1.Vermiculite chemicals
Composition | SiO2 | MgO | Al2O3 | Fe2O3 | CaO | K2O | ph |
Percentage | 37-42 | 11-23 | 9-17 | 3.5-18 | 1-2 | 5-8 | 7-11 |
The chemical analysis of both crude and exfoliated vermiculite is the same.
2. Vermiculite physical properties
Item | Specifications | Item | Specification |
Porosity: | 1100Kg/m3-1200Kg/m3 | Impurity | 15%max |
Hardness | 1-1.5 | Compressive resistance | 100-150 Mpa |
Melting point | 1320C-1370C | asbestos | None |
Moisture conten: | 5%max | Antibioticity | Good |
Moisture absorbency | <2 | Corrosion resistance | Alkali-resitant |
water-absorbable | 500-650liter/m3 | Thermal Conductivity | 0.063 - 0.069w/mC Under ambient conditions |
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