Vermiculite - Specifications

Vermiculite Properties

Sintering temperature 1260°C

Melting point 1330°C

Specific heat 1.8 kJ/kg.K.

Specific gravity 2.5

PH value 8.0 - 9.5

Cation exchange 60 milli-equivalents per 100 grammes

Thermal conductivity 0.062 - 0.065W/mK

	Typical Chemical Analysis
	SiO²	39.00%
	TiO²	0.75%
	Al²O³	8.75%
	MgO	26.00%
	Fe²O³	5.50%
	CaO	2.00%
	K²O	5.00%
	Cr²O³	1.25%
	Nominal Sizes of Hoben International Exfoliated Vermiculite

Name

Nominal Size

Loose Bulk Density

^Large

^{3mm - 15mm}

70 Kg / M³

^Medium

^{2mm - 8mm}

85 Kg / M³

^Fine

^{0.5mm - 3mm}

100 Kg / M³

^Superfine

^{0.5mm - 1.7mm}

105 Kg / M³

^Micron

^{0.1mm - 1.0mm}

120 Kg / M³