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 (k·m2·h·℃) | 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.
