Vermiculite is a member of the phyllosilicate group of minerals, resembling mica in appearance. It is found in various parts of the world, vermiculite is basically a hydrated phlogopite mica which has the remarkable ability to expand to many times than its original volume when heated at 850 C.Vermiculite is most widely used in its exfoliated form. The concertina-shaped granules of exfoliated vermiculite are non-combustible as well as being insoluble in water and all organic solvents.
Chemical components
| Chemical Composition | SiO2 | Al2O3 | MgO | CaO | PH | Fe2O3 | Impurity |
| (%) | 41 | 18 | 21 | 0.8 | 7-10 | 3.5 | < 3 |
Size: 0.3-1mm/1-2mm/2-4mm or other sizes customers required. Expanded Vermiculite
| Size | Density (Kg/M3) | Water Absorption(%) | Thermal Conductivity (km2h) | Impurity(%) |
| 8mm Above | 70-110 | 480 | 0.045 | 3 |
| 4-8mm | 70-110 | 480 | 0.045 | 3 |
| 3-5mm | 80-120 | 465 | 0.045 | 3 |
| 1-3mm | 80-150 | 430 | 0.045 | 3 |
| 20-40mesh | 100-160 | 410 | 0.045-0.055 | 2 |
| 40-70mesh | 100-170 | 410 | 0.045-0.055 | 2 |
| 70-100mesh | 100-170 | 400 | 0.045-0.055 | 2 |
| 150mesh | 100-18 | 400 | 0.045-0.055 | 1 |
| 200mesh | 100-180 | 400 | 0.045-0.055 | 1 |
| 325mesh | 100-180 | 400 | 0.045-0.055 | 1 |
| Blended Grade | 90-180 | 430 | 0.045-0.055 | 3 |
Size:0.3-1mm/1-2mm/1.5-3.5mm/2-4mm/3.5-7mm/4-8mm/20-40mesh/70-100mesh/325mesh or as per customers'request 1. Color: Silver, Golden Horticulture Vermiculite: 1-2mm, 2-4mm Expanded Vermiculite: 0-1mm, 1-3mm, 2-4mm
Insulation Vermiculite: 0-1mm, 0-2mm, 0-3mm The size should be adjusted according to the client's demand.
