Separation of thorium from uranium ore

被引：7

作者：

Kmak, Kelly N. ^{[1
]}

Shaughnessy, Dawn A. ^{[2
]}

Vujic, Jasmina ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA

[2] Lawrence Livermore Natl Lab, Nucl & Chem Sci Div, Livermore, CA 94550 USA

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2020年 / 323卷 / 02期

关键词：

Uranium ore; Th-230; Liquid-liquid separation; Ion exchange chromatography; SOLVENT-EXTRACTION; RECOVERY; TH-230; TBP; TH;

D O I：

10.1007/s10967-019-06980-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Thorium-230 has many research applications, but there is not a commercial source of this isotope. However, since Th-230 is part of the U-238 decay chain, it can be separated from naturally occurring uranium. In this work, a novel procedure was developed to separate thorium from uranium ore, consisting of leaching, liquid-liquid extraction, precipitations and ion exchange chromatography. The final product was 91.32 +/- 0.77 mg of thorium with a purity of 99.5 +/- 1.2 wt%. Of that, 7.65 +/- 0.10 mg was Th-230 and the remainder Th-232. The total yield of Th-230 was 71.1 +/- 5.4%. Ways to improve the yield by further processing the back-extraction solution are suggested.

引用

页码：931 / 945

页数：15

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