Perlite :
It is a glassy volcanic rock in the different colours from grey tones to black,
which means perlestone.
It is known in three different status :
It used in many sectors like;
Foundry, Filter, Plaster, Agriculture, Insulation, Construction, Textile...
That rock perlite ore is crushed between 0.0-3.4 mm and sized by passing
through different screens is called Unexpanded Perlite Ore.
That classified perlite ore expands up to 4-35 times of the grain volume in the end of
blowing up by losing body water at the flame shock between 700 - 1200 °C is called
Expanded Perlite.
For more informations about perlite please visit this sites :
Some of Perlite documents :
