Plutonium Residue Recovery (PuRR) project quarterly progress report, April--June 1989

PDF Version Also Available for Download.

Description

A material-balance flowsheet for ash-heel processing has been prepared. The major process features are (1) reduction of Pu into a calcium-zinc alloy and selective electrolytic recovery of the Pu from the alloy, (2) removal of americium as a waste, (3) concentration of nontransuranic tramp elements in a zinc waste, (4) removal of oxygen and recovery of calcium by electrolysis of CaO, and (5) zinc recycle by evaporation. Based on this idealized flowsheet, the mass of solid waste is only 62% of that of the original residue. This is accomplished by recycling virtually all the reagents and discarding the oxygen as ... continued below

Physical Description

Pages: (25 p)

Creation Information

Gregg, D.W.; Hickman, R.G.; Landrum, J.H. (Lawrence Livermore National Lab., CA (USA)); Johnson, G.K.; Johnson, I.; Mulcahey, T.P. et al. October 20, 1989.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

A material-balance flowsheet for ash-heel processing has been prepared. The major process features are (1) reduction of Pu into a calcium-zinc alloy and selective electrolytic recovery of the Pu from the alloy, (2) removal of americium as a waste, (3) concentration of nontransuranic tramp elements in a zinc waste, (4) removal of oxygen and recovery of calcium by electrolysis of CaO, and (5) zinc recycle by evaporation. Based on this idealized flowsheet, the mass of solid waste is only 62% of that of the original residue. This is accomplished by recycling virtually all the reagents and discarding the oxygen as CO and CO{sub 2}. The pyrochemical recovery of Pu from incinerator ash heel from the Rocky Flats Plant was investigated. During this period, zinc-calcium alloys were used to reduce the PuC{sub 2} in the ash. Reduction of ash heel has been attempted with zinc-calcium alloys containing 2, 6, and 10 wt% calcium after the reduction. These resulted in extractions of 95%, 97%, and 99.5%, respectively, of the Pu from the salt. Following exposure of the reduction alloy to a ZnCl{sub 2}-bearing salt, the Pu was removed effectively from the alloy; however, the Pu recovered in the salt did not complete the material balance. Experiments were made to test a calcium-zinc reference electrode against a Zn-Ca-Mg-Al liquid alloy. The results agreed well with calculated potentials, and such electrodes are promising for application to process monitoring. Calculations were made that verify that most of the americium in the molten salt is present in the divalent state when distributed between liquid Pu and NaCl-KCl. The AmCl{sub 2} activity coefficient is about 10 times that of PuCl{sub 3} in the salt mixture.

Physical Description

Pages: (25 p)

Notes

NTIS, PC A03/MF A01 - OSTI; GPO Dep.

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Other: DE90006162
  • Report No.: UCID-21542-89-2
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/5107276 | External Link
  • Office of Scientific & Technical Information Report Number: 5107276
  • Archival Resource Key: ark:/67531/metadc1060059

Collections

This report is part of the following collection of related materials.

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.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • October 20, 1989

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

Description Last Updated

  • April 27, 2018, 11:51 a.m.

Usage Statistics

When was this report last used?

Congratulations! It looks like you are the first person to view this item online.

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Gregg, D.W.; Hickman, R.G.; Landrum, J.H. (Lawrence Livermore National Lab., CA (USA)); Johnson, G.K.; Johnson, I.; Mulcahey, T.P. et al. Plutonium Residue Recovery (PuRR) project quarterly progress report, April--June 1989, report, October 20, 1989; California. (digital.library.unt.edu/ark:/67531/metadc1060059/: accessed December 9, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.