Combined Physicochemical and Energy Methods to Improve the Recovery of Rare Earth Elements from Eudialyte Concentrate

被引:1
|
作者
Chanturiya, Valentine A. [1 ]
Minenko, Vladimir G. [1 ]
Samusev, Andrey L. [1 ]
Ryazantseva, Maria V. [1 ]
Koporulina, Elizaveta V. [1 ]
机构
[1] Russian Acad Sci, NV Melnikovs Inst Comprehens Exploitat Mineral Res, Kryukovsky Tupik 4, Moscow 111020, Russia
关键词
eudialyte; acid leaching; energy impacts; zirconium; rare earth elements; EXTRACTION; EFFICIENCY; ZIRCONIUM; METALS; IRON;
D O I
10.3390/min13030414
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
The parameters for efficient nitric acid leaching were experimentally determined, which ensured the recoveries of Zr and REEs from eudialyte concentrate up to 87.0%-91.7% and 76.0%-81.1%, respectively. The possibility was shown of intensifying the leaching process through preliminary energy treatments to ensure the intensive breakdown of mineral complexes and grains; as a result, the recovery of Zr and REEs increased by more than 10%. A process was developed for the selective recovery of up to 91.5% of zirconium and up to 71.2% of REEs in the form of carbonate compounds from the pregnant solution of nitric acid leaching by chemical precipitation as well as up to 81.1% REEs and up to 91.7% zirconium on hypercrosslinked polystyrene sorbents.
引用
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页数:21
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