2.Kinds:raw vermicultie ,expanded vermiculite

3.Expansion ratios of raw vermiculite:5.5-11times

4.Vermiculite Size:

0-30um,0.3-0.65mm,0.65-1mm  20-40mesh,10-40mesh, 0.5-1.5mm 0.3-1mm1.5-2.5mm,1-2mm,

2-4mm,3-8mm,4-8mm,etc

5.Data for reference:

Element: SiO2      MgO   Al2O3 Fe2O3  CaO K2O   H2O   PH

Content%37-42    11-23   9-17  3.5-18   1-3  5-8    7-18  7-11

Asbestos fibers:none

Melting  point: 1320°C-1370°C

Compressive resistance :100-150 Mpa

Solubility: Insolubility (most liquid )

Reactivity :Non reactive (except in very stong acids)

Corrosion resistance: Alkali-resistant

Thermal Conductivity: 0.045 - 0.069w/m °C Under ambient conditions