Vermiculite - Technical Details

Vermiculite is an hydrated Lamellar mica group of minerals, when heated to a high degree of temperature exfoliates and expands 8 to 14 times in volume and yields Exfoliated Vermiculite by loss of water molecules.

CHEMICAL COMPOSITION:

Average Moisture
7.89%
Loss on Ignition
11.05%
SiO2
30.52%
Fe2O3
16.32%
TiO2
2.63%
Al2O3
14.74%
CaO
9.47%
MgO
3.68%
Alkalies
3.68%

PHYSICAL CHARACTERISTICS:

The bulk density of Exfoliated Vermiculite is 172 Kg/M3 for size from 6mm to 12mm and 225 Kg/M3 for size below 1mm. The colour of Raw Vermiculite is light to dark brownish yellow, greenish or almost black. When heated, the colour changes to lustrous gold/golden brown with a silver (or) bronze tint.

 
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