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Uranium foil dissolving device for irradiated LEU (low-enriched uranium) foil target

A technology of dissolving device and foil target, which is applied in the field of uranium foil dissolving device for irradiating low-enriched uranium foil targets, can solve problems such as instability, and achieve the effects of rapid dissolution, complete dissolution, and simple operation.

Active Publication Date: 2016-04-20
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] u 3+ Is a strong reducing agent, very unstable even in acidic solution

Method used

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  • Uranium foil dissolving device for irradiated LEU (low-enriched uranium) foil target
  • Uranium foil dissolving device for irradiated LEU (low-enriched uranium) foil target
  • Uranium foil dissolving device for irradiated LEU (low-enriched uranium) foil target

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Experimental program
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Embodiment Construction

[0060] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0061] Such as figure 1 Shown is the uranium foil dissolving device for irradiated low-enriched uranium target provided by the present invention, which includes a support 2 and a dissolver 1 arranged on the support 2. A heater 3 is provided at the bottom of the dissolver 1, and the heater 3 includes a thermal resistance 4. The temperature required for the dissolution process can be controlled through the thermal resistance 4, so as to accelerate the dissolution of the target. The dissolver 1 is respectively provided with a liquid inlet pipeline 43 , a liquid outlet pipeline 45 , a gas absorption pipeline 44 and a liquid outlet pipeline 45 .

[0062] The liquid inlet line 43 is a liquid inlet line, which is provided with a valve 5 for controlling the amount of liquid inlet, and nitric acid is added into the dissolver 2 f...

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Abstract

The invention relates to a uranium foil dissolving device for an irradiated LEU (low-enriched uranium) foil target. The uranium foil dissolving device comprises a dissolver (1), wherein a heater (3) is arranged at the bottom of the dissolver (1); a liquid inlet pipeline (43), a gas absorbing pipeline (44) and a liquid outlet pipeline (45) are arranged in the dissolver (1) in a penetrating manner; a pressure limiting check valve (8), a gas absorbing unit and a gas storage unit are sequentially arranged on the gas absorbing pipeline (44). With the adoption of the dissolving device, irradiated LEU can be quickly dissolved, and gas waste produced in a system can be processed and stored, so that safe emission of gas produced in the dissolution process is guaranteed, and safety of operators and the environment are guaranteed; impurities are removed from the completely dissolved target, and a foundation is laid for acquisition of <99>Mo through further separation and extraction.

Description

technical field [0001] The invention belongs to the field of dissolving radioactive substances, and in particular relates to a uranium foil dissolving device for an irradiated low-enriched uranium foil target. Background technique [0002] 99 Mo is an artificial radionuclide with a half-life of 66h and decays to 99m Tc. 99m Tc is the most widely used isotope in modern nuclear medicine, 99m Tc drugs account for more than 80% of clinical radiodiagnostic drugs. [0003] 99 Mo can be obtained in various ways: ①From 235 Extraction of U fission products, nuclear reactions: 235 U(n,f) 99 Mo; ② Molybdenum-98 irradiated by thermal neutrons, nuclear reaction: 98 Mo(n,γ) 99 Mo; ③ Accelerator proton induced 238 U fission, nuclear reaction: 238 U(p,f) 99 Mo; ④ Accelerator irradiated molybdenum, nuclear reaction: 100 Mo(p,np) 99 Mo. Although there are many ways and technologies to produce, the main way to get high specific activity products is to generate by fission reactio...

Claims

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Application Information

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IPC IPC(8): C22B3/02C22B3/06
CPCC22B3/02C22B3/065
Inventor 于宁文罗志福向学琴邓新荣梁积新
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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