Main Products: Vermiculite ,Sepiolite ,Zeolite ,Volcanic stone ,Mica
Top grade fireproof silver expanded vermiculite
USD $80 - $100 /Cubic Meter
Min.Order:70 Cubic Meters
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Shijiazhuang Mining Imp & Exp Trade Co., Ltd.
Business Type: Manufacturer,Trading Company
Shijiazhuang Hebei ChinaMain Products: Vermiculite ,Sepiolite ,Zeolite ,Volcanic stone ,MicaProduct Details
Introduction of Vermiculite
0.3-1 mm 1-3 mm 
1. Features: fireproof, heat insulating, sound and moisture absorbing, non-toxic, lightweight, antibiosis
2. A mineraloid of hydrated laminar magnesium-aluminum- iron silicate.
3. Chemical formation: (Mg,Fe,Al)3(Al,Si)4O10(OH)2•4H2O.
2-4mm 4-8mm
Chemical Composition of Silver Vermiculite
| ELEMEMT | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | TiO2 | K2O |
| CONTENT | 37.56% | 11.85% | 5.15% | 1.51% | 22.44% | 1.05% | 6.39% |
Property of Vermiculite
| PH | 7 |
| Asbestos | Free asbestos |
| Tensile strength | 1,000-1,500kgs/CM2 |
| Hardness | 1-1.8 |
| Thermal Conductivity | 0.047-0.081 W/(M.K) |
| Fire-proof | 1300-1350 ℃ |
| Operating temperature | 900-1000 ℃ |
| Water-absorbing | 26.5-40.6 % |
| Moisture absorbing | ≤2 % |
| Anti-freezing | For 15 cycles of freezing and thawing, Particle with no any change at-20℃ |
| Sound absorbing | 0.53-0.63 |
| Corrosion resisting | Alkali-resisting |
All Types of Vermiculite
| Golden raw vermiculite | Golden exfoliated vermiculite | Silver raw vermiculite | Silver exfoliated vermiculite |
| 0.3-1mm | 0.3-1mm | 0.3-1mm | 0.3-1mm |
| 1.5-2.5mm | 1-3mm | 1-2mm | 1-3mm |
| 2.5-6mm | 2-4mm | 2-4mm | 2-4mm |
| 3-8mm | 4-8mm | 4-8mm | 4-8mm |
| Other specification: 20-40mesh,60mesh,80mesh,100mesh,325mesh etc |
Application of Vermiculite
| In Industry | 1. Gaskets or Seals 2. Fireproofing 3. Insulation in steelworks and foundries 4. Packing Materials 5. Friction Linings 6. Refractory products 7. Processed vermiculite |
| In Agriculture | 1. Soil Improvement 2. Fertilizer Carrier 3. Horticulture 4. Hydroponics 5. Animal Feedstuffs |
| In Construction | 1. Fireproof Board 2. Loose fill Insulation 3. Construction Coatings 4. Lightweight Concretes 5.Vermiculite Plasters 6. Bitumen coated vermiculite plates |
Packaging & Shipping
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