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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 ,includes0.3-1mm1.5-2.5mm0.5-1.41mm1-2mm2-4mm3-6mm4-8mm.
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 .
1.Vermiculite size :
|
Crude vermiculite |
Siver vermiculite: 0.3-1mm1-2mm2-4mm3-6mm4-8mm |
|
Golden vermiculite: 0-30um0.3-0.6mm0.65-1mm0.3-1mm0.5-1.41mm0.5-1.2mm1.2-3.5mm0.5-1.41mm1.5-2.5mm1-2mm2-4mm3-6mm4-8mm | |
|
Exfoliated vermiculite
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Silver vermiculite: 0.3-1mm1-3mm2-4mm20-325mesh |
|
Golden vermiculite: 0.3-0.6mm0.65-1mm0.3-1mm1-3mm2-4mm3-5mm4-8mm 20-325mesh |
2.Vermiculite Chemicals :
SiO2 |
37-42% |
Al2O3 |
9-17% |
Fe2O3 |
3.5-18% |
MgO |
11-23% |
K2O |
5-8% |
CaO |
1-2% |
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 |
Lingshou County Zhongrun Minerals Co., Ltd. was established in 2008 as a professional Manufacturer&Exporter to provide various mineral and chemicals products,including vermiculite,mica,perlite,calcium carbonate,color sand etc.
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