RU2009149404A - METHOD FOR EXTRACTION PROCESSING OF REGENERATED URANIUM (OPTIONS) - Google Patents
METHOD FOR EXTRACTION PROCESSING OF REGENERATED URANIUM (OPTIONS) Download PDFInfo
- Publication number
- RU2009149404A RU2009149404A RU2009149404/02A RU2009149404A RU2009149404A RU 2009149404 A RU2009149404 A RU 2009149404A RU 2009149404/02 A RU2009149404/02 A RU 2009149404/02A RU 2009149404 A RU2009149404 A RU 2009149404A RU 2009149404 A RU2009149404 A RU 2009149404A
- Authority
- RU
- Russia
- Prior art keywords
- uranium
- extract
- washing
- extraction
- technetium
- Prior art date
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- 229910052770 Uranium Inorganic materials 0.000 title claims abstract 27
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract 27
- 238000000605 extraction Methods 0.000 title claims abstract 18
- 238000005406 washing Methods 0.000 claims abstract 17
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract 12
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract 12
- 229910052713 technetium Inorganic materials 0.000 claims abstract 12
- GKLVYJBZJHMRIY-UHFFFAOYSA-N technetium atom Chemical compound [Tc] GKLVYJBZJHMRIY-UHFFFAOYSA-N 0.000 claims abstract 12
- 238000000034 method Methods 0.000 claims abstract 10
- XEVRDFDBXJMZFG-UHFFFAOYSA-N carbonyl dihydrazine Chemical compound NNC(=O)NN XEVRDFDBXJMZFG-UHFFFAOYSA-N 0.000 claims abstract 7
- 239000008346 aqueous phase Substances 0.000 claims abstract 4
- 239000003085 diluting agent Substances 0.000 claims abstract 4
- 239000012074 organic phase Substances 0.000 claims abstract 4
- 238000000746 purification Methods 0.000 claims abstract 4
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims abstract 4
- AAORDHMTTHGXCV-UHFFFAOYSA-N uranium(6+) Chemical compound [U+6] AAORDHMTTHGXCV-UHFFFAOYSA-N 0.000 claims abstract 4
- 230000003750 conditioning effect Effects 0.000 claims abstract 2
- 239000010857 liquid radioactive waste Substances 0.000 claims abstract 2
- 210000004243 sweat Anatomy 0.000 claims abstract 2
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
Landscapes
- Extraction Or Liquid Replacement (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
1. Способ экстракционной переработки регенерированного урана, включающий экстракцию урана (VI) трибутилфосфатом в органическом разбавителе, промывку экстракта азотно-кислым раствором и реэкстракцию урана, отличающийся тем, что очистку экстракта урана от технеция путем перевода технеция в неэкстрагируемое состояние осуществляют азотнокислым раствором карбогидразида в ступенях экстракционного каскада, предназначенных для промывки экстракта урана, содержащего технеций. ! 2. Способ по п.1, отличающийся тем, что промывку экстракта урана проводят раствором, содержащим 0,1-0,2 моль/л карбогидразида и 0,05-0,15 моль/л азотной кислоты. ! 3. Способ по п.1, отличающийся тем, что промывку экстракта урана проводят при соотношении потоков органической и водной фаз в промывной зоне равном 10-15. ! 4. Способ по п.1, отличающийся тем, что отработавший промывной раствор направляют в питающую ступень экстракционного каскада. ! 5. Способ экстракционной переработки регенерированного урана, включающий экстракцию урана (VI) трибутилфосфатом в органическом разбавителе, промывку экстракта азотно-кислым раствором и реэкстракцию урана, отличающийся тем, что очистку экстракта урана от технеция путем перевода технеция в неэкстрагируемое состояние осуществляют азотно-кислым раствором карбогидразида в ступенях экстракционного каскада, предназначенных для промывки экстракта урана, содержащего технеций, отработавший промывной раствор контактируют в противотоке с потоком свежего экстрагента для извлечения урана и далее направляют на операцию кондиционирования жидких радиоактивных отходов, полученный экстракт подсоединяют к исходному экстр� 1. A method of extraction processing of regenerated uranium, including extraction of uranium (VI) with tributyl phosphate in an organic diluent, washing the extract with a nitric acid solution and re-extraction of uranium, characterized in that the purification of the uranium extract from technetium by transferring technetium to an unextractable state is carried out with a nitric acid solution of carbohydrazide in a step extraction cascade designed to flush uranium extract containing technetium. ! 