PROGRESS REPORT OF PILOT PLANT SECTION RAW MATERIALS PROCESS TESTING

摘要

In the amine extraction process, uranium is stripped from the organic extract by use of a stripping agent for which the amine has a stronger affinity than it has for either sulfuric acid or the uranium sulfate complex. With sodium carbonate solution, for example, the amine associated with the uranyl sulfate complex and amine sulfate are con¬verted to free amine while the uranyl sulfate reacts with sodium carbonate to form a carbonate complex which is soluble in the aqueous phase. In most of the work carried out to date, sodium carbonate in aqueous solution has been employed as the stripping agent. In addition to sodium carbonate, the laboratory group has recommended aqueous solutions of sodium chloride and of ammonium nitrate.