RECOVERY OF THORIUM, URANIUM, AND RARE EARTHS FROM MONAZITE SULFATE LIQUORS BY THE AMINE EXTRACTION (AMEX) PROCESS
An economical two-cycle solvent extraction process has been developed on a bench scale for the separate recovery of thorium and uranium from monazite sulfate liquors. Thorium is extracted in the first cycle with a primary amaine in hydrocarbon diluent and uranium in the second cycle with a secondary or tentiary amine in hydrocarbon diluent. The principal advantages of the process over conventional precipitation methods are the essentially complete recoveries of both thorium and each other and from rare earths and phosphate. The rare earths can also be recovered and separated from phosphate by amine extraction if desired. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- DOE Contract Number:
- W-7405-ENG-26
- NSA Number:
- NSA-13-018778
- OSTI ID:
- 4256226
- Report Number(s):
- ORNL-2720
- Country of Publication:
- United States
- Language:
- English
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