CALCIUM URANIUM(IV) FLUORIDE PRECIPITATION AND REDUCTION TO METAL

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The double salt calcium uranium(IV) fluoride can be precipitated from uranyl nitrate solution. In the presence of fluoride and calcium ions, ferrous salts will reduce uranium(VI) nitrate to the four state precipitating calcium uranium(IV) fluoride. X-ray studies showed that the compound is a true double salt. The salt can be dehydrated under argon at 250 deg C and reduced to metal by the bomb technique. Reduction yields are high, but co-precipitated iron in the salt is concentrated in the uranium button, resulting in iron impurities of approximately 0.6%. The double salt is a suitable feed for fused salt electrolysis. Electrolyzing ... continued below

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14 p.

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Tolley, W. B. March 17, 1955.

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  • Hanford Atomic Products Operation
    Publisher Info: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
    Place of Publication: Richland, Washington

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Description

The double salt calcium uranium(IV) fluoride can be precipitated from uranyl nitrate solution. In the presence of fluoride and calcium ions, ferrous salts will reduce uranium(VI) nitrate to the four state precipitating calcium uranium(IV) fluoride. X-ray studies showed that the compound is a true double salt. The salt can be dehydrated under argon at 250 deg C and reduced to metal by the bomb technique. Reduction yields are high, but co-precipitated iron in the salt is concentrated in the uranium button, resulting in iron impurities of approximately 0.6%. The double salt is a suitable feed for fused salt electrolysis. Electrolyzing from a solution of 30% double salt dissolved in LiC1- KC1 eutectic dendritic uranium was recovered with a current efficiency of 35%. Iron impurity in the electrolyztically prepared uranium was reduced from an expected concentration of 5700 ppm to an actual concentration of 250 ppm. (auth)

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14 p.

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NTIS

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  • Other Information: Decl. Jan. 12, 1960. Orig. Receipt Date: 31-DEC-60

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  • Report No.: HW-35815
  • Grant Number: W-31-109-ENG-52
  • Office of Scientific & Technical Information Report Number: 4187941
  • Archival Resource Key: ark:/67531/metadc874857

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Office of Scientific & Technical Information Technical Reports

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  • March 17, 1955

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  • Sept. 21, 2016, 2:29 a.m.

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  • Oct. 11, 2017, 3:43 p.m.

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Tolley, W. B. CALCIUM URANIUM(IV) FLUORIDE PRECIPITATION AND REDUCTION TO METAL, report, March 17, 1955; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc874857/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.