such as shrinkage and resiliency. Where high temperature stability is required over long periods, or where the environmental conditions are severe, it is advisable to impose a lower service limit.

TYPICAL APPLICATIONS

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Combustion & Chemical Engineering.
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