Chemical Processing Department Monthly Report: July 1957 Page: 88 of 107
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
Research and Engineering NW- 5J.802 -"
Work was continued on the fabrication of aluminum buttons for testing the
guillotine button cutter. After preliminary work, aluminum castings were
made in copper molds fabricated jointly with 23h-5 Maintenance. An oversize
aluminum button, about 1-1/8 inches thick, was successfully cut. It cracked
into two parts upon application of about 20 tons to the cutter blade.
Continuous Task I
Two continuous plutonium oxalate precipitations were made in the Task I proto-
type, using Redox feed. The filtrate from both runs was continuously killed
with permanganate at 45 C in the laboratory prototype unit. The permanganate
leg worked satisfactorily, but reaction in the peroxide leg was too violent
when 10 percent peroxide was used. Even 2-1/2 percent peroxide reacted vigor-
ously and continuous operation could be maintained only by operating with the
peroxide addition just a few inches below the takeoff line. The production
unit may not encounter this trouble since it has a much larger cross section
(four-inch diameter) than the laboratory unit (one-inch diameter).
Reduction of Plutonium Trifluoride
Nine-hundred grams of off-standard (colorwise) blue plutonium fluoride was
received from process.. This was split into two equal batches and reduced in
magnesia and calcium fluoride crucibles. Yields of 98 percent were obtained
on each button, assuming the powder to be the plus three fluoride. ieldb would
be 104 percent if the powder were assumed to be the plus four fluoride. The
mole ratio of I2/Pu was 0.8. An excess of 0.6 calcium was used. Buttons were
well formed. Metallic impurities totaled <h54 ppm and<550 ppm in the f-rst and
second reductions respectively.
The above reductions indicate that the poor reduction yields obtained in the
reduction of wet precipitated fluorides were probably due to oxide formation
on the surface of the powders.
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Hanford Atomic Products Operation. Chemical Processing Department. Chemical Processing Department Monthly Report: July 1957, report, August 22, 1957; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1312193/m1/88/: accessed May 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.