1.Raw Vermiculite 2.Size:0.7-2,0.3-1, 1.4-4,2.8-8mm 3.Expansio nratios:5.5-12times 4.Impurity:18%max 5.Origin:Hebei,CHina 1.Product introduction Vermiculite, chemical formula M g × (H2O) [Mg3 × (AlSiO3O10) (H2O)], is a magnesium water inclouded aluminum silicate secondary metamorphic minerals of layered structure. It likes mica in form, and usually come from weathered or hydrothermal alterated black (gold ) Mica. It will present a deflection shape after heat expansion and water loss, liking a leech pattern in form , so it gets the name vermiculite 2.Raw ermiculite consists of silver and gold vermiculite classified into diffrent size Raw golden vermiculite 0-30um,0.3-0.65mm,0.65-1mm 20-40mesh,10-40mesh, ,0.3-1mm 1.5-2.5mm,1-2mm,2-4mm,3-8mm,4-8mm, Raw silver vermiculite 0.25-0.7mm,0.3-1mm,1-2mm,2-4mm,3-8mm,4-8mm,20-40mesh,40-60mesh Special size ,we can do as client's demands 3.Raw vermiculite chemicals analysis Composition SiO2 MgO Al2O3 Fe2O3 CaO K2O ph Percentage 37-42 11-23 9-17 3.5-18 1-2 5-8 7-11 The chemical analysis of both crude and exfoliated vermiculite is the same. 4.Vermiculite usage : In Construction In Industry In Agriculture 1.Fireproof Board 1.Thermal Insulation.Refracory 1.Horticulture 2.Loosefill Insulation 2.Sound Absorption Loose Filling 2.Soil improvement 3.construction Coatings 3.Gaskets or Seals 3.Fertilizer Carrier 4.Lightweight Concretes 4.Friction Linings 4.Hydroponics 5.Vermiculite Screeds 5.Packing Materials 6.Vermiculite Plasters 6.Animal Feedstuffs 5.packing :PP woven bag or depand on client 's requirements 6.Price :it is negotiated as per vermiculite specification ,quality ,quantities client require 7.Sample :it is available 8.Raw gold vermiculite