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NaOH Decomposition and Hydrochloric Acid Leaching of Monazite by Hot Digestion Method  

Kim, Sung-Don (Mineral Resources Research Division Korea Institute of Geoscience and Mineral Resources)
Lee, Jin-Young (Mineral Resources Research Division Korea Institute of Geoscience and Mineral Resources)
Kim, Chul-Joo (Mineral Resources Research Division Korea Institute of Geoscience and Mineral Resources)
Yoon, Ho-Sung (Mineral Resources Research Division Korea Institute of Geoscience and Mineral Resources)
Kim, Joon-Soo (Mineral Resources Research Division Korea Institute of Geoscience and Mineral Resources)
Publication Information
Resources Recycling / v.19, no.6, 2010 , pp. 70-76 More about this Journal
Abstract
It was to investigate the optimum leaching conditions for the NaOH hot digestion and hydrochloric acid leaching of Monazite. The optimum condition for NaOH hot digestion was that the concentration of NaOH/TREO mole ratio was 15, the temperature of decomposition $140^{\circ}C$, and reaction time 2 hrs. And the optimum condition for the hydrochloric acid leaching of NaOH hot digestion product was that the concentration of hydrochloric acid was 6N, leaching time 2 hrs and pulp density about 15%. The yield of rare earth oxide was above 90% on the above experimental condition.
Keywords
hot digestion; monazite; alkaline decomposition; HCl leaching;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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