Recovery and separation of gadolinium and gallium

Details Recovery and separation of gadolinium and gallium Recovery and separation of gadolinium and gallium

1979-02-05

1980-04-15

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75109, 75121, 204105R, 423 211, 423111, 423122, C22B 5800, C22B 5900

Patent

active

041982312

ABSTRACT:
Gallium and gadolinium are recovered and separated from scrap material of substances which contain both of these elements in the form of oxides or compounds which can be transformed to the oxides.
The scrap is finely ground and then dissolved in a strong, aqueous mineral acid. The gadolinium is precipitated from the purified solution as the oxalate; then the gallium is deposited in the metallic form by means of electrolysis. The electrolytic deposition of the gallium can also take place before the gadolinium is precipitated out as the oxalate.

REFERENCES:
patent: 1855455 (1932-04-01), McCutcheon
patent: 3170857 (1965-02-01), Dotzer
patent: 3506585 (1970-04-01), Otsuka et al.
patent: 3927172 (1975-12-01), Stevens
patent: 4071422 (1978-01-01), Charlton et al.

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