In situ uranium leaching using high pressure CO.sub.2 /O.sub.2 s

Details In situ uranium leaching using high pressure CO.sub.2 /O.sub.2 s In situ uranium leaching using high pressure CO.sub.2 /O.sub.2 s

1980-12-31

1983-07-05

Kyle, Deborah L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423 18, 423 20, 299 4, C22B 6002

Patent

active

043917828

ABSTRACT:
A process is described for improving yield and leaching rates of mineral values in uranium-bearing formations associated with high brine aquifers by using high pressure CO.sub.2 /oxidant in the leaching solution. The high pressure CO.sub.2 overcomes the inhibiting effect of NaCl on the rate of leaching. Uranium is recovered at the well head by ion exchange at a pH of about 4.5 to about 5.0 either under pressure to keep the CO.sub.2 in solution or with provision for CO.sub.2 recovery and recycle.

REFERENCES:
patent: 3130960 (1964-04-01), Martin
patent: 4105253 (1978-08-01), Showalter
patent: 4235850 (1980-11-01), Otto, Jr.

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