Tantalum concentrates dissolution and purification method

Details Tantalum concentrates dissolution and purification method Tantalum concentrates dissolution and purification method

2007-02-27

2007-02-27

Langel, Wayne A. (Department: 1754)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vb metal

C423S062000, C423S067000, C423S068000

Reexamination Certificate

active

10709219

ABSTRACT:
A method for the dissolution and purification of tantalum ore and synthetic concentrates is described. The method preferably uses ammonium bifluoride as the fluoride source in place of the hydrofluoric acid used in the conventional methods. Other fluoride compounds such as NaF, KF, and CaF2may be used alone or in combination with ammonium bifluoride. The tantalum concentrate and fluoride source are combined with sulfuric acid to form a solution containing tantalum values and impurities. The tantalum values are then separated from the impurities by solvent extraction.

REFERENCES:
patent: 2880060 (1959-03-01), Campbell et al.
patent: 3117833 (1964-01-01), Pierret
patent: 3712939 (1973-01-01), Capps et al.
patent: 4446115 (1984-05-01), Endo et al.
patent: 4673554 (1987-06-01), Niwa et al.
patent: 4923507 (1990-05-01), Silva, Filho
patent: 5635146 (1997-06-01), Singh et al.
patent: 6010676 (2000-01-01), Singh et al.
patent: 6383459 (2002-05-01), Singh et al.

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