Recovering metal values from marine manganese nodules

Details Recovering metal values from marine manganese nodules Recovering metal values from marine manganese nodules

1977-05-20

1978-10-31

Hearn, Brian

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423 37, 423 49, 423 50, 423144, 423150, 423140, 423605, 423DIG1, 423DIG4, C01G 4502

Patent

active

041234995

ABSTRACT:
A method for selectively extracting metal values from manganese bearing ores such as marine nodules. The ore is initially leached to solubilize manganese and other desirable metals as nitrates. The resulting solution is then treated with manganous hydroxide to selectively precipitate metals such as copper, nickel and cobalt. The enriched mixture of metal hydroxides is separated from the manganese nitrate solution, which is decomposed to recover high purity MnO.sub.2.

REFERENCES:
patent: 2842436 (1958-07-01), Dasher et al.
patent: 3169856 (1965-02-01), Mero
patent: 3578394 (1971-05-01), Palmer
patent: 3780159 (1973-12-01), Welsh
patent: 3787306 (1974-01-01), Senior
patent: 3950505 (1976-04-01), Sochol

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