Patent ID: 9702026
Date: 2017-07-11
CPC Classifications: B01J,C01B,C01G,C22B,C22C

Claim:
1. A process for isolation, extraction, or recovery of uranium from phosphoric acid comprising uranium using a continuous ion exchange system, the process comprising: (a) providing phosphoric acid comprising uranium; (b) pretreating the phosphoric acid to reduce suspended solids; (c) providing a continuous ion exchange system comprising cationic exchange (CE) resin comprising a chelating group that binds uranium; (d) applying the pretreated phosphoric acid to the CE resin under continuous conditions that cause the uranium to bind to the CE resin; and (e) recovering the uranium by treating the CE resin with an alkali solution to neutralize free acid in the CE resin and followed by regenerating the CE resin with an alkali carbonate solution at a pH that is greater than about 9.0, to produce a primary loaded regeneration solution and a regenerated CE resin.