Burntstone
CERAMIC LIMITED
Technical Data
December 2000
1600 grade fibre blanket
based on Alumina or Mullite fibre
Description
1600 grade alumina blankets are available in high purity alumina or mullite fibre types. The alumina type is the original polycrystalline (non-vitreous) fibre, the mullite type is a later development which shows less contraction at high temperature. They are available in plain or quilted form. The quilted type has ceramic yarn stitching which holds the blanket together when it has been cut into pieces. A sharp knife or scissors are suitable cutting implements.
These lightweight blankets have good handling strength and low thermal conductivity. They are ideal for furnace insulation up to 1600°C and for providing temporary thermal insulation in a variety of situations. They contain no binders and generally do not produce smoke or fume. Occasionally some lubricant is added to aid blanket formation. This may give rise to an odour briefly on first heating.
Properties
| Chemical analysis | Alumina blanket | | Mullite blanket |
|---|
| Al2O3 | | 95% | | 80% |
| SiO2 | | 5% | | 20% |
| Maximum service temperature | | |
| Continuous service | | 1600°C | | 1600°C |
| Short term service | | 1650°C | | 1650°C |
Thermal conductivity (Both qualities)
| Density (kg/m3) | | 96 |
| Temp °C | Conductivity W/mK |
| 315 | | 0.07 |
| 540 | | 0.09 |
| 760 | | 0.13 |
| 1200 | | 0.23 |
| 1420 | | 0.30 |
Applications
| |
|---|
| – Thermal insulation | Duct insulation |
| – Heat shields | Seals |
| – Casting trough covers |
| – Ladle covers |
| These blankets comprise fibres which are not classified as RCF carcinogens.
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Availability
– Rolls 610mm wide x 25mm thick
– in lengths of 7.2m
The information and data herein are offered solely for your consideration and guidance and are not to be construed as a warranty or specification. Nothing contained herein is to be interpreted as authorisation to practice a patented invention without a licence.
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BURNTSTONE CERAMIC LIMITED 19 Redgates, Walkington, Beverley HU17 8TS
Tel: +44 (0) 1482 868706
E-mail: sales@burntstone.co.uk Home page: http://www.burntstone.co.uk
Registered in England 2113851 |
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| Website Version 4.6 - Last revision date: 12 March 2008
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