Process for the recovery of tantalum and/or niobium from acid so

Details Process for the recovery of tantalum and/or niobium from acid so Process for the recovery of tantalum and/or niobium from acid so

1975-08-20

1976-08-24

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75101R, 75121, 423 63, C22B 3424

Patent

active

039764753

ABSTRACT:
The invention is concerned with the recovery and separation of tantalum and/or niobium from a solution of these elements in aqueous mineral acid, preferably sulfuric acid. The element or elements is/are extracted from the acid solution thereof by means of an amine, preferably a tertiary, long-chained alkyl amine, in the presence of hydrogen peroxide and of fluoride ions. Thereby the extraction and separation can be performed effectively at comparatively low acid concentration, normally below a concentration of 4N.

REFERENCES:
patent: 2927855 (1960-03-01), Keller et al.
patent: 2950966 (1960-08-01), Foos
patent: 2953453 (1960-09-01), Foos
patent: 3051547 (1962-08-01), Bielecki
patent: 3065046 (1962-11-01), Foos et al.
patent: 3117833 (1964-01-01), Pierret
patent: 3712939 (1973-01-01), Capps et al.

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