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PROCESSES FOR RECOVERY OF URANIUM AND THORIUM FROM GRAPHITE-BASE FUEL ELEMENTS. PART II

机译：从石墨基燃料元件中回收铀和钍的工艺。第二部分

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Laboratory-scale tests on methods for recovering uranium and thorium from graphite-base reactor fuel elements are reported. The 90% HNO3 process, which involves simultaneous disintegration and leaching in 21 M HNO3, is applicable to all fuel elements which do not contain coated fuel particles. Leaching of irradiated (0.001% burnup) fuels containing 3 and 12% uranium recovered ~99.3 and 99.9%, respectively, of the uranium in two 4-hr leaches with boiling acid. The graphite residue retained >50$ of the long-lived fission products. Three successive leaches of fuel containing uranium and thorium recovered ~99% of both elements. Uranium recoveries by combustion in oxygen followed by dissolution of the ash in nitric acid or fluoride-catalyzed nitric acid are quantitative only when the fuel is not coated, does not contain A2O3-coated fuel particles, and is free from impurities such as iron.

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L. M. Ferris; A. H. Kibbey; M. J. Bradley;
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年度 1961
页码 1-39
总页数 39
原文格式 PDF
正文语种 eng
中图分类工业技术;
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2. BURN UP STUDY OF AN INNOVATIVE NATURAL URANIUM-THORIUM FUELED REPROCESSING FREE FUSION-FISSION HYBRID REACTOR BLANKET WITH CLOSED THORIUM-URANIUM FUEL CYCLE [J] . Xiao S. C., Zhao Jing, Heng X., Fusion Science and Technology . 2015,第3期

机译：封闭的-铀燃料循环的天然铀-HOR混合型自由融合-裂变混合反应器坯料的Burn-up研究
3. Precipitation of Thorium or Uranium(VI) Complex Ion with Cobalt(III) or Chromium(III) Complex Cation, (II)Precipitation of Thorium and Uranium(VI) Sulfito Complex Ions [J] . Michio HOSHI, Kaoru UENO Journal of nuclear science and technology . 1978,第2期

机译：带有钴（III）或铬（III）络合物阳离子的Thor或铀（VI）络合离子的沉淀，（II）ulf和铀（VI）磺化络合物离子的沉淀
4. Impact of thorium-enrichment on the PWR core-characteristics of Plutonium-Thorium Mixed Oxide fuels and Uranium Oxide fuels [C] . Kazumasa Kobayashi, Ren Shimada, Satoshi Takeda, International Congress on Advances in Nuclear Power Plants . 2017

机译：钍富集对钚 - 钍混合氧化物燃料和氧化铀燃料的PWR核心特性的影响
5. PART I: SEPARATION BY CATION EXCHANGE OF THORIUM, ZIRCONIUM, IRON AND URANIUM. PART II. ION EXCHANGE EQUILIBRIUM STUDIES FOR URANIUM(IV), THORIUM AND CADMIUM AND CHROMATOGRAMS FOR URANIUM(VI). [D] . SAMEDY, SAIF R. 1958

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6. Quantitative in vivo phosphoproteomics reveals reversible signaling processes during nitrogen starvation and recovery in the biofuel model organism Chlamydomonas reinhardtii [O] . Valentin Roustan, Shiva Bakhtiari, Pierre-Jean Roustan, 2017

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7. A NUMERICAL STUDY OF EXCURSIONS IN UHTREX LOADED WITH URANIUM--THORIUM FUEL ELEMENTS. [O] . G. C. Hopkins 1968

机译：用铀 - 钍燃料元件装载UHTREX雷短雷击的数值研究。

PROCESSES FOR RECOVERY OF URANIUM AND THORIUM FROM GRAPHITE-BASE FUEL ELEMENTS. PART II

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