Vemiculite is a mineraloid of hydrated laminar magnesium-aluminum-iron silicate.Its chemical composition grearly varies and chemical formation could be simplified as(Mg,Fe,Al)3(Al,Si)4O10 (OH)24H2O.When heated to a temperature of about 850-950℃,it instantly expend up to 15-25 times as water flashing into steam,maximum 30 times its original bulk volume.There is a color change during expansion from golden brown into silber white depending upon the composition of the vermiculite and temperature.
CHEMICAL COMPOSITION OF VERMICULITE
ELEMENT | SiO2 | K2O | Al2O3 | P2O5 | Fe2O3 | S | CaO | MnO | MgO | H2O | LOl | TiO2 |
CONTENE(%) | 37.56 | 6.39 | 11.85 | 0.085 | 5.15 | 0.046 | 1.51 | 0.03 | 22.447 | 7.18 | 6.71 | 1.05 |
VERMICULITE IN INDUSTRY
IN INDUSTRY | 1.GASKETS OR SEALS 2.FIREPROFFING 3.INSULATION IN STEELWORKS AND FOUNDRIES 4.PACKING MATERIALS 5.ANIMAL FEEDSTUFFS 6.FRICTION LININGS 7.REFRACTORY PRODUCTS 8.PROCESSED VERMICULITE |
VERMICULITE IN AGRICULTURE
VERMICULITE IN AGRICULTURE | 1.SOIL IMPROVEMENT 2.FERTILIZER CARRIER 3.HORTICULTURE 4.HYDROPONICS
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VERMICULITE IN CONSTRUCTION INDUSTRY
VERMICULITE IN CONSTRUCTION INDUSTRY | 1.BITUMEN COATED VERMICULITE PLATES 2.CONSTRUCTION COATINGS 3.LIGHTWEIGHT CONCRETES 4.LOOSE FILL INSULATION 5.VERMICULITE PLASTERS 6.FIREPROOF BOARD |
Shijiazhuang Mining Imp&Exp Trade Co.,Ltd.owns self import and export right.our Our company has strong economic base.Now we have one sepiolite mine and one vermiculite mine.The mining capacity is 60,000 tons per year.Besides,our company has own sepiolite factory and vermiculite factory.The production capacity is 30,000 tons per year.Our products are mainly exported(above80%) and also sold domestically.Our market covers various countyies and regioins like USA,Germany,France,Italy,Mexico,Singapore,Malaysia,Japan,South,Korea,Taiwan etc.The marke share is growing rapidly and firmly.
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