Complaint
Crude vermiculite consists of golden and silver vermiculite which are carefully classified into many sizes ,includes0.3-1mm1.5-2.5mm0.5-1.41mm1-2mm2-4mm3-6mm4-8mm.
Exfoliated Vermiculite
The exfoliation process is carried out commercially by passing crude vermiculite through a furnace chamber in a controlled manner. The crude vermiculite then expands at right angles to the cleavage planes, producing concertina-shaped particles many times their original volume.Exfoliated vermiculite size ,includes 0.3-1mm1-3mm1-2mm2-4mm2-3mm
3-5mm3-6mm4-8mm6-8mm,special size can be done as per customer's demands .
Expanded vermiculite Chemical Properties
Composition | SiO2 | MgO | Al2O3 | Fe2O3 | CaO | K2O | ph |
Percentage | 37-42% | 11-23% | 9-17% | 3.5-18% | 1-2% | 5-8% | 7-11 |
| TYPICAL PHYSICAL PROPERTIES | |
| Free Moisture, Maximum | 0.5% |
| pH (of water slurry) | 7.0-9.5 |
| Specific Gravity | 2.5 |
| Expanded Bulk Density (normal) | 4-10 lb/ft3 |
| Mesh Sizes (normal) | 2-4mm |
| Fusion Point | 2200-2400F |
| Specific Heat | 1.08 kJ/kg.K |
| Thermal Conductivity | .27-.41 BTU.in/h.ft2.F |
