METHOD OF FLUORINATION OF A METAL HALIDE IN AN AQUEOUS MEDIUM

摘要

The invention describes a method of fluorination of at least one metal halide MX where M is a metal selected from the alkali metals and the alkaline earth metals and X is a halogen selected from chlorine, bromine and iodine, said method comprising the reaction, in the presence of water, of at least said metal halide with hydrofluoric acid. Said fluorination method is implemented in a device provided with a boiler in which the fluorination reaction takes place between the hydrofluoric acid and at least said metal halide MX, a distillation column in which circulate the hydracid vapours HX formed, and a system for absorbing the hydracid vapours HX positioned at the head of said column.