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Aluminium Fluoride

Hexafluorosilicic acid is produced as a by-product of wet-process phosphoric acid production process. This by-product neutralized by aluminium hydroxide forms a new product Aluminium Fluoride.

Physical - chemical parameters of aluminium fluoride

Parameter

Normal value

Aluminium fluoride (AlF3) content by mass (%), not less than

96

Loss on ignition  (300 °C), %, not more than

1

Free aluminium oxide (Al2O3) content by mass (%), not more than

2

Silicon oxide (SiO2) content by mass (%), not more than

0,18

Iron oxide (Fe2O3) content by mass (%), not more than

0,02

Sulphates (SO4) content by mass (%), not more than

0,1

Phosphorus pentoxide (P2O5) content by mass (%), not more than

0,01

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