SU1636337A1 - Method of extraction of rare-earth metals from apatite - Google Patents

Method of extraction of rare-earth metals from apatite Download PDF

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Publication number
SU1636337A1
SU1636337A1 SU894702987A SU4702987A SU1636337A1 SU 1636337 A1 SU1636337 A1 SU 1636337A1 SU 894702987 A SU894702987 A SU 894702987A SU 4702987 A SU4702987 A SU 4702987A SU 1636337 A1 SU1636337 A1 SU 1636337A1
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SU
USSR - Soviet Union
Prior art keywords
apatite
extraction
rare
ree
phosphoric acid
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Application number
SU894702987A
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Russian (ru)
Inventor
Галина Владимировна Зимина
Татьяна Николаевна Глубокова
Людмила Александровна Садохина
Татьяна Ивановна Кузина
Петр Петрович Мельников
Лидия Николаевна Комиссарова
Галина Яковлевна Пушкина
Original Assignee
Московский институт тонкой химической технологии им.М.В.Ломоносова
МГУ им.М.В.Ломоносова
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Priority to SU894702987A priority Critical patent/SU1636337A1/en
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Publication of SU1636337A1 publication Critical patent/SU1636337A1/en

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Abstract

Изобретение относитс  к гидрометаллургии редких элементов и позвол ет повысить степень извлечени  редкоземельных элементов. Предлагаемый спосоЬ включает разложение апатита фосфорной кислотой при 100°CS отделение ::ерастворившегос  остатка, введение в раствор фосфата кальци  до концентрации 50-55 г/л по СаО с последующим выдерживанием смеси при 90-100°С в течение 0,6-1 ч и отделении РЗЭ-содержащего осадка. Способ позвол ет извлечь 70-75% РЗЭ из фос- форно-кислого раствора на первой стадии переработки апатита по сравнению с 65% по прототипу. 1 табл.This invention relates to the hydrometallurgy of rare elements and makes it possible to increase the degree of extraction of rare earth elements. The proposed method involves the decomposition of apatite with phosphoric acid at 100 ° C CS separation: the solvent residue, the introduction into the calcium phosphate solution to a concentration of 50-55 g / l in CaO, followed by keeping the mixture at 90-100 ° C for 0, 6-1 h and the separation of REE-containing sediment. The method allows to extract 70-75% REE from a phosphoric acid solution at the first stage of apatite processing, compared with 65% of the prototype. 1 tab.

Description

Изобретение относитс  к гидрометаллургии редких элементов, в частности к технологии соединений редкоземельных элементов (РЗЭ), и может быть использовано в цветной металлургии и производстве удобрений.The invention relates to the hydrometallurgy of rare elements, in particular to the technology of compounds of rare earth elements (REE), and can be used in non-ferrous metallurgy and the production of fertilizers.

Целью изобретени   вл етс  повышение степени извлечени  РЗЭ.The aim of the invention is to increase the recovery rate of REE.

Пример 1. 2,50 г апатита раствор ют при кип чении в течение 1 ч в оборотной 32%-ной в соотношении апатит: Н}РО, равном 1:7, отфильтровывают нерастворившийс  остаток . В раствор после охлаждени  его до комнатной температуры добавл ют при перемешивании 8,00 г Саэ(Р04.)2., содержание в растворе СаО 54,7 г/л. Концентраци  РЗЭ в исходном растворе 0,3416- г/л. Полученный раствор нагревают до 90°С и выдерживают при этой температуре в течение 1 ч. Затем отфильтровывают образовавшийс  осадок. Содержание РЗЭ в конечном растворе 0,0854 г/л. Извлечение РЗЭ из раствора составл ет 75%.Example 1. 2.50 g of apatite are dissolved by boiling for 1 hour in a reverse 32% apatite: H} PO ratio of 1: 7, and the insoluble residue is filtered off. After cooling it to room temperature, 8.00 g of Cae (P04.) 2. Is added to the solution with a CaO content of 54.7 g / l. The concentration of REE in the initial solution is 0.3416 g / l. The resulting solution is heated to 90 ° C and maintained at this temperature for 1 hour. The precipitate is then filtered off. The content of REE in the final solution of 0.0854 g / l. Removing the REE from the solution is 75%.

Данные примеров 1-5 приведены в таблице, в которой показано извлечение РЗЭ () в осадок целевого продукта при изменении варьируемых параметров.The data of examples 1-5 are shown in the table, which shows the extraction of REE () in the sediment of the target product when changing the variable parameters.

По сравнению с известным предлагаемый способ позвол ет повысить извлечение Ьп20э в продукт на 5-10%.Compared with the known method, the proposed method allows to increase the extraction of Lp20e into the product by 5-10%.

Claims (1)

Формула изобретени Invention Formula Способ извлечени  редкоземельных элементов из апатита, включающий разложение апатита оборотной фосфорной кислотой в непрерывном режиме, отделение неразложившегос  остатка, введение соединени  кальшш, выдержива- .ние смеси при повышенной температуре ,и отделение осадка, отличаюо со оA method for extracting rare earth elements from apatite, including decomposing apatite with circulating phosphoric acid in a continuous mode, separating the undecomposed residue, introducing a kalsh compound, keeping the mixture at elevated temperature, and separating the precipitate, СО СО CO SO щ и и с   тем, что, с целью повышени  степени извлечени  РЗЭ, в качестве соединени  кальци  используютс  егоu and so that, in order to increase the degree of REE extraction, its calcium compound is used as a calcium compound. фосфат и ввод т его до концентрации 50-55 г/л по.СаО, а вьщержку ведут при 90-100°С в течение 0,6-1 ч.phosphate and injected it to a concentration of 50-55 g / l of CaOO, and the concentration is carried out at 90-100 ° C for 0.6-1 hours.
SU894702987A 1989-02-17 1989-02-17 Method of extraction of rare-earth metals from apatite SU1636337A1 (en)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994013845A1 (en) * 1991-07-01 1994-06-23 Sovmestnoe Rossiisko-Shvedskoe Predpriyatie 'horos' Process for extracting rare-earth elements from phosphate ore
RU2458863C1 (en) * 2011-02-14 2012-08-20 Открытое акционерное общество "Акрон" Method of extracting rare-earth concentrate from apatite

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Авторское свидетельство СССР № 872454, кл. С 01 F 17/00, 1978. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994013845A1 (en) * 1991-07-01 1994-06-23 Sovmestnoe Rossiisko-Shvedskoe Predpriyatie 'horos' Process for extracting rare-earth elements from phosphate ore
RU2458863C1 (en) * 2011-02-14 2012-08-20 Открытое акционерное общество "Акрон" Method of extracting rare-earth concentrate from apatite

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