FR2435444A1 - PROCESS FOR THE RECOVERY OF URANIUM CONTAINED IN PHOSPHATE COMPOUNDS - Google Patents
PROCESS FOR THE RECOVERY OF URANIUM CONTAINED IN PHOSPHATE COMPOUNDSInfo
- Publication number
- FR2435444A1 FR2435444A1 FR7825815A FR7825815A FR2435444A1 FR 2435444 A1 FR2435444 A1 FR 2435444A1 FR 7825815 A FR7825815 A FR 7825815A FR 7825815 A FR7825815 A FR 7825815A FR 2435444 A1 FR2435444 A1 FR 2435444A1
- Authority
- FR
- France
- Prior art keywords
- dialkyl
- pyrophosphoric acid
- uranium
- organic phase
- ammonium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
- C22B60/02—Obtaining thorium, uranium, or other actinides
- C22B60/0204—Obtaining thorium, uranium, or other actinides obtaining uranium
- C22B60/0217—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes
- C22B60/0252—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes treatment or purification of solutions or of liquors or of slurries
- C22B60/026—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes treatment or purification of solutions or of liquors or of slurries liquid-liquid extraction with or without dissolution in organic solvents
Landscapes
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
1. A process for recovering the uranium present in phosphate compounds by means of an organic phase containing a dialkyl-pyrophosphoric acid, characterized in that said organic phase also contains at least one mol of a solubilising agent for uranium ammonium dialkyl-pyrophosphate per mol of dialkyl-pyrophosphoric acid, and in that the process comprises the following steps, carried out at a temperature not exceeding 50 degrees C : a) bubbling anhydrous ammonia gas into the organic phase already charged with uranium, to precipitate the ammonium salt of the excess dialkyl-pyrophosphoric acid ; and, b) effecting a liquid-solid separation to separate from the organic phase the ammonium salt of the dialkyl-pyrophosphoric acid precipitated in the course of the previous step a), said solubilising agent for the uranium ammonium dialkyl-pyrophosphate being a liposoluble compound which possesses electron pairs capable of forming hydrogen bonds with the pyrophosphoric acid diesters.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7825815A FR2435444A1 (en) | 1978-09-08 | 1978-09-08 | PROCESS FOR THE RECOVERY OF URANIUM CONTAINED IN PHOSPHATE COMPOUNDS |
US06/017,164 US4311676A (en) | 1978-09-08 | 1979-03-02 | Process for the recovery of uranium contained in phosphated compounds |
AT79400627T ATE4794T1 (en) | 1978-09-08 | 1979-09-07 | PROCESS FOR RECOVERING URANIUM CONTAINED IN PHOSPHATE COMPOUNDS. |
DE7979400627T DE2966225D1 (en) | 1978-09-08 | 1979-09-07 | Process for the recuperation of uranium present in phosphatic compounds |
EP79400627A EP0011516B1 (en) | 1978-09-08 | 1979-09-07 | Process for the recuperation of uranium present in phosphatic compounds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7825815A FR2435444A1 (en) | 1978-09-08 | 1978-09-08 | PROCESS FOR THE RECOVERY OF URANIUM CONTAINED IN PHOSPHATE COMPOUNDS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2435444A1 true FR2435444A1 (en) | 1980-04-04 |
FR2435444B1 FR2435444B1 (en) | 1981-01-16 |
Family
ID=9212434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7825815A Granted FR2435444A1 (en) | 1978-09-08 | 1978-09-08 | PROCESS FOR THE RECOVERY OF URANIUM CONTAINED IN PHOSPHATE COMPOUNDS |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0011516B1 (en) |
AT (1) | ATE4794T1 (en) |
DE (1) | DE2966225D1 (en) |
FR (1) | FR2435444A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0059592A1 (en) * | 1981-02-26 | 1982-09-08 | Prodeco, Inc. | Process for recovering uranium |
FR2531697A1 (en) * | 1982-08-12 | 1984-02-17 | Pechiney Ugine Kuhlmann Uran | PROCESS FOR THE VALORISATION OF URANIUM AND RARE EARTHS IN UF4 IMPUR FROM EXTRACTION OF URANIUM FROM PHOSPHORIC ACID |
US4490336A (en) * | 1981-05-27 | 1984-12-25 | Prodeco, Inc. | Process for stripping uranium from an alkyl pyrophosphoric acid |
US4652431A (en) * | 1981-02-26 | 1987-03-24 | Prodeco, Inc. | Process for recovering uranium using an alkyl pyrophosphoric acid and alkaline stripping solution |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3311245A1 (en) * | 1983-03-28 | 1984-10-04 | Chemische Fabrik Budenheim Rudolf A. Oetker, 6501 Budenheim | Method of separating uranium from phosphoric acids |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2830872A (en) * | 1952-10-03 | 1958-04-15 | Robert F Mccullough | Recovery of uranium values from phosphate rock |
