Wet process integrated device utilizing sol-gel method to prepare uranium dioxide cores

Abstract

The invention belongs to the technical field of nuclear material processing, and discloses a wet process integrated device utilizing a sol-gel method to prepare uranium dioxide cores. The wet process integrated device utilizing the sol-gel method to prepare the uranium dioxide cores comprises a dissolving tank, a glue boiling tank, a pressure tank, a vibration dispersing system and a dispersing injection system, wherein the dissolving tank, the glue boiling tank, the pressure tank and the vibration dispersing system are sequentially communicated through a first pipeline which is provided with valves. The outlet of the vibration dispersing system is connected with the inlet of the dispersing injection system in sealed mode, and pumps are installed on the dissolving tank, the glue boiling tank and a part of the first pipeline, wherein the part of the first pipeline is communicated between the glue boiling tank and the pressure tank. By means of the fact that a continuous sealed production line is formed among all units of the wet process integrated device, the wet process integrated device utilizing the sol-gel method to prepare the uranium dioxide cores achieves mass production of the uranium dioxide cores, and resolves the problem of radioactive pollution of nuclear materials during a production process.

Description

technical field

[0001] The invention relates to the technical field of nuclear material processing, in particular to a wet-process integrated equipment for preparing uranium dioxide cores by a sol-gel method. Background technique

[0002] The process of preparing ceramic microspheres by sol-gel method is applied to the preparation of uranium dioxide cores for spherical fuel elements of high temperature gas-cooled reactors. The uranium dioxide fuel core requires high density, high strength and good sphericity.

[0003] The preparation of uranium dioxide core by sol-gel method mainly has the following steps:

[0004] 1. Dissolve, triuranium octaoxide (U 3 o 8 ) powder is dissolved in nitric acid, and configured into a uranyl nitrate solution with a certain concentration of uranium atoms;

[0005] 2. To boil the glue, add urea to the uranyl nitrate solution according to a certain metering ratio, evaporate and concentrate at a certain temperature for a certain period of time...

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