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Related Experiment Video

Updated: Sep 22, 2025

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
13:21

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Published on: July 21, 2011

15.1K

Simulation of Lanthanum Purification Using a Finite Element Method.

Dehong Chen1,2, Chuang Yu1,2, Zhiqiang Wang1,2

  • 1National Engineering Research Center for Rare Earth Materials, GRINM Group Co., Ltd., Beijing 100088, China.

Materials (Basel, Switzerland)
|May 20, 2022
PubMed
Summary
This summary is machine-generated.

Zone refining effectively purifies lanthanum, but molten region temperatures are hard to measure. This study used finite element analysis to simulate zone refining, validating it with experiments and revealing impurity distribution factors.

Keywords:
finite element analysislanthanumthe impurity distributionultimate purificationzone refining

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Area of Science:

  • Materials Science
  • Metallurgical Engineering
  • Computational Modeling

Background:

  • Zone refining is a key purification technique for lanthanum.
  • Experimental measurement of molten zone temperature distribution is challenging.

Purpose of the Study:

  • To develop and validate a finite element analysis model for lanthanum zone refining.
  • To investigate the effects of process parameters on temperature distribution and impurity segregation.
  • To understand the influence of molten region width on impurity distribution.

Main Methods:

  • Finite element analysis (FEA) for simulation model development.
  • Experimental zone refining of lanthanum.
  • Comparison of simulated and experimental impurity distribution data.
  • Solving the limiting distribution equation.

Main Results:

  • The FEA model showed good agreement with experimental results.
  • Simulations revealed the impact of current and frequency on temperature and molten zone width.
  • Experiments demonstrated impurity distribution changes with varying molten region widths.
  • The influence of molten region width on limiting impurity distribution was quantified.

Conclusions:

  • FEA is a reliable tool for simulating lanthanum zone refining.
  • Optimizing current, frequency, and molten region width can enhance lanthanum purification.
  • The study provides insights into controlling impurity segregation during zone refining.