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SALT PHASE CHLORINATION OF REACTOR FUELS. IV. NIOBIUM BEHAVIOR IN THE LEAD CHLORIDE AND CHLORINE-LEAD CHLORIDE SYSTEMS

Description: Investigation of the behavior of Nb in PbCl/sub 2/ showed that the Nb dissolution rate is quite low. Since stirring increases the rate appreciably, it is likely that the initial reaction is diffusion controlled. A subsequent reaction is linear in rate with an activation energy of 23.4 kcal per mole. Incomplete volatilization of dissolved Nb from PbCl/sub 2/ is due to the presence of lower oxidation states of Nb. The addition of Cl to PbCl/sub 2/ increases the rate of dissolution of Nb. The rate… more
Date: March 15, 1962
Creator: Teague, J. L.; Hahn, H. T. & Vander Wall, E. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SALT PHASE CHLORINATION OF REACTOR FUELS. III. CATALYZED DISSOLUTION OF URANIUM DIOXIDE IN LEAD CHLORIDE-CHLORIDE SYSTEMS

Description: The rapid dissolution of uranium dioxide is described, wherein copper is added to molten lead chloride at 550 deg C. and chlorine is passed through the melt. The integral dissolution of zirconium-clad uranium dioxide fuels is also described. The dissolution rate of uranium dioxide is directly proportional to the concentration of cuprous chloride if an excess of chlorine is used; the value for the rate constant is approximately 100 mg (UO/sub 2/) cm/sup -2/ min/sup -1/ (CuCl molality). The urani… more
Date: February 1, 1962
Creator: Vander Wall, E. M.; Bauer, D. L. & Hahn, H. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chlorination of Uranium and Fission Product Oxides in Molten Halide Media

Description: The chlorination of mixtures of uranium and fission product oxides in various molten halide systems by sparging with a chlorine-carbon monoxide mixture was investigated. The chlorination reaction causes the suspended oxide to form species that are soluble in the molten salt and removes some of the fission product elements by volatilization of the chlorides. The rate ot oxide dissolution and the fission product behavior both proved to be dependent upon the composition of the molten halide medium… more
Date: May 1, 1962
Creator: LaPlante, J. P.; Wenz, D. A. & Steunenberg, R. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mechanism and kinetics of mineral absorption by plants. Annual progress report, October 1, 1965-September 30, 1966

Description: Plant nutrition was studied as a relation between aerobic respiration and ion uptake in barley. Potassium, chlorine, lithium, sodium, calcium, sulfates, and bicarbonates were studied by root absorption in varying concentrations of carbon dioxide atmospheres. (PSB)
Date: January 1, 1966
Creator: Jacobson, L. & Overstreet, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Manufacturing Section semiannual summary report, period ending June 30, 1968

Description: In this sixth semiannual issue, the reactor and power data are shown for the six-month period January through June, 1968 (except for B Reactor which is shown for January and February only because of deactivation at 0200 hours on February 12, 1968), together with data for the three preceding six-month periods. For comparison purpose the two years of experience will continue to be shown by dropping and adding a six-month period with each semiannual issue.
Date: September 1, 1968
Creator: DeNeal, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The High-Temperature Chemistry of Fission-Product Elements. Summary Report, August 1, 1960-July 31, 1961

Description: A report is presented in which work on the hightemperature chemistry of the Cl--Rh systenm, the Cl--Os system, the Cl--Ru system, and the Cl--Pd is summarized. Other work is described on diffusion and kinetic effects in the transpiration method, and the chemistry of transition metal chlorides. (J.R.D.)
Date: August 29, 1961
Creator: Merten, U.; Bell, W. E. & Hale, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical Processing Technology Quarterly Progress Report, April-June 1961

Description: The Idaho Chemical Processing Plant did not operate on fuel recovery during this period, due to extensive renovation and modiflcation of facilities. Potasslum fluoride was found to be an undesirable additive to the barium precipitating agent used in formation of barium fluozirconate, because of precipitation and loss of uranium, although essentially complete precipitation of zirconium was achieved. Addition of hydrofluoric acid with barium precipitant, to achieve a fluoride/zirconium mole ratio… more
Date: November 10, 1961
Creator: Bower, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Idaho Chemical Processing Plant Technical Progress Report for January- March 1960

Description: 9 > ? ( ing schedule included MTR, ETR, and other aluminum-type fuels that were processed through the TBP headend at 75 to 100% of flowsheet rates and through the Hexone second and third cycle extraction system at up to l5O% of flowsheet values, achieving an over-all recovery of 99.60%. In carrying out basic studies on aqueous zirconium processing, results obtained during the potentiometric titration of zirconium-fluoride-nitric acid solutions with sodium hydroxide were explained by a mechanism… more
Date: July 13, 1960
Creator: Slansky, C.M.; Warzel, F.M. & Bower, J.R. Jr. ed.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effect of Cl$sup -$ and So$sub 4$$sup -2$ on the Paramagnetic Resonance Line Width of Mn$sup +2$ in Aqueous Solution and the Rates of Formation of the Complex Ions

