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Title: Plutonium metal preparation and purification at Los Alamos, 1984

Abstract

Plutonium metal preparation and purification are well established at Los Alamos. Metal is prepared by calcothermic reduction of both PuF/sub 4/ and PuO/sub 2/. Metal is purified by halide slagging, casting, and electrorefining. The product from the production sequence is ultrapure plutonium metal. All of the processes involve high temperature operation and all but casting involve molten salt media. Development efforts are fourfold: (1) recover plutonium values from residues; (2) reduce residue generation through process improvements and changes; (3) recycle of reagents, and (4) optimize and integrate all processes into a close-loop system. Plutonium residues are comprised of oxides, chlorides, colloidal metal suspensions, and impure metal heels. Pyrochemical recovery techniques are under development to address each residue. In addition, we are looking back at each residue generation step and are making process changes to reduce plutonium content in each residue. Reagent salt is the principle media used in pyrochemical processing. The regeneration and recycle of these reagents will both reduce our waste handling and operating expense. The fourth area, process optimization, involves both existing processes and new process developments. A status of efforts in all four of these areas will be summarized.

Authors:
; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
5702096
Report Number(s):
LA-UR-85-1471; CONF-841235-1
ON: DE85010732
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: International symposium on lanthanide-actinide separations, Honolulu, HI, USA, 16 Dec 1984
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PLUTONIUM; CHEMICAL PREPARATION; PURIFICATION; PLUTONIUM DIOXIDE; RESIDUES; ACTINIDE COMPOUNDS; ACTINIDES; CHALCOGENIDES; ELEMENTS; METALS; OXIDES; OXYGEN COMPOUNDS; PLUTONIUM COMPOUNDS; PLUTONIUM OXIDES; SYNTHESIS; TRANSURANIUM COMPOUNDS; TRANSURANIUM ELEMENTS; 360101* - Metals & Alloys- Preparation & Fabrication

Citation Formats

Christensen, D C, Williams, J D, McNeese, J A, and Fife, K W. Plutonium metal preparation and purification at Los Alamos, 1984. United States: N. p., 1984. Web.
Christensen, D C, Williams, J D, McNeese, J A, & Fife, K W. Plutonium metal preparation and purification at Los Alamos, 1984. United States.
Christensen, D C, Williams, J D, McNeese, J A, and Fife, K W. 1984. "Plutonium metal preparation and purification at Los Alamos, 1984". United States. https://www.osti.gov/servlets/purl/5702096.
@article{osti_5702096,
title = {Plutonium metal preparation and purification at Los Alamos, 1984},
author = {Christensen, D C and Williams, J D and McNeese, J A and Fife, K W},
abstractNote = {Plutonium metal preparation and purification are well established at Los Alamos. Metal is prepared by calcothermic reduction of both PuF/sub 4/ and PuO/sub 2/. Metal is purified by halide slagging, casting, and electrorefining. The product from the production sequence is ultrapure plutonium metal. All of the processes involve high temperature operation and all but casting involve molten salt media. Development efforts are fourfold: (1) recover plutonium values from residues; (2) reduce residue generation through process improvements and changes; (3) recycle of reagents, and (4) optimize and integrate all processes into a close-loop system. Plutonium residues are comprised of oxides, chlorides, colloidal metal suspensions, and impure metal heels. Pyrochemical recovery techniques are under development to address each residue. In addition, we are looking back at each residue generation step and are making process changes to reduce plutonium content in each residue. Reagent salt is the principle media used in pyrochemical processing. The regeneration and recycle of these reagents will both reduce our waste handling and operating expense. The fourth area, process optimization, involves both existing processes and new process developments. A status of efforts in all four of these areas will be summarized.},
doi = {},
url = {https://www.osti.gov/biblio/5702096}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Conference:
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