Metals recovery from hydrochloric acid solutions

Details Metals recovery from hydrochloric acid solutions Metals recovery from hydrochloric acid solutions

1976-02-02

1976-08-17

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423 65, 423 82, 423 85, 423122, 423140, 423592, C01G 3700, C01G 3100, C01G 3300

Patent

active

039754952

ABSTRACT:
The present invention provides a method for recovering niobium from a hydrochloric acid solution which contains niobium and vanadium and which may also contain other metals such as, for example, zirconium, titanium, iron, chromium and aluminum. Broadly, the method comprises heating such a solution at a low pH for a period of time sufficient to form a niobium-containing precipitate substantially free of vanadium. Preferably, the solution is heated in the presence of a small amount of sulfuric acid. The precipitate then is recovered from the solution.

REFERENCES:
patent: 1908473 (1933-05-01), Cunningham et al.
patent: 2259396 (1941-10-01), Schlecht et al.
patent: 2537316 (1951-01-01), Oppegaard et al.
patent: 3063795 (1962-11-01), Smith
patent: 3099526 (1963-07-01), Li et al.
patent: 3190719 (1965-06-01), Kelmers et al.
patent: 3790658 (1974-02-01), Fox et al.

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