Perlite P321 Through Grade
Applications
- Pipe and duct insulations
- Fireplace slabbing
- Lightweight concrete roof and floor screeds
- Shapes and castables
- Refractory applications
- Fireproof applications
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 P321 is white with a nominal particle size of 0.15 - 6.0 mm
| Refractive Index | 1.5 |
| Free Moisture (max) | 0.5% |
| pH of Water Slurry | 6.5 - 8.0 |
| Softening Point | 890 - 1100oC |
| Fushion Point | 1280 - 1350oC |
| Specific Heat | 837J/kgK (0.2 cal/gc) |
| Thermal Condcuctivity (loose poured) | 0.05 w/mC |
Grading Specification
The bulk density of Perlite P321 is 90 - 120 kg/m3.
| Sieve Size | % by weight passing |
| 4.75 | 90 - 100 |
| 2.40 | 50 - 80 |
| 1.20 | 10 - 30 |
| 600 micron | 10 - 30 |
| 300 micron | 0 - 5 |
Note: Nominal particle size indicates the 80% band i.e. up to 10% above of below the specified range