US2866680A (en) * | 1955-03-02 | 1958-12-30 | Ray S Long | Alkyl pyrophosphate metal solvent extractants and process |
US2883123A (en) * | 1955-08-11 | 1959-04-21 | Joseph C Finnigan | Safety apparatus for use on a motor vehicle |
-
1978
- 1978-09-08 FR FR7825815A patent/FR2435444A1/en active Granted
-
1979
- 1979-09-07 EP EP79400627A patent/EP0011516B1/en not_active Expired
- 1979-09-07 AT AT79400627T patent/ATE4794T1/en not_active IP Right Cessation
- 1979-09-07 DE DE7979400627T patent/DE2966225D1/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2830872A (en) * | 1952-10-03 | 1958-04-15 | Robert F Mccullough | Recovery of uranium values from phosphate rock |
US2866680A (en) * | 1955-03-02 | 1958-12-30 | Ray S Long | Alkyl pyrophosphate metal solvent extractants and process |
US2883123A (en) * | 1955-08-11 | 1959-04-21 | Joseph C Finnigan | Safety apparatus for use on a motor vehicle |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0059592A1 (en) * | 1981-02-26 | 1982-09-08 | Prodeco, Inc. | Process for recovering uranium |
US4652431A (en) * | 1981-02-26 | 1987-03-24 | Prodeco, Inc. | Process for recovering uranium using an alkyl pyrophosphoric acid and alkaline stripping solution |
US4652432A (en) * | 1981-02-26 | 1987-03-24 | Prodeco, Inc. | Process for recovering uranium using an alkyl pyrophosphoric acid and alkaline stripping solution |
US4490336A (en) * | 1981-05-27 | 1984-12-25 | Prodeco, Inc. | Process for stripping uranium from an alkyl pyrophosphoric acid |
FR2531697A1 (en) * | 1982-08-12 | 1984-02-17 | Pechiney Ugine Kuhlmann Uran | PROCESS FOR THE VALORISATION OF URANIUM AND RARE EARTHS IN UF4 IMPUR FROM EXTRACTION OF URANIUM FROM PHOSPHORIC ACID |
EP0101394A1 (en) * | 1982-08-12 | 1984-02-22 | Uranium Pechiney | Process for valorizing uranium and rare earths contained in impure UF4 obtained at the uranium extraction from phosphoric acid |
Also Published As
Publication number | Publication date |
---|---|
FR2435444B1 (en) | 1981-01-16 |
EP0011516A1 (en) | 1980-05-28 |
EP0011516B1 (en) | 1983-09-28 |
ATE4794T1 (en) | 1983-10-15 |
DE2966225D1 (en) | 1983-11-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Knoth et al. | Chemistry of boranes—II: Decaborane derivatives based on the B10H12 structural unit | |
EP0337712A3 (en) | Method of production of high purity silica and ammonium fluoride | |
FR2435444A1 (en) | PROCESS FOR THE RECOVERY OF URANIUM CONTAINED IN PHOSPHATE COMPOUNDS | |
MA18654A1 (en) | PROCESS FOR THE RECOVERY OF URANIUM FROM PHOSPHORIC ACID SOLUTIONS | |
FI62038B (en) | FOERFARANDE FOER FRAMSTAELLNING AV FLUORVAETE UR AMMONIUMFLUORID | |
GB1473245A (en) | Purification of plasminogen | |
UST970007I4 (en) | Uranium recovery from wet-process phosphoric acid | |
GB1353866A (en) | Process for removing lactams | |
FI58767C (en) | FOERFARANDE FOER FRAMSTAELLNING AV RENAD FOSFORSYRA | |
US4287165A (en) | Preparation of high purity phosphorus | |
JPS60251109A (en) | Manufacture of lithium hexafluorophosphate | |
ES8406376A1 (en) | Process for the purification of wet-process phosphoric acid. | |
MA19328A1 (en) | PROCESS FOR THE RECOVERY OF URANIUM (VI) FROM PHOSPHORIC ACID SOLUTIONS. | |
BE884401A (en) | IMPROVEMENT IN THE PROCESS FOR THE RECOVERY OF URANIUM FROM AN IMPURE PHOSPHORIC ACID | |
ES475058A1 (en) | Method of purifying ammonium fluoride solutions. | |
US4276235A (en) | Method for purifying bidentate organophosphorous compounds | |
Herber | Isotopic Exchange Reactions. IV. Evidence for the Tetrachloroborate Anion from Kinetic Studies1 | |
Watanabe et al. | The synthesis and decomposition of calcium bis (hydrogenphosphoramidate). | |
GB1441078A (en) | Process and apparatus for the dearsenication of polyphosphoric acid | |
GB1397289A (en) | Process for the recovery of lactam | |
ES8702509A1 (en) | Method to maintain a high Fe+2/Fe+3 ratio in the stripping system for the recovery of uranium from wet process phosphoric acid | |
US3573029A (en) | Separation of ammonium phosphate from nitrophosphate product mixtures | |
GB1210694A (en) | Phosphoric acid purification | |
GB1247365A (en) | Continuous nitrophosphate fertilizer process | |
JPS5494498A (en) | Manufacture of high purity phosphates |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |