MOX waste core block crushing device

Abstract

The invention belongs to the technical field of nuclear fuel production waste processing, and particularly relates to an MOX waste core block crushing device. The lower end of a spiral feeding mechanism is connected with the upper end of a material collection device shell. The upper end of a double-roller shell is connected with the lower end of the material collection device shell. Double rollersare located in the double-roller shell. The upper end of a fixed cone is connected with the lower end of the double-roller shell. A movable cone is arranged in the fixed cone. An eccentric shaft is inserted in the movable cone. The center axis of the movable cone does not coincide with the center axis of the eccentric shaft. The eccentric shaft is matched with a transmission shaft through a gear.The transmission shaft is connected with a transmission motor A through a coupling. The lower end of the fixed cone is connected with a material collection shell with the bottom face inclined. The eccentric shaft penetrates the material collection shell. The lower end of the material collection shell is connected with a material collection container. The material collection container is arrangedon a lifting rack. The double rollers are made to move oppositely at different rotating speeds by a transmission motor B through a gear set. By means of the MOX waste core block crushing device, unqualified MOX fuel core blocks subjected to sintering are crushed into powder particles which are of a certain particle size and certain particle size uniformity, and the MOX raw material recycling requirement is met.

Description

technical field [0001] The invention belongs to the technical field of nuclear fuel production waste product treatment, and in particular relates to a MOX waste pellet crushing device. Background technique [0002] After MOX pellets are sintered or ground, unqualified products such as size and appearance may be produced, which cannot be used in the production of fuel assemblies. The waste material after sintering or grinding is basically the same as the raw material composition, and there are some differences in some physical and chemical parameters. After grinding, crushing and processing, it can be added to the raw material powder in a certain proportion, and reused to improve the use efficiency of raw materials. Since the strength and hardness of the pellets increase significantly after sintering, it is more difficult to break them. Coupled with the high irradiation characteristics of the pellets, it is necessary to reduce the amount of operation of the operator or enhan...

AI Technical Summary

Problems solved by technology

Traditional equipment uses agitator ball mills to crush waste pellets, which can easily cause dust to fly during the crushing process. At the same time, due to the increase in the strength of the pellets, it takes a long time for the powder to meet the requirements of recycling, while the grinding balls and crushed materials Separation adopts manual screening method, which increases the workload of workers and reduces work efficiency; at the same time, the use of stainless steel grinding balls introduces a certain amount of impurities, which affects the composition of raw materials

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