Main Products: Vermiculite ,Sepiolite ,Zeolite ,Volcanic stone ,Mica
bulk vermiculite
USD $300 - $600 /Metric Ton
Min.Order:14 Metric Tons
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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
Vermiculite
Introduction of Vermiculite
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.
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 |
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 | above 200 % by weight, 37% by volume |
| Moisture absorbing | 1-2 % |
| Anti-freezing | For 15 cycles of freezing and thawing, Particle with no any change at-20℃ |
| Sound absorbing | 60-90% |
| Corrosion resisting | Alkali-resisting |
Specification of Silver Raw Vermiculite
| Size | Density | Specification | Moisture | Expansion Rate |
| 0.3-1 mm | 0.8-1.0 g/cm3 | 85% min | 3% max | 6.5 Times min |
| 1-2 mm | 0.8-1.0 g/cm3 | 85% min | 3% max | 7.5 Times min |
| 2-4 mm | 0.8-1.0 g/cm3 | 85% min | 3% max | 7.5 Times min |
| 4-8 mm | 0.8-1.0 g/cm3 | 85% min | 3% max | 7.5 Times min |
Chemical Composition of Vermiculite
| ELEMEMT | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | TiO2 | K2O | |
| Silver Vermiculite | CONTENT% | 37.56 | 11.85 | 5.15 | 1.51 | 22.44 | 1.05 | 6.39 |
| ELEMEMT | SiO2 | Al2O3 | Fe2O3 | CaO | MgO | TiO2 | K2O | |
| Golden Vermiculite | CONTENT% | 43.75 | 15.55 | 15.8 | 1.32 | 8.98 | 1.67 | 5.19 |
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