Method and device for sorting uranium dioxide core microspheres

Abstract

The invention discloses a method for sorting uranium dioxide core microspheres. The method comprises the following steps of rough sorting, primarily sorting the uranium dioxide core microspheres; vibration sorting, carrying out vibration sorting on the roughly sorted uranium dioxide core microspheres to remove the abnormal-shaped particles with a poor degree of sphericity; fine sorting, finely sorting the vibration-sorted uranium dioxide core microspheres with a good degree of sphericity; proportion mixing, mixing the finely sorted uranium dioxide core microspheres according to the proportion. The invention also discloses a device for sorting the uranium dioxide core microspheres. The device comprises a rough sorting module, a vibration sorting module, a fine sorting module and a proportion mixing module, wherein the rough sorting module is used for primarily sorting the uranium dioxide core microspheres, the vibration sorting module is used for carrying out vibration sorting on the roughly sorted uranium dioxide core microspheres to remove the abnormal-shaped particles with the poor degree of sphericity, the fine sorting module is used for finely sorting the vibration-sorted uranium dioxide core microspheres with the good degree of sphericity, and the proportion mixing module is used for mixing the finely sorted uranium dioxide core microspheres according to the proportion.

Description

technical field [0001] The invention relates to the technical field of microsphere screening, in particular to a method for sorting uranium dioxide core microspheres. Background technique [0002] Since the 1980s, the high-temperature gas-cooled reactors designed, built and planned to be built in various countries have used TRISO-type coated fuel particles, and the center is generally a low-enrichment uranium dioxide core, which is prepared by the sol-gel method . One of the most important functions of coated particles is to block fission products. This directly requires that the coated particles have a uniform thickness of the coating layer and good sphericity, and correspondingly requires that the coated core has a uniform diameter and good sphericity. Therefore, the selection of diameter and sphericity has become one of the important research topics in the research of uranium dioxide core preparation technology and equipment. [0003] The current method for screening u...

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Problems solved by technology

[0006] The object of the present invention is to solve the problem that deformed particles and debris in the uranium oxide core microspheres stick to the screen or the uranium dioxide core microspheres block the feed pipe of the vibrating separator in the traditional uranium dioxide core microsphere sorting method question

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