Expanded Perlite for Dressing of Board

Product Description

It is made by selected specific particle size ore to be expanded by heating in furnace. And the precise control of time temperature and raw material stayed in air makes product surface melting,stomatal closure,irregular spherical,internal structure to be porous cavity,surface vitrified closed,glossy smooth.And it is new insulation materials with very stable physical and chemical properties.
Process Description:Ore→Classify→Dry→Feeding→Clacine→Cool→Comminute→Winnowing→ Select →Granulation→bagging;

Main features
Light weight, heat, sound insulation, fireproof, thermostability, aging resistance, small water absorption rate,etc.

Particle size (mm) 0.**1.5
Unit weight (kg/m3) *0
Heat conductivity (W/m.k) 0.**2~0.**5
Floating rate *8%
Surface vitrification rate *5%
water absoption(vacuum filtration measure%)) *0~*0
1Mpa pressure volume loss  *8%**6%
Fireproof extent ********0ºC
Use temperature ***0ºC