RU2195431C2 - Method of re-extraction of ruthenium from tributyl phosphate - Google Patents
Method of re-extraction of ruthenium from tributyl phosphateInfo
- Publication number
- RU2195431C2 RU2195431C2 RU2000132451/12A RU2000132451A RU2195431C2 RU 2195431 C2 RU2195431 C2 RU 2195431C2 RU 2000132451/12 A RU2000132451/12 A RU 2000132451/12A RU 2000132451 A RU2000132451 A RU 2000132451A RU 2195431 C2 RU2195431 C2 RU 2195431C2
- Authority
- RU
- Russia
- Prior art keywords
- ruthenium
- extraction
- solution
- nickel
- copper
- Prior art date
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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
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- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Изобретение относится к химико-металлургическому производству металлов платиновой группы. The invention relates to the chemical and metallurgical production of platinum group metals.
Технологический процесс экстракционного извлечения рутения из водных растворов включает операции: экстракцию рутения раствором ТБФ (три-н-бутилфосфатом) в керосине и реэкстракцию. The technological process of extraction extraction of ruthenium from aqueous solutions includes the following operations: extraction of ruthenium with a solution of TBP (tri-n-butyl phosphate) in kerosene and reextraction.
По известному способу при экстракции нитрозосоединений рутения раствором ТБФ в керосине реэкстракцию осуществляют 15 N азотной кислотой (Звягинцев О. Е. и др. Химия рутения. М.: Наука, 1965, с.275). According to the known method, during the extraction of ruthenium nitroso compounds with a TBP solution in kerosene, reextraction is carried out with 15 N nitric acid (O. Zvyagintsev et al. Ruthenium chemistry. M .: Nauka, 1965, p.275).
Недостатком применения прототипного способа в производстве металлов платиновой группы является сложность очистки реэкстракта при дальнейшем аффинаже рутения. The disadvantage of using the prototype method in the production of platinum group metals is the difficulty of cleaning the reextract with further refining of ruthenium.
Техническим результатом, на достижение которого направлено предлагаемое изобретение, является повышение эффективности очистки реэкстракта рутения от примесей. The technical result, the achievement of which the present invention is directed, is to increase the efficiency of cleaning impurities of a ruthenium reextract.
Технический результат достигается тем, что в качестве реэкстрагента используют раствор каустической соды, а поскольку в экстракте, наряду с рутением, присутствуют медь и никель, которые при контакте со щелочным водным раствором образуют нерастворимые соединения, органический раствор перед реэкстракцией промывают раствором соляной кислоты для удаления указанных металлов. Концентрация соляной кислоты, число ступеней промывки и отношение объемов фаз при проведении данной операции зависят от состава исходного раствора. Промывной раствор направляют на головные операции подготовки растворов к экстракции совместно с исходными растворами, а из реэкстракта извлекают рутений известными способами. The technical result is achieved by using a solution of caustic soda as a stripping agent, and since the extract contains, along with ruthenium, copper and nickel, which form insoluble compounds upon contact with an alkaline aqueous solution, the organic solution is washed with a hydrochloric acid solution before stripping to remove these metals. The concentration of hydrochloric acid, the number of washing steps and the ratio of phase volumes during this operation depend on the composition of the initial solution. The washing solution is sent to the head operations of preparing the solutions for extraction together with the initial solutions, and ruthenium is extracted from the reextract by known methods.
Пример осуществления процесса. An example implementation of the process.
Экстракт, содержащий рутений, медь и никель, промыли 2 раза раствором соляной кислоты, содержащей 70 г/л HCl, при отношении объема органической фазы к водной 10:1, промытый экстракт реэкстрагировали 2 раза раствором каустической соды, содержащим 100 г/л NaOH, при отношении объема органической фазы к водной 10:1. Исходный экстракт и продукты опыта анализировали рентгеноспектральным методом. При проведении всех операций выпадения твердых осадков в органическом и водном растворах, а также на границе раздела фаз, не наблюдалось. The extract containing ruthenium, copper and nickel was washed 2 times with a solution of hydrochloric acid containing 70 g / l HCl, with a ratio of the volume of the organic phase to aqueous 10: 1, the washed extract was re-extracted 2 times with a solution of caustic soda containing 100 g / l NaOH, when the ratio of the volume of the organic phase to the aqueous 10: 1. The initial extract and experimental products were analyzed by X-ray spectral method. During all operations, precipitation of solid precipitates in organic and aqueous solutions, as well as at the interface, was not observed.
Результаты опытов приведены в таблице. The results of the experiments are shown in the table.
Как видно из приведенных данных, при промывке достигается высокое извлечение меди и никеля, а при реэкстракции - рутения. Переработка полученных продуктов известными способами не вызывает затруднений. As can be seen from the above data, a high recovery of copper and nickel is achieved by washing, and ruthenium by extraction. Processing of the obtained products by known methods does not cause difficulties.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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RU2000132451/12A RU2195431C2 (en) | 2000-12-25 | 2000-12-25 | Method of re-extraction of ruthenium from tributyl phosphate |
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RU2000132451/12A RU2195431C2 (en) | 2000-12-25 | 2000-12-25 | Method of re-extraction of ruthenium from tributyl phosphate |
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RU2195431C2 true RU2195431C2 (en) | 2002-12-27 |
RU2000132451A RU2000132451A (en) | 2003-01-27 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2540163C1 (en) * | 2013-09-05 | 2015-02-10 | Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" (ОАО "Красцветмет") | Ruthenium extraction method |
RU2580414C1 (en) * | 2012-03-05 | 2016-04-10 | Саншайн Кайди Нью Энерджи Груп Ко., Лтд. | Method for producing solid ruthenium nitrosyl nitrate using spent catalyst containing ruthenium |
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2000
- 2000-12-25 RU RU2000132451/12A patent/RU2195431C2/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
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ЗВЯГИНЦЕВ О.Е. и др. Химия рутения. - М.: Наука, 1965, с.275. * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2580414C1 (en) * | 2012-03-05 | 2016-04-10 | Саншайн Кайди Нью Энерджи Груп Ко., Лтд. | Method for producing solid ruthenium nitrosyl nitrate using spent catalyst containing ruthenium |
RU2540163C1 (en) * | 2013-09-05 | 2015-02-10 | Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" (ОАО "Красцветмет") | Ruthenium extraction method |
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Effective date: 20191226 |