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Aluminium Fluoride
Aluminium Fluoride
Aluminium fluoride (AlF3) is an inorganic compound used primarily in the production of aluminium. This colorless solid can be prepared synthetically but also occurs in nature.
It is used in the production of aluminium metal. Aluminium fluoride is an important additive for the production of aluminium by electrolysis. Together with cryolite, it lowers the melting point to below 1000 °C and increases the conductivity of the solution. It is into this molten salt that aluminium oxide is dissolved and then electrolyzed to give bulk Al metal.
When used with zirconium fluoride, aluminium fluoride is an ingredient for the production of fluoroaluminate glasses. It is also used to inhibit fermentation. It is a sputtering target for preparation of low index films.
Greenstar’s AlF3 process involves reaction of Aluminium Hydroxide with Hydro Fluosilicic acid. This is later filtered to remove Silica. The high purity aluminium fluoride is then crystallized and dried.
AlF3 is mainly used as a makeup ingredient in the molten electrolyte of the Aluminium reduction cell and in the electrolytic process for refining Aluminium.
In lower volume it is used in the glass industry, low melting glazer, enamels & Ceramics.
SPECIFICATION
|
Property |
Unit |
Standard purity |
High purity |
|---|---|---|---|
|
Purity as Alf3 |
% ww |
96.0 Min |
96.0 Min |
|
Loss on Ignition |
% ww |
1.0 Max |
1.0 Max |
|
Silica as SiO2 |
% ww |
0.12 Max |
0.04 Max |
|
Phosphates as P2O5 |
% ww |
0.015 Max |
0.015 Max |
|
Iron as Fe2O3 |
% ww |
0.015 Max |
0.015 Max |
|
Bulk Density |
GM/CC |
0.70 Min |
0.70 Min |