Vermiculite V4 Coarse

Applications

Loft insulation Packaging Loose-pour aggregate Backfill for firebacks and boilers Firebase embers High temperature insulation Wicking agent Chimney lining

Chemical Properties	Vermiculite V4 is an aluminium iron silicate. Typical composition is: Silicon (SiO2) 37 - 40% Magnesium (MgO) 21 - 29% Aluminium (Al2O3) 6 - 10% Iron (Fe2O3) 4 - 8% Potassium (K2O) 3 - 6% Calcium (CaO) 1 - 4% Carbon (CO2) 1 - 2% Titanium (TiO2) 0.5 - 1% Floride (F) 0.1 - 0.75% Chromic Oxide (CrO3) 0.05 - 0.15% Phosphorus Pentoxide (P2O5) 0.01 - 0.90% pH* 7 - 10 Organic Matter Nil * pH 7-10, but owing to the presence of associated carbonate rock impurities the reaction is normally alkaline.
Physical Properties	Exfoliated Vermiculite V3 is golden brown granule in plate-like layers of a concertina appearance. Sintering Temperature 1200 -1260oC Melting Point 1330oC Specific Heat 1.08 Kj/kgK Thermal Condcuctivity at normal atmospheric temperature K = 0.062 - 0.065 w/mc
Grading Specifications	The bulk density is 70-85 kg/m3 at the bagging head. However, a 10-15% increase in density should be allowed for in normal storage, handling and transport. Grading Specification - % by weight passing 8.0 65 - 90 4.75 20 - 50 3.35 5 - 30 2.36 2 - 20 1.18 0 - 10
Packaging	Vermiculite V4 is normally supplied in plastic sacks containing 100 litres (approximately 3.5ft3). Alternative packaging is available to order.
Health and Safety	Exfoliated Vermiculite V4 is a heat-processed, inorganic material and since no chemical changes occur it is considered non-reportable. It is also fibre-free, conpletely non-irritant, an inert, incombustible, non-abrasive, rot-proof, odouless, clean to handle and without the slighest danger to face of hands. However, as with all fine materials, inhalation of dust should be avoided.