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?Perlite is a naturally occurring amorphous volcanic glass that has the unique property of expanding from 9 to 30 times its original size when heated sufficiently ,the water molecules trapped in the rock turn into vapor causing the rock to expand. (This is the same principle as the water in popcorn that causes the kernel to pop when it is heated.)? Before it is expanded, perlite is commonly gray, but can also be green. After it has been heated, perlite is typically light gray to white .
Perlite is lightweight, inert, sterile, inorganic, odorless, incombustible, asbestos-free, non-toxic, rot proof, vermin proof, and pH-neutral.Perlite is an extremely safe and versatile mineral. Used for the filtration, agriculture , horticulture, construction, insulation, etc.
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1.Perlite?sand(unexpanded?perlite,raw perlite ) size:8-12mesh10-16mesh12-18mesh12-16mesh,14-24mesh,16-32mesh,20-40mesh30-50mesh,50-70mesh,etc.
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2.Physical?and?Chemical?Properties?of??Perlite?:
? Physical?Properties ? | Chemical?Compositions | ||
Exterior | Grey?peppets | SiO2 | 68-74 |
Specific?gravity | 2.2-2.4g/cc | Al2O3 | 12-16 |
Vickers?hardness | 5.5-7 | Fe2O3 | 0.1-2 |
Softening?point | 890-1090 | CaO | 0.15-1.5 |
Melting?point | 1280-1350 | Na2O | 4-5 |
PH | 6.5-7.5 | K2O | 1-4 |
Liquid?solubility | <1% | Loss?in?burning | 4-8 |
Acid?solubility | <2% | MgO | 0.3 |
Dioptre | 1.483-1.506 | ?Density | ?950-1100kgs/m3 |
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?Jumbo bag ,1-1.2MTS/BAG 20-24MTS/20GP container.
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