Plutonium metal preparation and purification at Los Alamos, 1984

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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, ... continued below

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Pages: 30

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Christensen, D.C.; Williams, J.D.; McNeese, J.A. & Fife, K.W. January 1, 1984.

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Description

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.

Physical Description

Pages: 30

Notes

NTIS, PC A03/MF A01.

Source

  • International symposium on lanthanide-actinide separations, Honolulu, HI, USA, 16 Dec 1984

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  • Other: DE85010732
  • Report No.: LA-UR-85-1471
  • Report No.: CONF-841235-1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5702096
  • Archival Resource Key: ark:/67531/metadc1092638

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1984

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • May 25, 2018, 4:50 p.m.

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Christensen, D.C.; Williams, J.D.; McNeese, J.A. & Fife, K.W. Plutonium metal preparation and purification at Los Alamos, 1984, article, January 1, 1984; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1092638/: accessed December 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.