Description
Vermiculite is the mineralogical, it resembles mica in appearance and subjected to heat, it has the unusual property of exfoliating or expanding, due to the generation of interlinear steam.

Within the internal structure of vermiculite lie water molecules, which when rapidly heated to high temperature, transform into steam causing the vermiculite particulars to increase in volume. In exfoliated form it has the low density and biological inertness of expanded perlite, while maintaining a chemically active surface.

The cation exchange potential of vermiculite and its layer-silicate structure are properties which can be used as the basis for numerous products including intumescent coatings and gaskets, inorganic films and treatment of nuclear and other toxic waste. The physical thickness of the vermiculite particles can be altered by both thermal exfoliation and chemical exfoliation.

Application

• Horticulture – used in the horticultural sector in its exfoliated form and has the benefits of improving soil aeration while retaining moisture and nutrients to feed roots, cuttings and seeds for faster, maximum growth.
• Packaging Material – easily poured around irregular shaped objects & provides a cushion against shock during handling & transportation.
• Animal Feeds – support & carrying medium for range of nutrients, act as slow release agent for the active ingredients carried & provided extra roughage.
• Fire Protection – low density & good insulation properties exfoliated vermiculite is used to build fire barrier & protect steel building elements.
• Refractory & High Temperature Insulation – used in production of insulation shapes which are typically produced using finer grades of the mineral & sodium / potassium silicate.
• Lightweight & Concrete Screeds – used with portland cement & other aggregates, placing aids & water to produce roof & floor concrete screeds.