Title:
【発明の名称】ジルコニウムとウラン又はプルトニウムのごとき1種類以上の別の金属と共に有機溶媒中に存在するテクネチウムを分離すべく、特に照射済核燃料の再処理に使用し得る方法
Document Type and Number:
Japanese Patent JPH0672946
Kind Code:
B2
Abstract:
Process for separating off the technetium present in an organic solvent in the first stage of treatment of irradiated nuclear fuels. In the reprocessing plant the solvent leaving the extractor 1 contains uranium, plutonium, zirconium and technetium; the zirconium is separated therefrom in the extractor (2) and then the technetium in the extractor (3) by being brought into contact with a solution of nitric acid and/or of nitrates which is preferably introduced at different concentrations at (19) and at (21). The solvent leaving the extractor (3) then contains only traces of technetium. The aqueous solution leaving the extractor (3) is treated in an extractor (4) with an organic solvent in order to re-extract into it the uranium and plutonium which have been transferred into aqueous solution. The technetium can thus be removed successfully before the uranium/plutonium partition operation is carried out, without introducing new chemical reactants and without greatly increasing the volume of the effluents leaving the plant.
Inventors:
Bernard buoy
Jiyang-Paul Ge
Claude Bernard
Jiyang-Paul Ge
Claude Bernard
Application Number:
JP30549787A
Publication Date:
September 14, 1994
Filing Date:
December 02, 1987
Export Citation:
Assignee:
Komisariya a Renergi Atomik
Se JN-Societe Generale Pool Les Technik Nouvelles
Se JN-Societe Generale Pool Les Technik Nouvelles
International Classes:
C01G56/00; C01G99/00; C22B34/14; C22B60/02; C22B60/04; C22B61/00; G21C19/46; (IPC1-7): G21C19/46
Attorney, Agent or Firm:
Yoshio Kawaguchi (2 outside)
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