控制镧热还原制备镱原子蒸气密度的工艺研究*

doi:10.13385/j.cnki.vacuum.2025.04.08

真空 ›› 2025, Vol. 62 ›› Issue (4): 44-48.doi: 10.13385/j.cnki.vacuum.2025.04.08

控制镧热还原制备镱原子蒸气密度的工艺研究^*

胡林松¹, 金策^1,2

1.核工业理化工程研究院, 天津 300180;
2.粒子输运与富集技术全国重点实验室, 天津 300180

收稿日期:2025-02-10 出版日期:2025-07-25 发布日期:2025-07-24
作者简介:胡林松（1988-）,男,天津人,硕士,助理工程师。
基金资助:
*粒子输运与富集技术全国重点实验室（GZ-WZJC-2023-01）

Research on Control Process of Ytterbium Atomic Vapor Density Prepared by Lanthanum Thermal Reduction

HU Linsong¹, JIN Ce^1,2

1. Institute of Physical and Chemical Engineering in Nuclear Industry, Tianjin 300180, China;
2. National Key Laboratory of Particle Transport and Separation Technology, Tianjin 300180, China

Received:2025-02-10 Online:2025-07-25 Published:2025-07-24

摘要/Abstract

摘要： 目前,工业上应用镧热还原法制备镱的反应温度一般设置为1 200 ℃左右,该温度下金属镱的收率和纯度很高,但还原反应十分剧烈,而一些特定工业领域对反应产物的原子蒸气密度提出了严格要求。针对该问题,本文以高纯氧化镱和镧屑为原料,对镧热还原制备镱的工艺和还原反应热力学进行分析,研究了还原反应温度和还原剂过量比对金属镱原子蒸气密度的影响规律。结果表明：650 ℃下存在微量还原反应;700~800 ℃镱原子蒸气密度随还原温度升高剧烈增加;高于800 ℃时镱原子蒸气密度均在10¹² cm^-3以上;850~1 000 ℃下,反应产物镱的纯度不低于99.79%,当还原剂过量比低于100%时,提高反应温度,镱原子蒸气密度仍显著增加。

关键词: 镧热还原, 镱, 真空蒸馏, 稀土, 蒸气密度

Abstract: At present, the temperature for preparing ytterbium by lanthanum thermal reduction method in industry is usually set at 1 200 ℃, the yield and purity of ytterbium are high, but the reaction is intense. In view of the fact that some specific engineering fields have strict requirements for atomic vapour density of the reaction product, this article analyses the process and thermodynamics of lanthanum thermal reduction to prepare ytterbium with high purity ytterbium oxide and lanthanum chips as raw materials. The influence of reduction temperature and reducing agent ratio on atomic vapour density were studied. The results show that there is a slight reaction at 650 ℃. At 700-800 ℃, the atomic vapour density increases dramatically with the temperature. The atomic vapour density is above 10¹² cm^-3 over 800 ℃. At 850-1 000 ℃, the purity of the reaction product is not less than 99.79%, when the excess ratio of reducing agent is lower than 100 %, the ytterbium atom vapour density still increases significantly with the increase of reaction temperature.

Key words: lanthanum thermal reduction, ytterbium, vacuum distillation, rare earth, vapour density

中图分类号: O616

胡林松, 金策. 控制镧热还原制备镱原子蒸气密度的工艺研究^*[J]. 真空, 2025, 62(4): 44-48.

HU Linsong, JIN Ce. Research on Control Process of Ytterbium Atomic Vapor Density Prepared by Lanthanum Thermal Reduction[J]. VACUUM, 2025, 62(4): 44-48.

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控制镧热还原制备镱原子蒸气密度的工艺研究^*

Research on Control Process of Ytterbium Atomic Vapor Density Prepared by Lanthanum Thermal Reduction

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