RU2012123114A - METHOD FOR ISOLATING GADOLINI BY EXTRACTION OF PHOSPHORORHANIC COMPOUNDS - Google Patents

METHOD FOR ISOLATING GADOLINI BY EXTRACTION OF PHOSPHORORHANIC COMPOUNDS Download PDF

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Publication number
RU2012123114A
RU2012123114A RU2012123114/05A RU2012123114A RU2012123114A RU 2012123114 A RU2012123114 A RU 2012123114A RU 2012123114/05 A RU2012123114/05 A RU 2012123114/05A RU 2012123114 A RU2012123114 A RU 2012123114A RU 2012123114 A RU2012123114 A RU 2012123114A
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Prior art keywords
gadolinium
extraction
acid
stage
phase
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RU2012123114/05A
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Russian (ru)
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RU2518619C2 (en
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Александр Васильевич Вальков
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Александр Васильевич Вальков
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

1. Способ выделения гадолиния экстракцией из нитратных растворов редкоземельных элементов фосфорорганическими кислотами в противотоке, включающий извлечение тербия, диспрозия и более тяжелых РЗЭ в органическую фазу, промывку и реэкстракцию на первой стадии, отличающийся тем, что из полученного рафинатного раствора на второй стадии извлекают в органическую фазу гадолиний, оставляя европий, самарий, неодим и остальные цериевые РЗЭ в водной фазе, из полученной органической фазы извлекают гадолиний в реэкстракт, причем весь реэкстракт, содержащий гадолиний, возвращают на стадию промывки и ведут процесс до достижения требуемого содержания самария и европия в гадолинии, выводят полученный раствор гадолиния и процесс повторяют вновь.2. Способ по п.1, отличающийся тем, что в качестве экстрагента применяют 20-40% (об.) растворы ди-2-этилгекилфосфорной кислоты или бис((2,4,4)триметилпентилфосфиновой кислоты, или изододецилфосфетановой кислоты.1. A method for the isolation of gadolinium by extraction from nitrate solutions of rare-earth elements with organophosphorus acids in a countercurrent, including the extraction of terbium, dysprosium and heavier rare-earth elements into the organic phase, washing and re-extraction in the first stage, characterized in that from the resulting raffinate solution in the second stage is extracted into the organic the gadolinium phase, leaving europium, samarium, neodymium and other cerium REEs in the aqueous phase, gadolinium is extracted from the resulting organic phase into the reextract, and the entire reextract containing gadolinium is returned to the washing stage and the process is carried out until the required content of samarium and europium in gadolinium is reached, remove the resulting gadolinium solution and repeat the process again. 2. The method according to claim 1, characterized in that as the extractant used 20-40% (vol.) Solutions of di-2-ethylhekylphosphoric acid or bis ((2,4,4) trimethylpentylphosphinic acid, or isododecylphosphetanoic acid.

Claims (2)

1. Способ выделения гадолиния экстракцией из нитратных растворов редкоземельных элементов фосфорорганическими кислотами в противотоке, включающий извлечение тербия, диспрозия и более тяжелых РЗЭ в органическую фазу, промывку и реэкстракцию на первой стадии, отличающийся тем, что из полученного рафинатного раствора на второй стадии извлекают в органическую фазу гадолиний, оставляя европий, самарий, неодим и остальные цериевые РЗЭ в водной фазе, из полученной органической фазы извлекают гадолиний в реэкстракт, причем весь реэкстракт, содержащий гадолиний, возвращают на стадию промывки и ведут процесс до достижения требуемого содержания самария и европия в гадолинии, выводят полученный раствор гадолиния и процесс повторяют вновь.1. The method of separation of gadolinium by extraction from nitrate solutions of rare-earth elements with organophosphorus acids in countercurrent, including the extraction of terbium, dysprosium and heavier REEs into the organic phase, washing and reextraction in the first stage, characterized in that they are extracted into the organic phase from the obtained raffinate solution in the second stage the gadolinium phase, leaving europium, samarium, neodymium and other cerium REEs in the aqueous phase, gadolinium is extracted from the obtained organic phase into a reextract, the entire reextract being ERZHAN gadolinium is recycled to the washing step and the process leading to a desired content of samarium and europium gadolinium, gadolinium solution obtained is output and the process is repeated again. 2. Способ по п.1, отличающийся тем, что в качестве экстрагента применяют 20-40% (об.) растворы ди-2-этилгекилфосфорной кислоты или бис((2,4,4)триметилпентилфосфиновой кислоты, или изододецилфосфетановой кислоты. 2. The method according to claim 1, characterized in that 20-40% (vol.) Solutions of di-2-ethylhekylphosphoric acid or bis ((2,4,4) trimethylpentylphosphinic acid, or isododecylphosphetanoic acid are used as extractant.
RU2012123114/05A 2012-06-05 2012-06-05 Method of separating gadolinium by extraction with phosphoroorganic compounds RU2518619C2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114774690A (en) * 2022-04-06 2022-07-22 南昌航空大学 Method for preparing pure praseodymium and pure neodymium by extracting and separating 2N grade praseodymium neodymium chloride

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2640201C1 (en) * 2017-01-11 2017-12-27 Сергей Германович Тарасов Method for producing isododecylphosphetanoic acid
RU2693714C1 (en) * 2018-12-25 2019-07-04 Общество С Ограниченной Ответственностью "Лаборатория Инновационных Технологий" Method of extraction separation of rare-earth elements

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SU1822107A1 (en) * 1987-01-04 1995-11-27 Институт Физической Химии Ан Ссср Method of extractive separation of rare-earth elements
RU2049133C1 (en) * 1992-11-19 1995-11-27 Науменко Николай Александрович Method of extraction of rare-earth metals from their mixtures
FR2767490B1 (en) * 1997-08-25 1999-10-01 Commissariat Energie Atomique PROCESS FOR SEPARATING ACTINIDES AND LANTHANIDES BY LIQUID-LIQUID EXTRACTION USING CALIXARENES
FR2767491B1 (en) * 1997-08-25 1999-10-01 Commissariat Energie Atomique PROCESS FOR SEPARATING ACTINIDES AND LANTHANIDES BY MEMBRANE TRANSPORT USING CALIXARENE
RU2319666C2 (en) * 2006-01-23 2008-03-20 Открытое акционерное общество "Чепецкий механический завод" (ОАО ЧМЗ) Method of extractive separation of rare-earth elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114774690A (en) * 2022-04-06 2022-07-22 南昌航空大学 Method for preparing pure praseodymium and pure neodymium by extracting and separating 2N grade praseodymium neodymium chloride

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