Unirradiated Fuel Element Processing For Recovery Of Uranium Of Various Isotopic Values PDF Download
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Author | : Gareth John Morgan |
Publisher | : |
Total Pages | : 14 |
Release | : 1970 |
Genre | : Nuclear fuel elements |
ISBN | : |
Download Unirradiated Fuel Element Processing for Recovery of Uranium of Various Isotopic Values Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 698 |
Release | : 1975-11 |
Genre | : Nuclear energy |
ISBN | : |
Download Nuclear Science Abstracts Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 12 |
Release | : 1964 |
Genre | : |
ISBN | : |
Download Recovery of Uranium from Spent Zirconium-based Reactor Fuels in the Oak Ridge Volatility Pilot Plant Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1961 |
Genre | : Nuclear fuel |
ISBN | : |
Download A Process for the Recovery of Uranium from Nuclear Fuel Elements Using Fluid-bed Drying and Volatility Techniques Book in PDF, ePub and Kindle
A process scheme for the recovery of uranium from fuel elements has been developed. The scheme combines continuous fluid-bed drying and fluoride volatility techniques after initial dissolution of the fuel element in the appropriate aqueous system, hence the designation ADF, Aqueous Dry Fluorination Process. The application of this process to the recovery of uranium from highly enriched, low uranium-zirconium alloy plate-type fuels is described. ln the process, the feed solution is sprayed horizontally through a two-fluid nozzle and is atomized directly in the heated fluidized bed. The spray droplets are dried on the fluidized particles and form a dense coating. Excessive particle growth was limited by the use of air attrition-jets inserted directly in the bed. Aqueous hydrofluoric acid solutions containing leaves2 to 3.6 M zirconiuni, 0.007 to 0.03 M uranium, and free acid concentrations from 1 to about l0 M were successfully processed in a 6-in.-diameter Inconel fluid-bed spray dryer. Rates equivalent to about 3.l kg/hr of zirconium were achieved, 160 ml/min with the most concentrated feed solution. Experiments were successfully carried out from 240 to 450 deg C.A new design for a two-fluid nozzle was developed. Extensive work was done to identify the various zirconium fluoride compounds formed. The granular dryer product was subsequently fluorinated at temperatures to 600 deg C in fluid beds and to 700 deg C in static beds to remove the uranium as the volatile hexafluoride. About 90 to 95% uranium removal was consistently achieved near 600 deg C. The relatively low uranium recovery under these conditions is a disadvantage for the application to zirconium-base fuels. It was found necessary to resort to static beds and higher temperatures to achieve greater removal. Since the fluorine attack on nickel, the material of construction, is prohibitive at temperatures above 600 deg C, a disposable fluorinator concept for use with static beds is described. Results of corrosion studies are reported. A preliminary chemical flowsheet with a design capacity of 1l00 kg of uranium (93% enriched) annually is presented. (auth).
Author | : |
Publisher | : |
Total Pages | : 1994 |
Release | : 1970 |
Genre | : Nuclear energy |
ISBN | : |
Download Nuclear Science Abstracts Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 42 |
Release | : 1970-10-02 |
Genre | : Nuclear reactors |
ISBN | : |
Download Accessions of Unlimited Distribution Reports Book in PDF, ePub and Kindle
Author | : International Atomic Energy Agency |
Publisher | : |
Total Pages | : 120 |
Release | : 2005 |
Genre | : Business & Economics |
ISBN | : |
Download Thorium Fuel Cycle Book in PDF, ePub and Kindle
Provides a critical review of the thorium fuel cycle: potential benefits and challenges in the thorium fuel cycle, mainly based on the latest developments at the front end of the fuel cycle, applying thorium fuel cycle options, and at the back end of the thorium fuel cycle.
Author | : |
Publisher | : |
Total Pages | : 922 |
Release | : 1970 |
Genre | : Science |
ISBN | : |
Download Bibliography of Scientific and Industrial Reports Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1496 |
Release | : 1983 |
Genre | : Nuclear energy |
ISBN | : |
Download INIS Atomindeks Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 212 |
Release | : 1964 |
Genre | : Nuclear fuels |
ISBN | : |
Download Reprocessing of Irradiated Fission Reactor Fuel and Breeding Materials Book in PDF, ePub and Kindle