Aluminium Fluoride
Introduction:
Aluminium Fluoride is a white needle crystal or powder. It is decomposed into Al2O3 by vapour at high temperature, and with HF being released.
Application:
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.
Parameters:
| Items and Properties | Super Grade | First Grade | 2nd Grade |
| F | ≥61 | ≥60 | ≥58 |
| Al | ≥31 | ≥31 | ≥29 |
| Na | ≤0.3 | ≤0.4 | ≤2.8 |
| SiO2 | ≤0.1 | ≤0.3 | ≤0.3 |
| Fe2O3 | ≤0.06 | ≤0.1 | ≤0.12 |
| SO42- | ≤0.1 | ≤0.6 | ≤1 |
| P2O5 | ≤0.03 | ≤0.04 | ≤0.04 |
| Loss on drying | ≤0.5 | ≤1 | ≤5.5 |
|
| Density(g/cm3) | ≥1.5 | ≥1.3 | ≥0.7 |
Mesh size: 20, 40, 100, 200 and 325mesh are available.
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