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Title: SEPARATION OF AMERICIUM FROM PROMETHIUM

Patent ·
OSTI ID:4230894

Promethium-147 is separated from americium in acidic aqueous solution by adding fluosilicic acid to the solution, heating the solution to form a promethium precipitate and separating the precipitate from solution. The precipitate is then re-dissolved by ihe addition of boric acid and nitric acid, and re-precipitated by the addition of fluosilicic acid. This procedure is repeated six or more times to obtain a relatively americium-free promeihium precipitate. Americium may be separately recovered from the supernatant liquids. This process is applicable to the recovery of promethium from fission-product solutions which have been allowed to decay for a period of two to four years.

Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-14-002483
Assignee:
U.S. Atomic Energy Commission
Patent Number(s):
US 2893827
OSTI ID:
4230894
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
United States
Language:
English