Results 211 to 220 of about 1,331 (240)
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Natural Thorium Resources and Recovery: Options and Impacts
Nuclear Technology, 2016This paper reviews the front end of the thorium fuel cycle, including the extent and variety of thorium deposits, the potential sources of thorium production, and the physical and chemical technolo...
Timothy Ault +3 more
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The recovery of thorium-230 from uranium wastes
Journal of Inorganic and Nuclear Chemistry, 1957Abstract A solvent extraction with dibutyl carbitol and tributyl phosphate (TBP) cycles has been used to recover thorium with a 230 Th content of 12 per cent from a solid hydroxide waste, containing 6 p.p.m. 230 Th, which has arisen from the extraction of uranium from pitchblende. A process consisting of successive counter-current extraction cycles
D.J. Carswell +2 more
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Nuclear Technology, 2015
A long-standing concern about the future implementation of thorium fuel cycles has been the availability of a thorium fuel cycle infrastructure, including thorium mineral recovery.
Timothy Ault, Steven Krahn, Allen Croff
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A long-standing concern about the future implementation of thorium fuel cycles has been the availability of a thorium fuel cycle infrastructure, including thorium mineral recovery.
Timothy Ault, Steven Krahn, Allen Croff
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Recovery of thorium from sulphate solutions by anion exchange
Journal of Applied Chemistry, 1959AbstractThe passage of solutions containing uranyl and thorium sulphate through columns of De‐Acidite FF strongly basic anion‐exchange resin results in the initial absorption of both metals as complex anions, followed by the qualitative displacement of thorium by uranium.
T. V. Arden +3 more
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Recovery of thorium from uranium solutions
JOM, 1966At Elliot Lake, Ontario, thorium has been recovered from uranium ore leach solutions, after removal of the uranium by ion exchange resin, since 1959. A solvent extraction process is used, and the thorium is recovered as thorium sulfate by stripping the loaded solvent with moderately strong sulfuric acid.
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Recovery of Thorium(IV) and Radium(II) from Chloride Solutions
Russian Journal of Applied Chemistry, 2005Recovery of thorium(IV) and radium(II) by precipitation methods in the chloride technology of perovskite processing was studied.
V. G. Maiorov +5 more
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Journal of Radioanalytical and Nuclear Chemistry, 2003
A method is developed for the selective leaching of 233U from a thorium oxalate cake. The leaching capacity of ammonium carbonate and nitric acid have been investigated, showing that (NH4)2CO3 leads to higher recovery. The maximum leaching efficiency is obtained using 0.5% ammonium carbonate, with a minimal thorium pick-up. A uranium recovery of 94% is
P. Govindan +6 more
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A method is developed for the selective leaching of 233U from a thorium oxalate cake. The leaching capacity of ammonium carbonate and nitric acid have been investigated, showing that (NH4)2CO3 leads to higher recovery. The maximum leaching efficiency is obtained using 0.5% ammonium carbonate, with a minimal thorium pick-up. A uranium recovery of 94% is
P. Govindan +6 more
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Recovery of Protactinium from Irradiated Thorium Nitrate by Solvent Extraction
Радиохимия / RadiochemistryRecovery of protactinium from irradiated thorium nitrate by solvent extraction is studied in relation to the blanket conditions of a fusion neutron source (FNS) using -octanol and diisobutylcarbinol (DIBC) as extractants. The degree of extraction of Pa from a solution of irradiated thorium nitrate (600 g/dm) in 3 M nitric acid in one contact exceeded ...
M. L. Khokhlov +10 more
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Recovery of Uranium, Thorium and Cerium from Egyptian monazite sands. I
Zeitschrift für anorganische und allgemeine Chemie, 1970AbstractA process is described for the recovery of uranium, thorium and cerium from Egyptian monazite sands. The process consisted of: 1. Treatment of fine ground monazite sands with hot 50% caustic soda solution with a caustic soda to monazite sand ratio of 1:1. 2.
F. A. Saleh, A. K. Farag
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Immobilization and Recovery of Thorium, A Neptunium Surrogate, using Phase-Separated Glasses
MRS Proceedings, 1996ABSTRACTThe Savannah River Site has the majority of the United States' supply of neptunium currently stored in an acid solution in one of their canyon facilities. A program is being developed that could be utilized to ship this material, as glass, to Oak Ridge National Laboratory ...
T. F. Meaker +4 more
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