A method for separating actinium from an irradiated thorium target

By employing a four-stage tandem separation and purification process involving cation exchange resin column, UTEVA or TK200 resin extraction column, DGA resin extraction column, and LN resin extraction column, the problem of high thorium and lanthanide impurities in actinium products from irradiated thorium targets was solved, achieving high purity and high recovery rate separation of actinium products.

CN117504949BActive Publication Date: 2026-03-03STATE POWER INVESTMENT NUCLIDES TONGCHUANG (CHONGQING) TECH CO LTD
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Patent Information

Application Number
CN202311390371.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-24
Publication Date
2026-03-03
Estimated Expiration
2043-10-24

AI Technical Summary

Technical Problem

The existing process for separating actinium products from irradiated thorium targets results in high levels of thorium and lanthanide impurities, which is detrimental to the further processing and application of actinium products.

Method used

A four-stage tandem separation and purification process was adopted, consisting of a cation exchange resin column, a UTEVA or TK200 resin extraction column, a DGA resin extraction column, and an LN resin extraction column. Actinium was gradually separated and purified by washing with different inorganic acids and using complexing agents.

Benefits of technology

It effectively separated impurity elements in drill sawing, improved the purity of actinium products, achieved high recovery rate and high purity separation of actinium products, and reduced the content of thorium and lanthanide elements.

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Abstract

The present application relates to a kind of methods for separating actinium from irradiated thorium target, belong to medical radioisotope manufacturing technical field, solve the problem that thorium element and lanthanide element impurity content in final actinium product in prior art is higher.The present application discloses a kind of methods for separating actinium from irradiated thorium target, first, irradiated thorium target is dissolved, then using cation exchange resin column, UTEVA or TK200 resin extraction column, DGA resin extraction column, LN resin extraction column four-stage series separation purification process, obtain final actinium product.Actinium is efficiently and selectively recovered, and the thorium element and lanthanide element impurity content in final actinium product is significantly reduced.
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