Process for the production of fluorometallate salts useful in th

Details Process for the production of fluorometallate salts useful in th Process for the production of fluorometallate salts useful in th

1995-05-03

1998-08-04

Bos, Steven

Chemistry of inorganic compounds

Halogen or compound thereof

Plural metal or metal and ammonium containing

423464, 423 72, 423185, C01B 900, C01B 908, C01D 316, C01G 2302

Patent

active

057889481

ABSTRACT:
The present invention relates to a process for the production of intermediates useful in the processing of mineral sands and related materials characterized in that the process comprises:
(a) dissolving a metal fluoride or metal chloride compound in an organic solvent; and either
(b)(i) adding an ammonium fluoride to the metal fluoride or metal chloride compound dissolved in the organic solvent in step (a) to precipitate an ammonium fluorometallate from the organic solvent; and
(ii) dissolving the ammonium fluorometallate from step (b)(i) in water and adding an alkali fluoride or an alkali chloride or an alkali nitrate to produce an alkali fluorometallate and an ammonium fluoride or an ammonium chloride or an ammonium nitrate; or
(c) optionally adding the metal fluoride compound dissolved in the organic solvent in step (a) to an alkali fluoride dissolved in water or in aqueous hydrogen fluoride to produce an alkali fluorometallate directly.

REFERENCES:
patent: 2832731 (1958-04-01), Cunningham
patent: 3653850 (1972-04-01), Eberts
patent: 5482691 (1996-01-01), O'Donnell et al.

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