提高稀土分离技术的技术
1Research Center for Metallurgical Process Engineering, Institute for Advanced Materials Processing, Tohoku University, Sendai 980-8577, Japan. Department of Metallurgy, Indian Institute of Science, Bangalore 560 012, India.
Science (New York, N.Y.)
|September 29, 2000
概括
本研究介绍了一种高效的方法,用于通过选择性减少和真空蒸来分离稀土元素. 该过程显著改善了新和等元素的分离,这对于先进材料至关重要.
科学领域:
- 无机化学 无机化学 有机化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 稀土元素 (REEs) 对现代技术至关重要.
- 目前的分离方法往往是低效和昂贵的.
- 开发新的REE分离技术是必不可少的.
研究的目的:
- 展示一种有效的稀土元素分离工艺.
- 为了利用氧化还原化学和化物蒸汽压力的差异进行分离.
- 为了验证二元REE系统的流程.
主要方法:
- 选择性减少稀土化物.
- 稀土二和三化物的真空蒸.
- 实验验证使用praseodymium-neodymium和neodymium-samarium二进制系统.
主要成果:
- 实现了稀土元素的高效分离.
- 利用了氧化还原潜力和化物蒸汽压力的显著差异.
- 展示了前-新和新-萨马混合物的概念证明.
- 提高了samarium和neodymium隔离的分离因子十倍以上.
结论:
- 选择性还原和真空蒸过程的组合对于REE分离是有效的.
- 这种方法比现有技术有了显著的改进.
- 该过程显示出对关键稀土元素的工业规模净化有前景.
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