Expanded Vermiculite Used Organic Fertilize Soilless Matrix Agricultural Cultivation

With the process of removing sand and impurity, crashing, filtrating, vermiculites become exfoliated, they can be divided into different sizes: 0-1mm, 1-2mm, 2-4mm, 1-3.5mm, 3-5mm, 4-6mm and so on, we can produce many sizes as clients required. There are two kinds of vermiculite in our country golden vermiculite and silvery vermiculite, they have different chemical components.
Golden vermiculite
Chemical componentsChemical CompositionSiO2Al2O3MgOCaOPHFe2O3impuritycontents(%)4118210.87-103.5< 3Silvery vermiculite
Chemical componentsChemical CompositionSiO2AL2O3 AL2O3MgO MgCaOFeOFe2O3TiO2contents(%)41.212.6824.220.961.544.061.33Chemical CompositionK2OP2O5H2ONa2O Na2OMnO MnOimpurityL.O.I(%)contents(%)5.970.0631.60.043< 56.71Expanded vermiculite
Exfoliated vermiculite in the processof high temperature roasting, they can expand many times, and the average density of the expanded vermiculite is about 100-130kg/m3, they have small air separation layer, so they are good constructionmaterials of heat preservation,thermal insulationsound absorption, and corrosionproof, and also industry loading material, coating, anti-fire materials. Expanded vermiculite can extensively used in many industries such as construction, metallurgy,chemical industry,light industry, machinery, electric power, petroleum, environment protection communication, transportationand horticulture.
Main applications:
1.construction materials: light materials such as light concrete materials, light calcimineand light mortar.
2.heat resisting material: wall materials, anti-fire board, anti-fire mortar, firebrick, and brake linings.
3.heat preservation,thermal insulationand sound absorptionmaterials:underground pipeline, heat preservation material used in hothouse pipeline, decoration material used in upholsteryand tunnel, also wall and ceiling in the public.
4.metallurgy: steel frame cladding materials,removal of slagwhen manufacture of iron and foundry
5. agriculture, forestry and horticulture: golf courselawn, seed preservation agent, soil regulation agent, wetting agent, plant growth agent, feed additives, horticulture mixture, fishing and bait.
6 other aspects: adsorptive material, filter aid, active carrierof chemical and chemical fertilizer, sewage treatment, adsorption of seawater oil pollution, cigarettes filter and explosive density regulators.
Applications and technology indicators of different sizes:
Main specifications and technology indicators of vermiculite:sizebulk specific gravity(Kg/ M2)water absorption(%)thermal conductivity (k·M2·h·ºC)impurity(%)4-8mm70-1104800.04532-4mm80-1204650.04531-2mm80-1504200.045320-40mesh100-1804100.045-0.055240-60mesh100-1804000.045-0.055260-100mesh100-1804000.045-0.0552