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Crude And Exfolaited Silver Vermiculite
Origin :Xinjiang,China
Expansion ratios:7-11times
Asbestos :None
Vermiculite is a member of the phyllosilicate group of minerals, resembling mica in appearance. It is found in various parts of the world, vermiculite is basically a hydrated phlogopite mica which has the remarkable ability to expand to many times its original volume when heated at 850 -1100°C.
Crude vermiculite consists of golden and silver vermiculite which are carefully classified into many sizes ,includes 0.3-1mm1.5-2.5mm0.5-1.41mm1-2mm2-4mm3-6mm4-8mm.
Exfoliated Vermiculite
The exfoliation process is carried out commercially by passing crude vermiculite through a furnace chamber in a controlled manner. The crude vermiculite then expands at right angles to the cleavage planes, producing concertina-shaped particles many times their original volume.Exfoliated vermiculite size ,includes 0.3-1mm1-3mm1-2mm2-4mm2-3mm
3-5mm3-6mm4-8mm6-8mm,special size can be done as per customer’s demands .
Silver raw vermiculite photos
silver expanded vermiculite photo
1.Silver vermiculite size
Xinjiang silver vermiculite(crude/raw/unexpanded)
Size | Grade | Expansion ratios | Impurity | Asbestos |
0.3-1mm | Superfine | 7times min | 10%max | None |
0.71-2mm/1-2mm | Fine | 9-10times | 10%max | None |
2-4mm | Medium | 10-11times | 10%max | None |
3-6mm 4-8mm | Large | 11times min | 10%max | None |
Xinjiang silver vermiculite(exfoliated/expanded )
Size | Geade | Expansion ratios | Impurity | Asbestos |
0.3-1mm | Superfine | 120-150kgs/m3 | 2%max | None |
1-3mm | Fine | 100-130kgs/m3 | 2%max | None |
2-4mm | Medium | 100-130kgs/m3 | 2%max | None |
3-6mm 4-8mm | Large | 100-130kgs/m3 | 2%max | None |
2.Silver 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 |
3.Applications:
Animal Feedstuffs | Lightweight Concretes And Screeds |
Bitumen Coated Vermiculite Screeds | Insulation |
Chemically Processed Vermiculite | Packing Materials |
Fire Protection | Vermiculite Board |
Friction Lining | Refractory Products |
Horticulture Agriculture Hydroponics | Silicate Bonded Shapes and Blocks |
Insulation in Steelworks and Foundaries | Vermiculite Plasters |
Raw vermiculite:50kgs/bag,ton bag
Expanded vermiculite:100liter bag,1000liter bag ,1500liter bag .Or as client's demands.
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