Preparation of rare earth oxides from Synchysite oxidized ore by acid leaching

  • Temuujin J Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, MAS 4th building, Peace Avenue, Bayanzurkh district, Ulaanbaatar 13330, Mongolia
  • Burmaa G Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, MAS 4th building, Peace Avenue, Bayanzurkh district, Ulaanbaatar 13330, Mongolia
  • Davaabal B Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, MAS 4th building, Peace Avenue, Bayanzurkh district, Ulaanbaatar 13330, Mongolia
  • D S Kim Korea Institute of Ceramic Engineering & Technology, Jinju, South Korea
  • H J Lee Korea Institute of Ceramic Engineering & Technology, Jinju, South Korea
Keywords: Synchysite, leaching, calcination, mixed rare earth oxides,

Abstract

Mixed rare earth oxides have been prepared from synchysite ore from the Lugiin gol rare earth deposit (Mongolia) which contains about 6% of cerium light rare earth elements. Ore powders were leached for up to 60 min using 80-120 g/l sulfuric acids at an acid to powder ratio of 20, agitation was performed by magnetic stirring followed by precipitation and calcination at 700°C for 1h. The highest leaching of REEs equal to 85% of the total REE was observed in the acid solution of 80 g/l. Obtained mixed rare earth oxides represent a layered type structure.

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Abstract
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PDF
202
Published
2018-02-13
How to Cite
J, T., G, B., B, D., Kim, D., & Lee, H. (2018). Preparation of rare earth oxides from Synchysite oxidized ore by acid leaching. Mongolian Journal of Chemistry, 18(44), 1-4. https://doi.org/10.5564/mjc.v18i44.931
Section
Short communication