Treatment of subterranean uranium-bearing formations
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United States of America Patent
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Jun 5, 1984
Issued Date -
N/A
app pub date -
Jul 22, 1982
filing date -
Aug 19, 1980
priority date (Note) -
Expired
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Abstract
A process is described for improving yields and leaching rates of mineral values in highly reducing uranium-bearing formations, while minimizing deleterious environmental impact, by injecting an oxidant such as gaseous air or O.sub.2 into the formation prior to leaching. The preoxidation may be enhanced by the presence of CO.sub.2 gas in the pre-leaching oxidant. The process is particularly suitable for systems employing a CO.sub.2 /O.sub.2 lixiviant. The presence of sulfate ion further improves the leaching rate of such a system.
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