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vermiculite flake
Description: Essentially vermiculite is one member of the micaceous hydrated silicate minerals, resembling mica in appearance. When heated to a temperature of about 850-950,as water flashing into steam, raw vermiculite instantly expands (exfoliates) up to 15-20 times, maximum 30 times its original bulk volume, and during expansion its color change from gold brown into silver white. It has the action of fireproof, heat insulating, sound and moisture absorbing, non-toxic, lightweight and disease free and so on.
Properties:
With the characteristic of light Weight, thermal stability and inertness, disease free and non toxic, non abrasive, highly (water, nutrients, air and so on) absorption, insulates and minimizes soil temperature fluctuation, wont deteriorate in storage, vermiculite becomes the new and ideal material in construction, industry and agriculture.
A.Chemical compositions:
Element | SiO2 | MgO | Fe2O3 | Al2O3 | CaO | K2O |
Content% | 3742 | 1123 | 518 | 917 | 0.50.8 | 5.57 |
B. Specification:
Specification | SizeMM | Expansion Coefficient | Impurity | Water | Sand |
SWT3 | 3-5 | >5.5 | <5 | <5 | <15 |
SWT4 | 1.5-2.5 | >5.5 | <5 | <5 | <15 |
SWT5 | 0.3-1 | >5.5 | <5 | <5 | <15 |
SWT6 | 0.2-0.7 | >5 | - | <5 | - |
C. Applications of Vermiculite in Different Industy
In Construction | In Industry | In Agriculture |
1.Fireproof Board | 1.Thermal Insulation, Refractory | 1.Horticulture |
2.Loosefill Insulation | 2.Sound Absorption Loose Filling | 2.Soil Improvement |
3 Construction Coatings | 3.Gaskets or Seals | 3.Fertilizer Carrier |
4 Lightweight Concretes | 4.Friction Linings | 4.Hydroponics |
5. Vermiculite Screeds | 5.Packing Materials | |
6.Vermiculite Plasters | 6.Animal Feedstuffs |
