US3228750A - Process for separating rare-earth elements by ...

    US3228750A US200894A US20089462A US3228750A US 3228750 A US3228750 A US 3228750A US 200894 A US200894 A US 200894A US 20089462 A US20089462 A US 20089462A US 3228750 A US3228750 A US 3228750A Authority US United States Prior art keywords resin edta solution rare earth rare Prior art date 1962-06-07 Legal status (The legal status is an assumption and is not a legal .

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    US6093376A - Selective separation of rare earth elements ...

    A method is disclosed to separate the heavy rare earth elements Lu through Sm plus Y by an ion-exchange process called selective elution. Mixed rare earths are saturated onto a loading column containing sulfonic resin. Iminodiacetic resin in a separation column is conditioned into the hydrogen and ammonium form before it is saturated with rare earth retaining ion.

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    DOE PAGES Journal Article: Selective Extraction of Rare ...

    Industrial rare earth element (REE) separation facilities utilize acidic cation exchange ligands such as 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester (PC88A) for solvent extraction processes. REE separations are costly and difficult due to their chemical similarities and subsequent low separation .

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    Recent Advances in the Separation of Rare Earth Elements ...

    Abstract: Over the past decades, the need for rare earth elements (REEs) has increased substantially, mostly because these elements are used as valuable additives in advanced technologies. However, the difference in ionic radius between neighboring REEs is small, which renders an efficient sized-based separation extremely challenging.

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    Efficient and Sustainable Regeneration of Bifunctional ...

    This paper developed a novel approach for sustainable stripping and efficient regeneration of acid–base coupling bifunctional ionic liquid (ABC-BIL) for rare earth element (REE) separation. After the stripping using deionized water, both NaOH and Na 2 C 2 O 4 were indicated to be effective for the regeneration of organic phase containing [N ...

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    Technology Allows Inexpensive Extraction of Rare Earth ...

    Oct 17, 2017 · Technology Allows Inexpensive Extraction of Rare Earth Elements. News Oct ... New efficient and inexpensive technologies being developed at Purdue University could allow the extraction of rare earth elements, critical components of many electronics and green products, from waste coal ash. ... "Current separation technologies produce large ...

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    Rare cell isolation and analysis in microfluidics

    Feb 21, 2014 · For rare cell isolation, finding all the rare cells is always the highest priority, so separation efficiency is more important than purity. However, in practice, the shear stress or flow rate cannot be too low and takes too much time, especially for isolation of rare cells that requires screening a large sample volume.

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    Shining light on the separation of rare earth metals

    efficiency of this light-driven chemistry to separate cerium, a rare earth element. The 17 rare earth elements are chemically similar. ... Shining light on the separation of rare earth metals

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    Study on recognition and separation of rare ... - DeepDyve

    Dec 01, 2014 · Read "Study on recognition and separation of rare earth ions at picometre scale by using efficient ion-surface imprinted polymer materials, Hydrometallurgy" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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    Scatec - REEtec – efficient separation of rare earth elements

    Full separation of all 16 REEs may be achieved with very few process steps securing an efficient process and a fairly simple plant lay out. A pilot plant has been built and is in operation at Herøya, Norway where testing and further development of the process is under way. Rare Earth Elements

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    Introduction to Separation Index: Modelling of Rare Earth ...

    Keywords: Rare earth separation, solvent extraction, separation factors, Art vs Science separation structure 1. INTRODUCTION AND MOTIVATION Rare earth element (REE) is a unique group of metals which consists of 15 elements of lanthanides as well as scandium and yttrium. Within the lanthanides group, the elements can be further

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    (PDF) Efficient separation of rare earths recovered by a ...

    Efficient separation of rare earths recovered by a supported ionic liquid from bauxite residue leachate Article (PDF Available) in RSC Advances 8(22) · March 2018 with 233 Reads How we measure ...

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    Efficient separation of rare earths recovered by a ...

    Efficient separation of rare earths recovered by a supported ionic liquid from bauxite residue leachate† Dˇzenita Avdibegovi c,´ Mercedes Regad´ıo and Koen Binnemans * Bauxite residue (BR) contains substantial concentrations of rare-earth elements (REEs), but their recovery is a challenge.

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    Rare Earth Separation and Recycling Company. | Seren

    Seren Technologies Limited focusses on the separation of rare earths from each other. This is the crucial factor for rare earth elements as their chemical make-ups are very similar meaning separating one from another currently requires intensive processing which is inefficient, environmentally damaging and uneconomic. This mean recycling of rare earths is a limited activity which would ...

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    Shining light on the separation of rare earth metals

    Oct 18, 2018 · Now, researchers have revealed how certain molecular structures can improve the efficiency of this light-driven chemistry to separate cerium, a rare earth element. The 17 rare .

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    Rare-earth element - Wikipedia

    Their industrial use was very limited until efficient separation techniques were developed, such as ion exchange, fractional crystallization and liquid–liquid extraction during the late 1950s and early 1960s. Some ilmenite concentrates contain small amounts scandium and other rare-earth elements, which could be analysed by XRF .

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    Technique for Enhanced Rare Earth Separation | Science

    Sep 29, 2000 · A process is demonstrated for the efficient separation of rare earth elements, using a combination of selective reduction and vacuum distillation of halides. The large differences in the redox chemistry of the rare earth elements and in the vapor pressures of rare earth di- and trihalides are exploited for separation. Experimental proof of concept is provided for the binary systems ...

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    Efficient separation of rare earths recovered by a ...

    Efficient separation of rare earths recovered by a supported ionic liquid from bauxite residue leachate† Dˇzenita Avdibegovi c,´ Mercedes Regad´ıo and Koen Binnemans * Bauxite residue (BR) contains substantial concentrations of rare-earth elements (REEs), but their recovery is a challenge.

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    (PDF) Highly efficient separation of rare earths from ...

    An environmentally friendly process for the separation of the transition metals copper, cobalt, iron, manganese and zinc from rare earths by solvent extraction with the ionic liquid trihexyl ...

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    Highly efficient separation of rare earths from nickel and ...

    1 Manuscript for: Green Chemistry (full paper) Manuscript number: GC-ART-08-2013-041577.R3 (revision 3) Highly efficient separation of rare earths from nickel and cobalt by .

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    THE EXTRACTION AND RECOVERY OF RARE EARTH .

    THE EXTRACTION AND RECOVERY OF RARE EARTH ELEMENTS FROM PHOSPHATE USING PX-107 AND CHELOK® POLYMERS Prepared by ... Rare earth elements (REE) include 15 of the lanthanum series, as well as the non- ... improved separation techniques, more efficient metal recovery

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