Perlite

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Perlite
Posting date : Dec 04, 2007
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27-
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Perlite Perlite is a volcanic debris encountered the acidic lava lakes, marine after a sharp cooling after a vitrified form of volcanic rock, which formed in the late Jurassic to the Cretaceous period, which is some 100 million 5 3 1000 millions of years. According to the internal crystalline water content in different areas into obsidian, perlite Perlite is to smash the magmatic rocks heated to 1000 ° C to form the above expansion, with a closed porous structure, Particle diameter is generally 0.5 ~ 2.5mm between. Light, good ventilation, no nutritional elements. Easy to use in the mixed culture floating on the surface of soil Perlite Perlite Perlite the main chemical components: SiO2 CaO Al2O3 Na2O Fe2O3 K2O 70-75 % 0.1-2.0 % 12-16 % 1.0-5.0 % 0.1-1.5 % 1.0-5.0 % Major uses expanded perlite: 1. Construction areas : thermal insulation, fire retardant paint, sound-absorbing panels, and so on 2. Industrial fields :Pipe insulation, cold insulation insulation, filtration materials, the process of steelmaking slag build sets, rubber plastic filling material 3. Agriculture horticultural areas : soilless cultivation, soil improvement, pesticides ease amid antiseptic

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