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Title: Method for cleaning bomb-reduced uranium derbies

Abstract

The concentration of carbon in uranium metal ingots induction cast from derbies prepared by the bomb-reduction of uranium tetrafluoride in the presence of magnesium is effectively reduced to less than 100 ppm by removing residual magnesium fluoride from the surface of the derbies prior to casting. This magnesium fluoride is removed from the derbies by immersing them in an alkali metal salt bath which reacts with and decomposes the magnesium fluoride. A water quenching operation followed by a warm nitric acid bath and a water rinse removes the residual salt and reaction products from the derbies.

Inventors:
 [1];  [2];  [3];  [3]
  1. (Boulder, CO)
  2. (Oak Ridge, TN)
  3. (Knoxville, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
863803
Patent Number(s):
4252564
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; cleaning; bomb-reduced; uranium; derbies; concentration; carbon; metal; ingots; induction; cast; prepared; bomb-reduction; tetrafluoride; presence; magnesium; effectively; reduced; 100; ppm; removing; residual; fluoride; surface; prior; casting; removed; immersing; alkali; salt; bath; reacts; decomposes; water; quenching; operation; followed; warm; nitric; acid; rinse; removes; reaction; products; uranium tetrafluoride; magnesium fluoride; salt bath; nitric acid; alkali metal; metal salt; reaction product; reaction products; uranium metal; removing residual; metal ingot; reduced uranium; effectively reduced; /75/

Citation Formats

Banker, John G., Wigginton, Hubert L., Beck, David E., and Holcombe, Cressie E. Method for cleaning bomb-reduced uranium derbies. United States: N. p., 1981. Web.
Banker, John G., Wigginton, Hubert L., Beck, David E., & Holcombe, Cressie E. Method for cleaning bomb-reduced uranium derbies. United States.
Banker, John G., Wigginton, Hubert L., Beck, David E., and Holcombe, Cressie E. Thu . "Method for cleaning bomb-reduced uranium derbies". United States. https://www.osti.gov/servlets/purl/863803.
@article{osti_863803,
title = {Method for cleaning bomb-reduced uranium derbies},
author = {Banker, John G. and Wigginton, Hubert L. and Beck, David E. and Holcombe, Cressie E.},
abstractNote = {The concentration of carbon in uranium metal ingots induction cast from derbies prepared by the bomb-reduction of uranium tetrafluoride in the presence of magnesium is effectively reduced to less than 100 ppm by removing residual magnesium fluoride from the surface of the derbies prior to casting. This magnesium fluoride is removed from the derbies by immersing them in an alkali metal salt bath which reacts with and decomposes the magnesium fluoride. A water quenching operation followed by a warm nitric acid bath and a water rinse removes the residual salt and reaction products from the derbies.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

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