FR2376215A1 - Extn. of uranium in situ from its ores - by oxidn. and leaching with oxygen enriched water under carbon di:oxide pressure and alkaline earth (bi)carbonate soln. - Google Patents
Extn. of uranium in situ from its ores - by oxidn. and leaching with oxygen enriched water under carbon di:oxide pressure and alkaline earth (bi)carbonate soln.Info
- Publication number
- FR2376215A1 FR2376215A1 FR7639807A FR7639807A FR2376215A1 FR 2376215 A1 FR2376215 A1 FR 2376215A1 FR 7639807 A FR7639807 A FR 7639807A FR 7639807 A FR7639807 A FR 7639807A FR 2376215 A1 FR2376215 A1 FR 2376215A1
- Authority
- FR
- France
- Prior art keywords
- soln
- leaching
- situ
- alkaline earth
- pressure
- 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
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G43/00—Compounds of uranium
- C01G43/006—Compounds containing, besides uranium, two or more other elements, with the exception of oxygen or hydrogen
-
- 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
- C22B60/0221—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes by leaching
- C22B60/0247—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes by leaching using basic solutions or liquors
-
- 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
- C22B60/0265—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes treatment or purification of solutions or of liquors or of slurries extraction by solid resins
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Uranium is extracted in situ from the ore deposit (or after ore mining and crushing) by a combination of oxidn. and leaching with O-enriched water under CO2 press. and alkaline earth carbonate or bicarbonate soln. The alkaline earth metals are either Ca or Mg. The CO2 pressure is reduced to 4 bar after the U has been oxidised and dissolved. This pressure is maintained and the CO2 released by the redn. in pressure is recovered for further use. The pressure is finally reduced to atmospheric press. and the soln. degassed by a vacuum treatment. The liq. is then treated with CaOH at pH 10-12 so that Ca uranate and CaCO3 ppte. are formed which are recovered. Process required adaption to the local conditions and there are therefore a number of variations and adjustments required, e.g. to restore the pH of the underground water alkaline earth hydroxide solns. are pumped into the bore holes. The Ca uranate may be treated with H2O2 in order to produce U peroxide which is recovered. The H2O2 treatment may also be used as a second leaching in situ operations. The U may also be recovered by ion exchange. In laboratory experiments a U recovery of up to 92% was obtd. The ore is oxidised in situ to produce a soluble phase, i.e. the method is much less expensive than a mining operation. The former (NH4)2CO3 process for the extn. left NH3 in the underground water and presented a serious pollution hazard. There is no pollution risk involved in the present process, and no ion exchange reaction takes place between Ca2+ and NH3+ ions as in prior art where Ca level of the leaching soln. was increased. When the soln. ascended from underground redn. of hydrostatic pressure caused released of CO2, so that the pH of the soln. increased thus precipitating CaCO3 which clogged the pipes.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7639807A FR2376215A1 (en) | 1976-12-28 | 1976-12-28 | Extn. of uranium in situ from its ores - by oxidn. and leaching with oxygen enriched water under carbon di:oxide pressure and alkaline earth (bi)carbonate soln. |
ZA00777280A ZA777280B (en) | 1976-12-28 | 1977-12-06 | Process for extracting uranium from its ores by using alkaline earth carbonates and bicarbonates solunons in the presence of carbon dioxide |
CA293,658A CA1113725A (en) | 1976-12-28 | 1977-12-21 | Process for extracting uranium from its ores by using alkaline earth carbonates and bicarbonates solutions in the presence of carbon dioxide |
DE19772757208 DE2757208A1 (en) | 1976-12-28 | 1977-12-22 | Extn. of uranium in situ from its ores - by oxidn. and leaching with oxygen enriched water under carbon di:oxide pressure and alkaline earth (bi)carbonate soln. |
OA56356A OA05838A (en) | 1976-12-28 | 1977-12-24 | Uranium extraction process. |
PT67463A PT67463B (en) | 1976-12-28 | 1977-12-27 | Process for the extraction of uranium from its ores |
AT0935477A AT363257B (en) | 1976-12-28 | 1977-12-28 | METHOD FOR OBTAINING URANE FROM ITS ORES |
ES465535A ES465535A1 (en) | 1976-12-28 | 1977-12-28 | Extn. of uranium in situ from its ores - by oxidn. and leaching with oxygen enriched water under carbon di:oxide pressure and alkaline earth (bi)carbonate soln. |
AU32047/77A AU520446B2 (en) | 1976-12-28 | 1977-12-29 | Extracting uranium from its ores |
MX10088778U MX5887E (en) | 1976-12-28 | 1978-01-02 | IMPROVED METHOD FOR THE EXTRACTION OF URANIUM FROM MINERALS THAT CONTAIN IT |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7639807A FR2376215A1 (en) | 1976-12-28 | 1976-12-28 | Extn. of uranium in situ from its ores - by oxidn. and leaching with oxygen enriched water under carbon di:oxide pressure and alkaline earth (bi)carbonate soln. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2376215A1 true FR2376215A1 (en) | 1978-07-28 |
FR2376215B1 FR2376215B1 (en) | 1981-10-23 |
Family
ID=9181849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7639807A Granted FR2376215A1 (en) | 1976-12-28 | 1976-12-28 | Extn. of uranium in situ from its ores - by oxidn. and leaching with oxygen enriched water under carbon di:oxide pressure and alkaline earth (bi)carbonate soln. |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA1113725A (en) |
FR (1) | FR2376215A1 (en) |
ZA (1) | ZA777280B (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2460277A1 (en) * | 1979-07-04 | 1981-01-23 | Cogema | Uranium concentrate recovery from alkaline leach liquor - by neutralising to remove carbonate and adding lime to ppte. uranium |
RU2458164C1 (en) * | 2011-05-31 | 2012-08-10 | Открытое акционерное общество "Ведущий научно-исследовательский институт химической технологии" | Method of ion-exchange uranium extraction from sulfuric solutions and pulps |
US20130101470A1 (en) * | 2010-06-16 | 2013-04-25 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Reaction Chamber for Exothermic Material |
RU2489510C2 (en) * | 2011-06-08 | 2013-08-10 | Закрытое акционерное общество "Далур" | Extraction method of natural uranium concentrate from sulphuric acid solutions of underground leaching, and plant for its implementation |
RU2516025C2 (en) * | 2011-07-29 | 2014-05-20 | Ром Энд Хаас Компани | Method of extracting uranium from mother liquors |
RU2536312C1 (en) * | 2013-11-19 | 2014-12-20 | Федеральное государственное унитарное предприятие "Научно-исследовательский институт Научно-производственное объединение "ЛУЧ" (ФГУП "НИИ НПО "ЛУЧ") | Method of extracting uranium from phosphate solutions |
RU2579326C2 (en) * | 2010-11-24 | 2016-04-10 | Ром Энд Хаас Компани | Method for extracting uranium from mother liquor |
RU2618293C1 (en) * | 2016-01-11 | 2017-05-03 | Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Method for uranium extraction from diluted solutions and natural waters |
RU2627078C1 (en) * | 2016-11-08 | 2017-08-03 | Акционерное общество "Ведущий научно-исследовательский институт химической технологии" | Uranium sorptive extraction method from sulphuric acid solutions and pulps |
RU2646297C1 (en) * | 2016-08-30 | 2018-03-02 | Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" (УрФУ) | Method for obtaining of sorbent for uranium extraction from underground water |
-
1976
- 1976-12-28 FR FR7639807A patent/FR2376215A1/en active Granted
-
1977
- 1977-12-06 ZA ZA00777280A patent/ZA777280B/en unknown
- 1977-12-21 CA CA293,658A patent/CA1113725A/en not_active Expired
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2460277A1 (en) * | 1979-07-04 | 1981-01-23 | Cogema | Uranium concentrate recovery from alkaline leach liquor - by neutralising to remove carbonate and adding lime to ppte. uranium |
US20130101470A1 (en) * | 2010-06-16 | 2013-04-25 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Reaction Chamber for Exothermic Material |
JP2013535008A (en) * | 2010-06-16 | 2013-09-09 | コミシリア ア レネルジ アトミック エ オ エナジーズ オルタネティヴズ | Reaction chamber for exothermic materials |
US9533816B2 (en) * | 2010-06-16 | 2017-01-03 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Reaction chamber for exothermic material |
RU2579326C2 (en) * | 2010-11-24 | 2016-04-10 | Ром Энд Хаас Компани | Method for extracting uranium from mother liquor |
RU2458164C1 (en) * | 2011-05-31 | 2012-08-10 | Открытое акционерное общество "Ведущий научно-исследовательский институт химической технологии" | Method of ion-exchange uranium extraction from sulfuric solutions and pulps |
RU2489510C2 (en) * | 2011-06-08 | 2013-08-10 | Закрытое акционерное общество "Далур" | Extraction method of natural uranium concentrate from sulphuric acid solutions of underground leaching, and plant for its implementation |
RU2516025C2 (en) * | 2011-07-29 | 2014-05-20 | Ром Энд Хаас Компани | Method of extracting uranium from mother liquors |
RU2536312C1 (en) * | 2013-11-19 | 2014-12-20 | Федеральное государственное унитарное предприятие "Научно-исследовательский институт Научно-производственное объединение "ЛУЧ" (ФГУП "НИИ НПО "ЛУЧ") | Method of extracting uranium from phosphate solutions |
RU2618293C1 (en) * | 2016-01-11 | 2017-05-03 | Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Method for uranium extraction from diluted solutions and natural waters |
RU2646297C1 (en) * | 2016-08-30 | 2018-03-02 | Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" (УрФУ) | Method for obtaining of sorbent for uranium extraction from underground water |
RU2627078C1 (en) * | 2016-11-08 | 2017-08-03 | Акционерное общество "Ведущий научно-исследовательский институт химической технологии" | Uranium sorptive extraction method from sulphuric acid solutions and pulps |
Also Published As
Publication number | Publication date |
---|---|
ZA777280B (en) | 1978-10-25 |
CA1113725A (en) | 1981-12-08 |
FR2376215B1 (en) | 1981-10-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse | ||
AR | Application made for restoration | ||
DI | Inadmissibility of an action of restoration |