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Title: Magnetic separation as a plutonium residue enrichment process

Abstract

We have subjected several plutonium contaminated residues to Open Gradient Magnetic Separation (OGMS) on an experimental scale. Separation of graphite, bomb reduction sand, and bomb reduction sand, and bomb reduction sand, slag, and crucible, resulted in a plutonium rich fraction and a plutonium lean fraction. The lean fraction varied between about 20% to 85% of the feed bulk. The plutonium content of the lean fraction can be reduced from about 2% in the feed to the 0.1% to 0.5% range dependent on the portion of the feed rejected to this lean fraction. These values are low enough in plutonium to meet economic discard limits and be considered for direct discard. Magnetic separation of direct oxide reduction and electrorefining pyrochemical salts gave less favorable results. While a fraction very rich in plutonium could be obtained, the plutonium content of the lean fraction was to high for direct discard. This may still have chemical processing applications. OGMS experiments at low magnetic field strength on incinerator ash did give two fractions but the plutonium content of each fraction was essentially identical. Thus, no chemical processing advantage was identified for magnetic separation of this residue. The detailed results of these experiments and the implicationsmore » for OGMS use in recycle plutonium processing are discussed. 4 refs., 3 figs., 9 tabs.« less

Authors:
; ;
Publication Date:
Research Org.:
Los Alamos National Lab., NM (USA)
Sponsoring Org.:
DOE/DP
OSTI Identifier:
5453395
Report Number(s):
LA-UR-89-3410; CONF-891013-6
ON: DE90002384
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: 6. symposium on separation science and technology for energy applications, Knoxville, TN (USA), 22-27 Oct 1989
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; PLUTONIUM; SEPARATION PROCESSES; ASHES; ELECTROREFINING; ENRICHMENT; GRAPHITE; MAGNETIC SUSCEPTIBILITY; OXIDES; RESIDUES; SALTS; SAND; ACTINIDES; CARBON; CHALCOGENIDES; ELECTROLYSIS; ELEMENTAL MINERALS; ELEMENTS; LYSIS; MAGNETIC PROPERTIES; METALS; MINERALS; NONMETALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; PROCESSING; REFINING; TRANSURANIUM ELEMENTS; 052001* - Nuclear Fuels- Waste Processing

Citation Formats

Avens, L.R., McFarlan, J.T., and Gallegos, U.F.. Magnetic separation as a plutonium residue enrichment process. United States: N. p., 1989. Web.
Avens, L.R., McFarlan, J.T., & Gallegos, U.F.. Magnetic separation as a plutonium residue enrichment process. United States.
Avens, L.R., McFarlan, J.T., and Gallegos, U.F.. Sun . "Magnetic separation as a plutonium residue enrichment process". United States. doi:. https://www.osti.gov/servlets/purl/5453395.
@article{osti_5453395,
title = {Magnetic separation as a plutonium residue enrichment process},
author = {Avens, L.R. and McFarlan, J.T. and Gallegos, U.F.},
abstractNote = {We have subjected several plutonium contaminated residues to Open Gradient Magnetic Separation (OGMS) on an experimental scale. Separation of graphite, bomb reduction sand, and bomb reduction sand, and bomb reduction sand, slag, and crucible, resulted in a plutonium rich fraction and a plutonium lean fraction. The lean fraction varied between about 20% to 85% of the feed bulk. The plutonium content of the lean fraction can be reduced from about 2% in the feed to the 0.1% to 0.5% range dependent on the portion of the feed rejected to this lean fraction. These values are low enough in plutonium to meet economic discard limits and be considered for direct discard. Magnetic separation of direct oxide reduction and electrorefining pyrochemical salts gave less favorable results. While a fraction very rich in plutonium could be obtained, the plutonium content of the lean fraction was to high for direct discard. This may still have chemical processing applications. OGMS experiments at low magnetic field strength on incinerator ash did give two fractions but the plutonium content of each fraction was essentially identical. Thus, no chemical processing advantage was identified for magnetic separation of this residue. The detailed results of these experiments and the implications for OGMS use in recycle plutonium processing are discussed. 4 refs., 3 figs., 9 tabs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1989},
month = {Sun Jan 01 00:00:00 EST 1989}
}

Conference:
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