FIELD: chemistry.
SUBSTANCE: invention relates to the extraction of rare-earth elements (REE) in the complex processing of technological and productive solutions, and can be used in the technology of obtaining REE concentrates. In the REE recovery method, REE sorption is carried out on a complexing ion exchanger containing as an active component a mixture of MonoDGA and bis [(trifluoromethyl) sulfonyl] imid-1-butyl-3-methylimidazolium (C4mimTf2N) in the molar ratio of MonoDGA : C4mimTf2N = 2÷5:1, which leads to a more effective subsequent processing of desorption solutions to obtain cleaner and richer REE concentrates.
EFFECT: increasing the recovery of rare-earth elements and the selectivity of the complexing ion exchanger in rare-earth elements.
2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING SCANDIUM CONCENTRATE FROM SCANDIUM-CONTAINING SOLUTION | 2018 |
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|
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|
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| METHOD OF PRODUCING SCANDIUM CONCENTRATE | 2018 |
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| METHOD OF EXTRACTING RARE-EARTH METALS FROM TECHNOLOGICAL AND PRODUCTIVE SOLUTIONS AND PULPS | 2010 |
|
RU2484162C2 |
| METHOD OF EXTRACTING SCANDIUM FROM SCANDIUM-BEARING PRODUCT SOLUTION | 2015 |
|
RU2612107C2 |
| METHOD FOR EXTRACTING RARE EARTH METALS FROM PRODUCTIVE SOLUTIONS IN SULFURIC ACID LEACHING OF URANIUM ORES | 2018 |
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| METHOD FOR PROCESSING WASTE SCANDIUM SOLUTIONS OF URANIUM PRODUCTION | 2016 |
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RU2622201C1 |
