METHOD OF RECOVERING THORIUM
A method is described for recovering thorium from impurities found in a slag containing thorium and said impurities, comprising leaching a composition containing thorium with water, removing the water solution, treating the residue with hydrochloric acid, separating the solution from the insoluble residue, adjusting its acidity to 1 to 3 normal, adding oxalic acid, and thereafter separating the precipitated thorium oxalate digesting the residue from the hydrochloric acid treatment with a strong solution of sodium hydroxide at an elevated temperature, removing said solution and treating the insoluble residue with hydrochloric acid, separating the solution from the insoluble residue, adjusting the acidity of this solution to 1 to 3 normal, adding nitric acid to oxidize the iron present, adding oxalic acid and thereafter separating the thorium oxalate thus precipitated.
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-12-006995
- Assignee:
- U.S. Atomic Energy Commission
- Patent Number(s):
- US 2816122
- OSTI ID:
- 4304956
- Country of Publication:
- United States
- Language:
- English
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