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Silver crude vermiculite(Natural raw vermiculite)
H.S code:2530102000
Chemical formula M g × (H2O) [Mg3 × (AlSiO3O10) (H2O)],
Color:silver
1.Silver crude vermiculite grade(size)
| Vermiculite grade | Vermiculite size | Expansion ratio | Impurity |
| Super fine | 0.3-1mm0.335-1mm | 7-9times | 1.Impurity:5%-10% 2.Moisture:5%max 3.Asbestos:None 4.Origin:Xinjiang,China 5.Sample is free with 1kgs 6.Price is negotiated
|
| Fine | 1-2mm 0.71-2mm | 9-10times | |
| Medium | 2-4mm 1.4-4mm | 10-11times | |
| Large | 3-6mm 4-8mm 2.8-8mm | 8-10times |
Special size ,we can do as per client's requirements
2.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 |
Physical properties
| Melting point | 1320°C-1370°C | Asbestos | None |
| Hardness | 1-1.5 | PH | 8-11 |
| Solubility | Insolubility (most liquid ) | Combustibility | Non-combustible |
| Reactivity | Non reactive (except in very stong acids) | Corrosion resistance | Alkali-resistant |
2-4mm medium grade silver crude vermiculite