Description: The line width of one of the hynerfine components in solutions of Mn(ClO/ sub 4/)/sub 2/ containing added NaCl and Na/sub 2/SO/sub 4/ was studied from 20 to 200 deg C at 9000 Mc/sec. The chloride ion contributes littie broadening at 0.1 M below 80 deg C but considerable broadening is obtained above this temperature. The sulfate contributes broadening at all temperatures. The rates of formation of inner-sphere'' and outersphere'' complexes are discussed together with their rates of relaxation. A… more
Date: September 23, 1963
Creator: Hayes, R. G. & Myers, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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THE VAPOR PRESSURES OF 30 INORGANIC LIQUIDS BETWEEN ONE ATMOSPHERE AND THE CRITICAL POINT

Description: Literature values of the vapor pressures of H/sub 2/, HD, D/sub 2/, N/ sub 2/, O/sub 2/, Ne, Ar, Kr, Xe, CO, NO, CH/sub 4/, N/sub 2/O, CO/sub 2/, HCl HBr, HI, SF/sub 6/, H/sub 2/S, Cl/sub 2/, Br/sub 2/, NH/sub 3/, C/sub 2/H/sub 2/ , SO/sub 2/, SO/sub 3/, COCl/sub 2/, HF, HCN, N/sub 2/O/sub 4/, CCl/sub 4/, and SnCl/sub 4/ were compared with the Kirchhoff formula log PK = --A/T + B between the normal boiling point and the critical point, where A and B are determined for each liquid. Plots are pre… more
Date: June 13, 1963
Creator: Edwards, D.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CHEMICAL ENGINEERING DIVISION SUMMARY REPORT, JANUARY, FEBRUARY, MARCH 1961

Description: 8 7 < 6 ; : : = 8 g developed for recovering fissionable and fertile materials from shortcooled reactor fuels. The second laboratory demonstration of the melt-refining process with highly irradiated EBR- IItype fuel pins was completed. A 392-g charge of U-5% fissium fuel pins irradiated to an estimated burnup of 0.4 total at.% and cooled 28 days was melt refined for three hours at 1400 deg C. Data were not obtained on the behavior of fission products. The effect of N concentration on the nitrid… more
Date: October 31, 1961
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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THE REMOVAL OF URANIUM AND THORIUM FROM FUELED-GRAPHITE MATERIALS BY CHLORINATION

Description: A nondestructive process was developed for the removal of exposed uranium and thorium from fueled-graphite spheres for gas-cooled pebble-bed reactors. Volatile chlorides were formed and removed by reacting exposed uranium and thorium at high temperature with a dynamic atmosphere of gaseous chlorine diluted with argon. Chlorination experiments were conducted at 800 to 1000 deg C with uncoated spherical UC/sub 2/ and (U,Th)C/sub 2/ particles, pyrolytic-carbon coated fuel particles, and graphite m… more
Date: April 1, 1964
Creator: Cook, J.L. & Hamner, R.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis of Current Distribution in Electrolytic Cells With Flowing Mercury Cathodes

Description: An idealized model is postulated embodying the essential features of industrial caustic-chlorine cells with horizontal flowing-mercury cathodes. This model is examined in detail, and relations expressing the local anode potential, cathode potential, and ohmic potential drop in the electrolyte in terms of local current density and other parameters are established. These relations are combined to give a system of equations relating current density at any location along the cell to applied total p… more
Date: July 19, 1960
Creator: Grens, E. A., II
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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REACTIONS OF MOLYBDENUM, TUNGSTEN AND URANIUM HEXAFLUORIDES WITH NITROGEN COMPOUNDS. III. NITROGEN DIOXIDE AND NITROGEN OXYHALIDES

Description: Reaction between gaseous nitrogen dioxide and gaseous uranium hexafluoride results in the formation of the nitrylium salt NO/sub 2/UF/sub 6/. Under similar conditions no reaction occurs between nitrogen dioxide and molybdenum and tungsten hexafluorides. Reaction between nitrosyl and nitryl fluorides and the three hexafluorides results in solid compounds of the composition NO/sub x/F x MF/sub 6/, where x is 1 or 2 and M represents Mo, W, or U. Reaction between gaseous or liquid nitrosyl chloride… more
Date: January 27, 1961
Creator: Geichman, J. R.; Ogle, P. R. & Swaney, L. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preliminary Evaluation of Chlorine for Use as a Gas Cooled Reactor Safeguard

Description: An evaluation of chlorine in a high-temperature gascooled graphite- moderated reactor as a safeguard to control u runawav oxidation reaction was made. Experiments were performed which demonstrated the ability of a small amount of chlorine in an air stream to reduce the oxidation rate of graphite. Chlorine appeared to inhibit graphite oxidation by blocking active sites on the surface. On the basis of this mechanism, a rate law was derived which was consistent with observed behavior. (C.J.G.)
Date: March 1, 1960
Creator: Dahl, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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