Chemical Techinology Division, Unit Operations Section Monthly Progress Report, April 1960

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Experiments showed that 30% tributyl phosphate will not extract acid- deficient species of uranyl nitrate. Flooding throughputs for the Mark I stacked- clone contactor ranged from 600 cc/min organic at zero aqueous to 60 cc/min organic at 1950 cc aqueous. A large electronic vibrator of 5000-lb thrust was found somewhat inferior to pneumatic vibration for compacting oxide fuels into stainless-steel tubes. Tests were started on the use of fixed-bed CuO oxidizers for removing hydrogen contamination from helium gas streams. None of the variables studied within this period effected an increase in particle size in the denitration of thorium nitrate to … continued below

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81 pages

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Whatley, M E; Haas, P A; Horton, R W; Ryon, A D; Suddath, J C & Watson, C D July 28, 1960.

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Experiments showed that 30% tributyl phosphate will not extract acid- deficient species of uranyl nitrate. Flooding throughputs for the Mark I stacked- clone contactor ranged from 600 cc/min organic at zero aqueous to 60 cc/min organic at 1950 cc aqueous. A large electronic vibrator of 5000-lb thrust was found somewhat inferior to pneumatic vibration for compacting oxide fuels into stainless-steel tubes. Tests were started on the use of fixed-bed CuO oxidizers for removing hydrogen contamination from helium gas streams. None of the variables studied within this period effected an increase in particle size in the denitration of thorium nitrate to produce ThO/sub 2/. The rate of uranyl sulfate loading on nitrate equilibrated Dowex 21K appears to be essentially independent of the loading solution sulfate concentration. The nitric acid concentrations corresponding to maximum UO/sub 2/-ThO/sub 2/ pellet dissolution rate were 15.5 M for Thorex solution and 13 M for the adjusted Darex solution. Two additional Semicontinuous Sulfex declad and Thorex core dissolutions of prototype Consolidated Edison fuel assemblies were made to complete the series of runs. The effective area of cylindrical UO/sub 2/ pellets dissolving in nitric acid was estimated from experimental rate measurements as a function of the fraction dissolved. A prototype SRE fuel rod was hydraulically expanded about 45 mils at 1300-psig pressure. Flooding capacities were determined for the compound extraction scrub columns with the acid Thorex flowsheet. A controlled cold-bath was installed for the condensation pressure analyzer to be used for UF/sub 6/ stream analysis. Tracer studies with the 8-in.-diameter by 84-in.high waste calcination vessel showed the solid deposition pattern to be a radial growth from the side wall and a vertical growth from the bottom. (For preceding period see ORNL CF-60-3-61.) (auth)

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81 pages

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Other Information: Orig. Receipt Date: 31-DEC-61

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  • July 28, 1960

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  • Sept. 16, 2016, 12:32 a.m.

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Whatley, M E; Haas, P A; Horton, R W; Ryon, A D; Suddath, J C & Watson, C D. Chemical Techinology Division, Unit Operations Section Monthly Progress Report, April 1960, report, July 28, 1960; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc872359/: accessed May 9, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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