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Beneficiation of Low‐Grade Rare Earth Ore from Khalzan Buregtei Deposit (Mongolia) by Magnetic Separation

Ilhwan Park, Yuki Kanazawa

2021Englishmineral processingbeneficiationcomminutionflotationphysical separationrare earth elements

Abstract

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The global demand for rare earth elements (REEs) is expected to increase significantly because of their importance in renewable energy and clean storage technologies, which are critical for drastic carbon dioxide emission reduction to achieve a carbon-neutral society. REE ore deposits around the world are scarce and those that have been identified but remain unexploited need to be developed to supply future demands. In this study, the Khalzan Buregtei deposit located in western Mongolia was studied with the aim of upgrading low-grade REE ore via magnetic separation techniques. The total REE content in this ore was ~6720 ppm (~3540 ppm light REE (LREE) + ~3180 ppm heavy REE (HREE)) with bastnaesite, pyrochlore, synchysite, and columbite-(Fe) identified as the main REE-bearing minerals. As the particle size fraction decreased from −4.0 + 2.0 mm to −0.5 + 0.1 mm, the recovery by dry high-intensity magnetic separation (DHIMS) increased from 20% to 70% of total rare earth oxide (TREO) while the enrichment ratio reached 2.8 from 1.3. Although effective, gangue minerals such as quartz and aluminosilicates were recovered (~22%) due most likely to insufficient liberation. Meanwhile, the wet high-intensity magnetic separation (WHIMS) could produce a magnetic concentrate with TREO.

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Cite This Work

@article{38ce7391-6f08-4719-b5b1-f4726ae5c995,
  title={Beneficiation of Low‐Grade Rare Earth Ore from Khalzan Buregtei Deposit (Mongolia) by Magnetic Separation},
  author={Ilhwan Park and Yuki Kanazawa},
  year={2021},
  language={English}
}
TY  - JOUR
TI  - Beneficiation of Low‐Grade Rare Earth Ore from Khalzan Buregtei Deposit (Mongolia) by Magnetic Separation
AU  - Ilhwan Park
AU  - Yuki Kanazawa
PY  - 2021
LA  - English
ER  -

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