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| Cryogenic insulation from Knauf Perlite - In a class of its own. |
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For safe and economical cryogenic insulation, the use of Superlite® is indispensable. As insulation for oxygen and nitrogen plants (up to a height of 50 metres) as well as in heat exchangers, the material provides unbeatable advantages over competing products. For new fill and re-filling of systems, even complicated geometries can be filled quickly and without problems. Insulations with Superlite® have proven themselves for decades in the deep freeze industry. Knauf Perlite provides not only an outstanding insulating material, but also undertakes the disposal from, and re-supply of, customer systems in the event of repair, extension and renovation. There is an unlimited 24 hour on-site service.
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| Summary of Superlite®EL |
- Very good and constant insulating effect
- Extremely long-term stability from silicate (natural glass)
- Non-flammable
- Chemically inert and pH-neutral
- Thermally stable from –250 to 800 degrees Celsius
- Rapid filling ability
- Mobile production on site possible
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| Specifications |
Bulk density (depending on granule size) |
35-55 kg/m3 |
Granule size |
0 - 1,5 mm |
Thermal conductivity values at bulk density 48 g/l
-150 °C
-100 °C
-50 °C
-0 °C |
0,0209 ± 0,0023 W/mK
0,0279 ± 0,0023 W/mK
0,0343 ± 0,0023 W/mK
0,0413 ± 0,0023 W/mK |
Additional requirement when filling by hand |
5 - 10% |
Additional requirement when pneumatic filling |
10 - 20% |
Angle of pour |
35 - 40° |
Compressive strength at 20 % deformation |
0,02 N/mm2 |
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24 hour service
In applications such as repair, extension and renovation work, time is the most important factor.
Rapid suction extraction and blowing back of the perlite products can keep required downtimes as low as possible.
Suction extraction is performed using vacuum silo vehicles. Knauf Perlite has three of these special
vehicles with an average extraction performance of 25 cubic metres per hour. Should leakage in an air
separation unit require suction extraction of the Superlite® to access the damaged area, or if complete
emptying is required, this can be organised within a few hours.
For subsequent filling of the emptied plant, silo hoses of nominal diameter 150 mm are laid to the top of
the air separation plant and lowered into the vessels.
Filter bags are used on the exhaust to prevent perlite escaping into the conveying air.
After successful installation, perlite is blown into the air separation plant at a maximum of 0.4
bar from silo vehicles or mobile expansion plant.
Mobile plant technology – close to the customer.
In Germany and neighbouring countries, Knauf Perlite uses mobile production plant.
This often has cost benefits for the customer and can result in considerable savings in transport costs.
Disposal – simply without a second thought
Perlite is a pure, natural material so presents no problem for disposal.
The material has high chemical stability (virtually chemically inert) and
for practical purposes creates no contamination. It may be deposited without concern at
landfill sites. In most cases, perlite is flushed into an open clay pit with other minerals
and used for recultivation. The uncontaminated material is also suitable for re-use in agriculture
and gardening. |
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Industry 
