Particle material batch mixing device

Abstract

The invention discloses a particle material batch mixing device. The particle material batch mixing device comprises a loading mechanism, a feeding mechanism, a material speed control unit, a collector, at least two sets of stock bins, a static mixer and a circulation barrel, wherein feeding openings of the stock bins communicate with a material source through the loading mechanism; an outlet of the collector communicates with a feeding hole of the static mixer, and the static mixer comprises at least two groups of mixing units with opposite rotating directions; and a discharge port of the static mixer communicates with the circulation barrel. The device is excellent in mixing effect, flexible, compact and wide in application, and material damage caused by extrusion and grinding between particles and equipment and between the particles is avoided. The device is is particularly suitable for batch mixing of nuclear fuel, and the contradiction between multi-batch mass mixing and nuclear fuel critical reaction is solved.

Description

technical field [0001] The invention relates to the technical field of material mixing batching equipment, in particular to a granular material mixing batching device. Background technique [0002] In industrial production, different batches of materials need to be mixed to ensure the uniformity and stability of the product. For granular substances, different batches of materials can be placed in large containers, mainly through two forms to achieve the purpose of uniform particle distribution: 1. Through mechanical stirring, different forms of stirring mechanisms are used to drive the movement of particles to achieve the purpose of mixing. Stirring forms include ribbon type, coulter type, biaxial paddle, etc.; 2. Through the asymmetric structure or asymmetric rotation of the container to achieve uniform mixing, such as V-shaped mixer, conical mixer, double-cone mixing mixer, rocker mixer, etc. [0003] For special granular materials such as spherical nuclear fuel particle...

AI Technical Summary

Problems solved by technology

However, this method requires multiple divisions of materials, which is inefficient and cannot meet the needs of large-scale production

For nuclear fuel, due to the existence of "criticality", it is determined that in mass production, multiple batches cannot be mixed in the same container, otherwise there is a danger of criticality accidents

If the asymmetric container rotation method is used for mixed batching, the production capacity and mixed batch efficiency will be low in large-scale production due to the existence of a critical state; and the use of mechanical agitation will cause extrusion and grinding forces on the particles, which will easily cause particles damaged

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