Preparation method for metallic uranium

Abstract

The invention discloses a preparation method for metallic uranium, relates to the field of methods for preparing uranium, and specifically relates to the field of methods for preparing uranium by applying a molten salt electrochemistry technology. The specific technical scheme is as follows: U3O8 is heated to remove water, and CCl4 gas and high-purity nitrogen gas are mixed and charged into a quartz pipe for 2-6h at 400-460 DEG C to obtain UCl4; a product A is mixed with the mixed molten salt of LiCl and KCl, electrification is carried out for 1h to 20h at a current of 0.1A to 1A and at 673-873K, and a material metallic uranium crude product or an electrode made from U-Ga alloy is taken out; and a material B is taken as an anode, a molybdenum sheet is taken as a cathode, and electrolysis is carried out for 1-40h at 0.1A-1A, and high-purity metallic uranium can be separated from B. The embodiments indicate that the preparation method for metallic uranium is capable of greatly increasingthe separation speed for metallic uranium and greatly improving the purity of metallic uranium, and significant to nuclear power construction in China to a certain extent.

Description

technical field [0001] The invention relates to the field of a method for preparing uranium, in particular to the field of a method for preparing uranium by using molten salt electrochemical technology. Background technique [0002] When the prior art prepares metal uranium by electrolysis, U 3 o 8 Direct electrolysis is time-consuming, low yield, and produces a large amount of chlorine gas and waste molten salt. Cui Enyu of the Korea Institute of Atomic Energy et al. 2 O molten salt try to put U 3 o 8 For metallization research, the product was obtained after electrolysis at high temperature for more than 40 hours. At the same time, the constant potential electrolysis method used would decompose a large amount of molten salt and produce chlorine gas as a by-product, which seriously affected the progress of the experiment. [0003] Zhang Yu and others from the Nuclear Technology Support Center of the State Administration of Science, Technology and Industry for National D...

AI Technical Summary

Problems solved by technology

[0007] The existing technology cannot obtain metal uranium quickly and efficiently, because U 3 o 8 If the solubility is too low, it will deposit at the bottom of the molten salt and cannot fully contact with the current, thereby reducing the electrolysis efficiency, and its ionic bond energy is very large, making electrolysis difficult;

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