A METHOD TO MINTAIN A HIGH FE+2/FE+3 RATIO IN THE STRIPPING SYSTEM FOR THE RECOVERY OF URANIUM FROM WET PROCESS PHOSPHORIC ACID

摘要

A process to maintain a high iron +2/ iron +3 concentration in the reductive stripping system for recovering uranium from wet-process phosphoric acid, comprises contacting partially oxidized strip acid, containing substantial amount of iron +3, which had just previously stripped uranium values from an organic solvent, with elemental iron to reduce iron +3 to iron +2 and provide a FE +2 / FE conversion ratio of from 1.5 to 3.0