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Denitrated uranium trioxide hydration and activation technology

A technology of uranium trioxide and denitrification, which is applied in the field of uranium conversion, can solve problems such as unapplied examples and complicated process, and achieve the effect of simple equipment, simple system structure and feasible process route

Active Publication Date: 2014-07-09
THE 404 COMPANY LIMITED CHINA NAT NUCLEAR
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  • Abstract
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Problems solved by technology

However, the oxidation-reduction method requires the UO 3 Revert to UO 2 , and then re-oxidized to U 3 o 8 , the process is more complicated, and there are no examples of application in industry

Method used

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  • Denitrated uranium trioxide hydration and activation technology
  • Denitrated uranium trioxide hydration and activation technology
  • Denitrated uranium trioxide hydration and activation technology

Examples

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] The principle of the present invention is: denitrification UO 3 Under certain conditions, react with water to form UO 3 2H 2 O, UO 3 2H 2 O can form amorphous UO after drying-dehydration 3 . According to this feature, the present invention uses the horizontal stirred bed as the hydration reactor, by controlling the flow of atomized water, UO 3The input amount and the temperature of the reactor, the hydration reaction is carried out in the reactor to generate UO 3 2H 2 O, then to UO 3 2H 2 O, for drying-dehydration, the drying dehydrator also adopts the horizontal stirring bed method, which is realized by controlling the temperature.

[0028] A denitration uranium trioxide hydration activation process, such as figure 1 shown, including the following steps:

[0029] Step 1, build the hydration activation test platform: the test system f...

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Abstract

The invention relates to the technical field of uranium conversion, and concretely relates to a technology for improving the activity of uranium trioxide by reacting deionized water with denitrated uranium trioxide to generate a uranium trioxide dihydrate compound, and drying-dehydrating to prepare amorphous uranium trioxide. The technology has the advantages of simplicity and stable and reliable running of equipment, simple flow and practical process route, an activated UO3 material can be directly used in the fluidized bed reduction preparation process of UO2, and prepared UO2 has a high hydrofluorination activity.

Description

technical field [0001] The invention relates to the technical field of uranium conversion, in particular to a method in the field of uranium conversion which utilizes deionization and denitrification uranium trioxide to react to form uranium trioxide dihydrate, and then prepares amorphous uranium trioxide through drying and dehydration, so as to increase the concentration of uranium trioxide active craft. Background technique [0002] At present, the uranium conversion production from uranium ore concentrate (yellow cake) to UF6 in my country now uses AUC cracking and reduction to produce UO 2 , and then prepare UF by two-stage serial countercurrent fluidized bed hydrofluorination 4 , and then fluorinated in a novel fluorination reactor to prepare UF 6 route. The production capacity of the front-end equipment of this process is small, the amount of waste liquid and gas is large, and the impact on the environment is relatively serious, which is inconsistent with the develo...

Claims

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Application Information

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IPC IPC(8): C01G43/01
Inventor 魏刚王伟王俊张慧忠李永明严辉许云生张龙
Owner THE 404 COMPANY LIMITED CHINA NAT NUCLEAR
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