Device for preparing large-size monodisperse uranium dioxide microspheres

Abstract

The invention relates to a device for preparing large-size monodisperse uranium dioxide microspheres, and belongs to the technical field of ceramic forming. The preparation device comprises a dispersion phase fluid inlet pipe, a continuous phase fluid inlet pipe, an outlet pipe, a T-shaped tee joint and a water bath tank;adispersionphase fluid uranium glue solution and acontinuous phase fluid silicone oil are respectivelyintroduced into the T-shaped tee joint through the dispersionphase fluid inlet pipe and the continuous phase fluid inlet pipe, and the silicone oil is adopted for shearing theuranium glue solution at the tail ends of capillary tubes, so that the uranium glue solution is crushed into liquid drops with uniform sizes one by one. The size of the outlet pipe in the T-shaped tee joint can be flexibly replaced, and therefore large-size liquid drops can be flexibly prepared by adjusting the flow of uranium glue solution and silicone oil and the size of the outlet pipe. The large liquid drops may be insufficiently cured, the outlet pipe can be placed in a temperature-controllable water bath to be pre-cured, and energy is provided for curing of the large liquid drops, so that the large-size gel microspheres with good sphericity and uniform size are obtained.

Description

technical field [0001] The invention relates to a device for preparing large-size monodisperse uranium dioxide microspheres, belonging to the technical field of ceramic molding. Background technique [0002] The internal gel process in the sol-gel method can avoid direct processing of radioactive powder due to the good sphericity of the prepared microspheres, and becomes UO 2 The first choice for the preparation method of ceramic microspheres. However, the traditional inner gel process (using vibration dispersion to drop balls) requires freezing and uneven particle size distribution in the presence of gel solution, so it is difficult to prepare monodisperse UO 2 Shortcomings such as microspheres, so it needs to be optimized. However, the capillary microfluidic device in microfluidic technology is easy to disassemble and easy to operate, and the prepared microspheres have uniform size and good monodispersity. [0003] Researchers have explored the capillary microfluidic de...

AI Technical Summary

Problems solved by technology

Such large-sized sol droplets are easy to settle in the microchannel due to their own gravity and collapse, which makes the sphericity of the ceramic microspheres worse.

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