Expanded vermiculite horticultural vermiculite vermiculite insulation flavoring nursery vermiculite

Vermiculite is a layered structure of magnesium aluminum silicate water secondary metamorphic minerals, ore things like mica, usually black (K) mica by hydrothermal alteration or weathering made of water loss due to heat deflection when the expansion was like, shape exactly like leeches, so called vermiculite.
vermiculite chemical formula (Mg, Ca) 0.7 (Mg, Fe, Al) 6.0 [ (Al, Si) 8.0] (OH4.8H₂O)
by stages into vermiculite vermiculite ore and expanded vermiculite , by color vermiculite can be divided into gold, silver white vermiculite. White vermiculite. Vermiculite ore roasting at high temperatures the rapid expansion of its volume can be 8-20 times, after expansion of the proportion of 130-180kg/m³, has strong insulation properties.

a, the chemical composition of vermiculite:

Second, the use of vermiculite ;