Back to results
US 6,010,671 AGranted
Process for selective recovery of uranium from sludge
AssigneeSiemens Power Corporation
InventorRichard T. Kimura
Life of this patent
Estimating the term…
Abstract
A process for recovering uranium from a waste sludge involves treating the sludge with a non-reactive, non-absorptive cellulose filtration media, adding an oxidant and heating the mixture to dissolve any uranium present. The mixture is passed through a filtration device precoated with the same filtration media, where the solids are captured while the dissolved uranium passes through as part of the filtrate, for recovery.
Claims13
A process for the separation and recovery of uranium from a sludge comprising:
- providing a sludge containing uranium in the form of a slurry;
- adding a uranium dissolving compound to the slurry to dissolve the uranium;
- heating the slurry containing dissolved uranium;
- providing a cellulose filtration media which is non-reactive with uranium and non-absorptive of uranium in the form of a raw cellulose slurry;
- providing a filtration device;
- feeding the raw cellulose slurry to the filbration device in an amount sufficient to form a coating layer therein;
- passing the dissolved uranium containing slurry through the cellulose coated filtration device such that solids in the uranium containing slurry are captured in the filtration device and dissolved uranium passes therethrough in a liquid filtrate.
4 more elements
Dependencies are inferred from the claim text.