Chemical Analysis of Uzbek Vermiculite

 

 Silicon oxide

SiO

41,10 % 

 Magnesium oxide

MgO 

16,73 % 

 Aluminium oxide

Al2O

12,64 % 

 Iron Oxide

Fe2O

9,92 % 

 Calcium oxide

CaO 

6,73 % 

 Potassium oxide

K2

2,92 % 

 Sodium oxide

Na2

1,83 % 

 Titanium oxide

TiO

1,09 % 

 Sulfur oxide

SO

0,24 % 

 Loss on ignition (1000 ° C)

LOI 

6,96 % 

 Hydrogen index (ISO 787-9)

pH 

6,8-7,0 

The chemical composition of the vermiculite does not change after exfoliation.

 

 

Chemical formula of vermiculite

(Mg,Fe++,Al)3(Al,Si)4O10(OH)2•4(H2O)

11.12.2017   12:01

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