Process for dissolving tantalum/columbium materials containing a

Details Process for dissolving tantalum/columbium materials containing a Process for dissolving tantalum/columbium materials containing a

1983-11-14

1987-05-05

Rutledge, L. Dewayne

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vb metal

75121, C01G 3100

Patent

active

046631305

ABSTRACT:
Disclosed is a process for dissolving tantalum and/or columbium-containing materials contaminated with alkali metal impurities. The tantalum and columbium materials are digested in a solution comprising hydrofluoric acid and a fluosilicate-containing compound. The alkali metals are reacted to form precipitated fluosilicates, which then can readily be separated.

REFERENCES:
patent: 2816815 (1957-12-01), Ruhoff et al.
patent: 3658511 (1972-04-01), Gustison
patent: 3972710 (1976-08-01), Meyer
patent: 4309389 (1982-01-01), Meyer

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