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Perlite P3LW Cryogenic

Applications

Chemical Properties

Perlite P3 is an aluminium silicate. Typical composition is:

CompoundPercentage
Silicon73%
Aluminium15%
Iron (Fe2O3)2%
Sodium (Na2O)3%
Potassium (K2O)5%
Calcium (CaO) + Magnesium (MgO)1%
Others1%
Organic Matternil
Moisture Content (when packed)< 0.8%

Physical Properties

Expanded Perlite P3 is white with a nominal particle size of 0.075 - 1.20 microns.

Refractive Index1.5
Free Moisture (max) 0.5%
pH of Water Slurry 6.5 - 7.5
Softening Point890 - 1100oC
Fushion Point 1280 - 1350oC
Specific Heat 837 J kg-1 K-1
Thermal Condcuctivity (loose poured) 0.05 W m-1 K-1
Bulk Density (Loose Poured) 35 - 55 kgm-m

Grading Specification

The bulk density of Perlite P3 is 35-55 kg/m3 (LW) and 80-90 kg/m3 (HD)

Sieve Size (mm)% by weight passing
1.180 90 - 100
0.600 70 - 90
0.300 35 - 55
0.150 10 - 30
0.075 0 - 10

Note: Nominal particle size indicates the 80% band i.e. up to 10% above of below the specified range