GB907187A - Liquid-liquid extraction process for the recovery of high purity thorium oxide - Google Patents
Liquid-liquid extraction process for the recovery of high purity thorium oxideInfo
- Publication number
- GB907187A GB907187A GB1700960A GB1700960A GB907187A GB 907187 A GB907187 A GB 907187A GB 1700960 A GB1700960 A GB 1700960A GB 1700960 A GB1700960 A GB 1700960A GB 907187 A GB907187 A GB 907187A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thorium
- solution
- acid
- aqueous
- dibutyl
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/42—Reprocessing of irradiated fuel
- G21C19/44—Reprocessing of irradiated fuel of irradiated solid fuel
- G21C19/46—Aqueous processes, e.g. by using organic extraction means, including the regeneration of these means
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F15/00—Compounds of thorium
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Abstract
<PICT:0907187/III/1> Thorium is recovered from aqueous mineral acid solutions by countercurrent extraction with a solution in an organic solvent of an alkyl phosphate other than dibutyl or tributyl phosphate, the organic solution also containing about 5% by weight of dibutyl or tributyl phosphate, and thereafter stripping the thorium from the organic solution by successive countercurrent extractions with an aqueous sulphuric acid solution and an aqueous alkali metal carbonate solution. The initial thorium solution may be obtained by leaching a thorium ore with a mineral acid, for example hydrochloric acid. The alkyl phosphate may be monoheptadecylorthophoric acid; 2,6,8-trimethyl nonyl orthophosphoric acid-2; monotridecylorthophorphoric acid; or 5-ethylnonylorthophosphoric acid-2. Prior to stripping thorium from the organic solution, impurities may be removed by countercurrent extraction with hydrochloric acid. In a modification, the thorium is extracted with an organic solution of an alkyl phosphate other than dibutyl or tributyl phosphate, the organic solution is then extracted by hydrochloric acid or sodium carbonate solution to remove any uranium, thereafter dibutyl or tributyl phosphate is added to give a concentration of about 5% by weight, after which the thorium is extracted by successive countercurrent extractions with an aqueous solution of sulphruic acid and an aqueous solution of an alkali metal carbonate. The two aqueous solutions, now containing the thorium, may be combined, the pH is appropriately adjusted, the solution is heated, oxalic acid is added, and thorium oxalate precipitates, which may be recovered and calcined to produce thorium oxide. Fig. 4 is a flow diagram of a process according to the invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1700960A GB907187A (en) | 1960-05-13 | 1960-05-13 | Liquid-liquid extraction process for the recovery of high purity thorium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1700960A GB907187A (en) | 1960-05-13 | 1960-05-13 | Liquid-liquid extraction process for the recovery of high purity thorium oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB907187A true GB907187A (en) | 1962-10-03 |
Family
ID=10087587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1700960A Expired GB907187A (en) | 1960-05-13 | 1960-05-13 | Liquid-liquid extraction process for the recovery of high purity thorium oxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB907187A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2013201027B2 (en) * | 2012-12-18 | 2014-09-18 | Changchun Institute Of Applied Chemistry, Chinese Academy Of Sciences | A process of separating and purifying thorium |
-
1960
- 1960-05-13 GB GB1700960A patent/GB907187A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2013201027B2 (en) * | 2012-12-18 | 2014-09-18 | Changchun Institute Of Applied Chemistry, Chinese Academy Of Sciences | A process of separating and purifying thorium |
| US9347116B2 (en) | 2012-12-18 | 2016-05-24 | Changchun Institute Of Applied Chemistry, Chinese Academy Of Sicences | Process of separating and purifying thorium |
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