SEPARATION OF AMERICIUM FROM PROMETHIUM

Patent · Wed Jul 01 00:00:00 EDT 1959

OSTI ID:4230894

Pressly, R E

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
• Country of Publication: United States
• Language: English

Related Subjects

ACIDS
AMERICIUM
BORIC ACID
BORON OXIDES
CHEMISTRY
FISSION PRODUCTS
HEATING
NITRIC ACID
PRECIPITATION
PROMETHIUM 147
RECOVERY
SEPARATION PROCESSES
SILICON FLUORIDES
SOLUTIONS