Improvements in or relating to the production of aluminium fluoride

Abstract

Aluminium fluoride of high purity is prepared by treating hydrated alumina with anhydrous hydrogen fluoride at a temperature below 550 DEG C., and the product with a further excess of anhydrous hydrogen fluoride at a temperature above 650 DEG C. and preferably below 750 DEG C.

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    US-6187280-B1February 13, 2001Ausimont S.P.A.Process for the preparation of aluminum fluoride