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Process to remove rare earth from IFR electrolyte (open access)

Process to remove rare earth from IFR electrolyte

The invention is a process for the removal of rare earths from molten chloride electrolyte salts used in the reprocessing of integrated fast reactor fuel (IFR). The process can be used either continuously during normal operation of the electrorefiner or as a batch process. The process consists of first separating the actinide values from the salt before purification by removal of the rare earths. After replacement of the actinides removed in the first step, the now-purified salt electrolyte has the same uranium and plutonium concentration and ratio as when the salt was removed from the electrorefiner.
Date: January 1, 1992
Creator: Ackerman, J. P. & Johnson, T. R.
System: The UNT Digital Library
Integrated null-flux suspension and multiphase propulsion system for magnetically-levitated vehicles (open access)

Integrated null-flux suspension and multiphase propulsion system for magnetically-levitated vehicles

This report discusses a propulsion and stabilization system comprising a series of figure 8 coils mounted vertically on the walls of the guideway to provide suspension, lateral guidance and propulsion of a magnetically levitated vehicle. This system further allows for altering the magnetic field effects by changing the relative position of the loops comprising the figure 8 coils either longitudinally and/or vertically with resulting changes in the propulsion, the vertical stability, and the suspension.
Date: January 1, 1992
Creator: Rote, D. M.; He, Jianliang & Johnson, L. R.
System: The UNT Digital Library
Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste (open access)

Method to synthesize dense crystallized sodalite pellet for immobilizing halide salt radioactive waste

This report describes a method for immobilizing waste chloride salts containing radionuclides such as cesium and strontium and hazardous materials such as barium. A sodalite intermediate is prepared by mixing appropriate amounts of silica, alumina and sodium hydroxide with respect to sodalite and heating the mixture to form the sodalite intermediate and water. Heating is continued to drive off the water to form a water-free intermediate. The water-free intermediate is mixed with either waste salt or waste salt which has been contacted with zeolite to concentrate the radionuclides and hazardous material. The waste salt-intermediate mixture is then compacted and heated under conditions of heat and pressure to form sodalite with the waste salt, radionuclides and hazardous material trapped within the sodalite cage structure. This provides a final product having excellent leach resistant capabilities.
Date: January 1, 1992
Creator: Koyama, T.
System: The UNT Digital Library
Improved high speed maglev design (open access)

Improved high speed maglev design

This report discusses a propulsion and stabilization system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes dividing the superconducting magnets into two types: a strong field magnet which is located vertically below the vehicle for propulsion and guidance and a weak field superconducting magnet located at the ends of the vehicle for levitation and added guidance. Several proposed embodiments exist for the placement of the magnetic field shielding: locating the shielding on the vehicle, locating the shielding on the guideway, and locating the shielding on the guideway and adding shielding to the vertical undercarriage. In addition, the separation between the be vehicle and the guideway can be controlled to reduce the exposure of the passenger cabin to magnetic fields.
Date: January 1, 1992
Creator: Rote, D. M.; He, Jianliang & Coffey, H. T.
System: The UNT Digital Library