Wyoming Mineral Corporation

Robert W Ritchey

Regis R Stana

Leonard Elikan

Hani A Abodishish

Precipitation of Fe.sub.3 HN.sub.4 H.sub.8 (PO.sub.4).sub.6 is prevented in the second cycle extractor, in a two cycle uranium recovery process, by washing ammonia laden organic solvent stream, from the second cycle stripper, with first cycle raffinate iron stream containing phosphoric acid, prior to passing the solvent stream into the second cycle extractor.

Raffinate wash of second cycle solvent in the recovery of uranium from

A metal containing acidic solution, also containing humic acid impurities and contaminants, is purified by contacting the acidic solution with a scrubbing agent consisting essentially of a metal extractant and from about 50 vol.% to about 90 vol.% of a hydrocarbon, where the scrubbing agent interacts with impurities and contaminants in the acidic solution to form a sludge phase which is removed and a purified acid phase which can be fed into a metal recovery process.

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Lakeland, FL, United States of America

Robert W Ritchey