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Title: LARGE SCALE METHOD FOR THE PRODUCTION AND PURIFICATION OF CURIUM

Abstract

A large-scale process for production and purification of Cm/sup 242/ is described. Aluminum slugs containing Am are irradiated and declad in a NaOH-- NaHO/sub 3/ solution at 85 to 100 deg C. The resulting slurry filtered and washed with NaOH, NH/sub 4/OH, and H/sub 2/O. Recovery of Cm from filtrate and washings is effected by an Fe(OH)/sub 3/ precipitation. The precipitates are then combined and dissolved ln HCl and refractory oxides centrifuged out. These oxides are then fused with Na/sub 2/CO/sub 3/ and dissolved in HCl. The solution is evaporated and LiCl solution added. The Cm, rare earths, and anionic impurities are adsorbed on a strong-base anfon exchange resin. Impurities are eluted with LiCl--HCl solution, rare earths and Cm are eluted by HCl. Other ion exchange steps further purify the Cm. The Cm is then precipitated as fluoride and used in this form or further purified and processed. (T.R.H.)

Inventors:
;
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4232573
Patent Number(s):
2887358
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-13-022143
NSA Number:
NSA-13-022143
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; ADSORPTION; ALUMINUM; AMERICIUM 241; AMMONIA; ANIONS; CARRIERS; CENTRIFUGATION; CURIUM 242; CURIUM FLUORIDES; EVAPORATION; FABRICATION; FILTERS; HIGH TEMPERATURE; HYDROCHLORIC ACID; IMPURITIES; ION EXCHANGE; IRON HYDROXIDES; LITHIUM CHLORIDES; MELTING; MIXING; OXIDES; PATENT; PRECIPITATION; RARE EARTHS; RECOVERY; REFINING; REPROCESSING; RODS; SEPARATION PROCESSES; SLURRIES; SODIUM CARBONATES; SODIUM HYDROXIDES; SODIUM NITRATES; SOLUBILITY; SOLUTIONS; TEMPERATURE; WATER

Citation Formats

Higgins, G.H., and Crane, W.W.T. LARGE SCALE METHOD FOR THE PRODUCTION AND PURIFICATION OF CURIUM. United States: N. p., 1959. Web.
Higgins, G.H., & Crane, W.W.T. LARGE SCALE METHOD FOR THE PRODUCTION AND PURIFICATION OF CURIUM. United States.
Higgins, G.H., and Crane, W.W.T. Tue . "LARGE SCALE METHOD FOR THE PRODUCTION AND PURIFICATION OF CURIUM". United States.
@article{osti_4232573,
title = {LARGE SCALE METHOD FOR THE PRODUCTION AND PURIFICATION OF CURIUM},
author = {Higgins, G.H. and Crane, W.W.T.},
abstractNote = {A large-scale process for production and purification of Cm/sup 242/ is described. Aluminum slugs containing Am are irradiated and declad in a NaOH-- NaHO/sub 3/ solution at 85 to 100 deg C. The resulting slurry filtered and washed with NaOH, NH/sub 4/OH, and H/sub 2/O. Recovery of Cm from filtrate and washings is effected by an Fe(OH)/sub 3/ precipitation. The precipitates are then combined and dissolved ln HCl and refractory oxides centrifuged out. These oxides are then fused with Na/sub 2/CO/sub 3/ and dissolved in HCl. The solution is evaporated and LiCl solution added. The Cm, rare earths, and anionic impurities are adsorbed on a strong-base anfon exchange resin. Impurities are eluted with LiCl--HCl solution, rare earths and Cm are eluted by HCl. Other ion exchange steps further purify the Cm. The Cm is then precipitated as fluoride and used in this form or further purified and processed. (T.R.H.)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {5}
}