Perlite P6 Extra Fine
Applications
- Cryogenic low temperature insulation
- Lightwight filler and extender
Chemical Properties
Compound | Percentage |
---|---|
Silicon | 73% |
Aluminium | 15% |
Iron (Fe2O3) | 2% |
Sodium (Na2O) | 3% |
Potassium (K2O) | 5% |
Calcium (CaO) + Magnesium (MgO) | 1% |
Others | 1% |
pH | 6.5 - 7.5 |
Organic Matter | nil |
Moisture Content (when packed) | nil |
Physical Properties
Expanded Perlite P6 is white with a nominal particle size of 0.075 - 1.70 microns.
Refractive Index | 0.5 |
Free Moisture (max) | 0.5% |
pH of Water Slurry | 6.5 - 7.5 |
Softening Point | 890 - 1100oC |
Fushion Point | 1280 - 1350oC |
Specific Heat | 837J/kgK (0.2 cal/gc) |
Thermal Condcuctivity (loose poured) | 0.028 - 0.032 w/mC |
Thermal Conductivity (compacted) | 0.030 - 0.035 w/mC |
Grading Specification
The bulk density of Perlite P6 is 40-50 kg/m3 .
Sieve Size | % by weight passing |
1.18 | 90 - 100 |
600 micron | 70 - 90 |
300 micron | 35 - 55 |
150 micron | 10 - 30 |
75 micron | 0 - 10 |
Note: Nominal particle size indicates the 80% band i.e. up to 10% above of below the specified range