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Separation of Rare Earth and Fluorite Phases from Bayan Obo Ore at Low Temperature by Super-Gravity
2018
ISIJ International
Preserved Fulltext
The iron-slag separation of gaseous reduced Bayan Obo ore was conducted at a low temperature by super-gravity for the aim of separating rare earth and fluorite phases. Driven by the super-gravity, the slag melt went through the filter, whereas the iron grains were effectively intercepted by the filter. Moreover, the fluorite remained in solid particles and migrated to the lower slag, while all REEs precipitated into Ca 3 (Ce,La,Pr,Nd) 2 [(Si,P)O 4 ] 3 F crystals and concentrated in the bottom slag at 1 373 K-1 473 K.
doi:10.2355/isijinternational.isijint-2017-034
fatcat:edqpztawirb23d26yghth6222m