Hydrometallurgical process for the treatment of ores
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United States of America Patent
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Jun 9, 1981
Grant Date -
N/A
app pub date -
Jun 28, 1978
filing date -
Jul 5, 1977
priority date (Note) -
Expired
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Abstract
A process for the recovery of uranium values from uranium-bearing material by sulphuric acid leaching when the material also contains siliceous matter which is at least partly soluble in sulphuric acid. The process comprises leaching the material with sulphuric acid in an aqueous slurry under oxidizing conditions at a temperature within the range of from about 65.degree. C. to about 200.degree. C. and at elevated pressure, with sulphuric acid being present in a quantity only slightly in excess of the amount required to dissolve the uranium and any other element whose dissolution is desired, to produce an insoluble residue containing siliceous matter and a leach solution containing dissolved values of uranium and any other desired element.
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