2. The method according to claim 1, characterized in that the washing of the uranium extract is carried out with a solution containing 0.1-0.2 mol / l of carbohydrazide and 0.05-0.15 mol / l of nitric acid. ! 3. The method according to claim 1, characterized in that the washing of the uranium extract is carried out at a ratio of flows of organic and aqueous phases in the washing zone equal to 10-15. ! 4. The method according to claim 1, characterized in that the spent wash solution is sent to the feed stage of the extraction cascade. ! 5. A method of extraction processing of regenerated uranium, including extraction of uranium (VI) with tributyl phosphate in an organic diluent, washing the extract with a nitric acid solution and reextracting uranium, characterized in that the purification of the uranium extract from technetium by converting technetium to an unextractable state is carried out with a nitric acid solution of carbohydrazide in the steps of the extraction cascade intended for washing the uranium extract containing technetium, the spent washing solution is contacted in countercurrent with sweat com of fresh extractant for uranium extraction and then sent to the operation of conditioning liquid radioactive waste, the resulting extract is connected to the original ext
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2009149404/02A RU2430175C1 (en) | 2009-12-29 | 2009-12-29 | Processing method of nitric-acid solution of regenerated uranium with removal of technetium (versions) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2009149404/02A RU2430175C1 (en) | 2009-12-29 | 2009-12-29 | Processing method of nitric-acid solution of regenerated uranium with removal of technetium (versions) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2009149404A true RU2009149404A (en) | 2011-07-10 |
| RU2430175C1 RU2430175C1 (en) | 2011-09-27 |
Family
ID=44740032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2009149404/02A RU2430175C1 (en) | 2009-12-29 | 2009-12-29 | Processing method of nitric-acid solution of regenerated uranium with removal of technetium (versions) |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2430175C1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2447523C2 (en) * | 2010-06-11 | 2012-04-10 | Открытое акционерное общество "Сибирский химический комбинат" | Method for treatment of reprocessed uranium |
| RU2490210C1 (en) * | 2011-12-20 | 2013-08-20 | Открытое акционерное общество "Высокотехнологический научно-исследовательский институт неорганических материалов имени академика А.А. Бочвара" | Method of processing nitrate solution of recovered uranium combined with removal of technetium |
| RU2657272C1 (en) * | 2017-05-16 | 2018-06-09 | Федеральное Государственное Унитарное Предприятие "Горно - Химический Комбинат" (Фгуп "Гхк") | Method for purification of nitric acid-acinoid-containing solutions from silver |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4443413A (en) * | 1983-08-31 | 1984-04-17 | The United States Of America As Represented By The United States Department Of Energy | Separation of uranium from technetium in recovery of spent nuclear fuel |
| US4528165A (en) * | 1984-06-13 | 1985-07-09 | The United States Of America As Represented By The United States Department Of Energy | Separation of uranium from technetium in recovery of spent nuclear fuel |
| FR2607823B1 (en) * | 1986-12-03 | 1989-02-17 | Commissariat Energie Atomique | PROCESS FOR SEPARATING TECHNETIUM FROM AN ORGANIC SOLVENT WITH ZIRCONIUM AND AT LEAST ANOTHER METAL SUCH AS URANIUM OR PLUTONIUM, ESPECIALLY USEFUL FOR THE TREATMENT OF IRRADIATED NUCLEAR FUELS |
| DE3809042A1 (en) * | 1988-03-18 | 1989-09-28 | Wiederaufarbeitung Von Kernbre | METHOD AND DEVICE FOR SEPARATING URANE, PLUTONIUM AND SPLIT PRODUCTS |
| FR2717001B1 (en) * | 1994-03-04 | 1996-05-24 | Japan Atomic Energy Res Inst | Process for decontamination of technetium in the reprocessing of spent nuclear fuel. |
| RU2373155C2 (en) * | 2007-10-01 | 2009-11-20 | Открытое акционерное общество "Сибирский химический комбинат"(ОАО "СХК") | Method of extractant purification of regenerated uranium |
-
2009
- 2009-12-29 RU RU2009149404/02A patent/RU2430175C1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| RU2430175C1 (en) | 2011-09-27 |
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| MZ4A | Patent is void |
Effective date: 20200819 |