GB831745A - Process for the recovery of dissolved metal values - Google Patents
Process for the recovery of dissolved metal valuesInfo
- Publication number
- GB831745A GB831745A GB24531/57A GB2453157A GB831745A GB 831745 A GB831745 A GB 831745A GB 24531/57 A GB24531/57 A GB 24531/57A GB 2453157 A GB2453157 A GB 2453157A GB 831745 A GB831745 A GB 831745A
- Authority
- GB
- United Kingdom
- Prior art keywords
- matrix
- solution
- metal
- char
- agitated
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/42—Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
-
- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
- C22B3/24—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition by adsorption on solid substances, e.g. by extraction with solid resins
-
- 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
Abstract
Metal values are recovered from aqueous solutions by chemically combining the metal with a substantially water-insoluble chelating agent adsorbed on a solid particulate matrix. Specially suited materials for the matrix are granular activated chars derived from fruit pits or coconut shell, or resins having high absorptive capacity but insignificant ion-exchange activity. Suitable chelating agents include thenoyltrifluoroacetone, 8-hydroxyquinoline, diphenylthio carbazone, dioctyl phosphoric acids, e.g. di-2-ethyl hexyl pyrophosphoric acid, mixtures of mono- and di-octyl orthophosphoric acids, mono-octyl orthophosphoric acid, di-isoamyl pyrophosphoric acid, mixtures of mono- and di-isoamyl orthophosphoric acids, mixtures of mono- and di-2-ethylhexyl orthophosphoric acids, and mixtures of mono- and di-capryl orthophosphoric acids. In one example, an extractive matrix for uranium is prepared by agitating a solution of dioctyl pyrophosphoric acid in ethanol with activated char, and the char is then removed, washed with water and dried in air. In another example an emulsion of di-2-ethylhexyl pyrophosphoric acid in water was agitated with a resin (Duolite S-30), and the resin was then removed, washed, and dried. The prepared matrix is agitated with the aqueous metal-containing medium, in conventional manner such as counter-current or batch, separated, and the matrix now containing the metal is treated with a suitable solvent to remove the chelated metal, and thus regenerate the matrix. By suitable selection of different chelating agents and operating conditions, it is possible to utilize the process to separate the individual metal components of the solution. In an example, a char containing dioctyl pyrophosphoric acid was agitated with a solution containing uranium at a pH of 1.0. The matrix was removed, and the chelated uranium recovered by stripping with a sodium carbonate-bicarbonate solution. Other methods of stripping the metal values from the matrix include washing with a solution of increased hydrogenion concentrations or by washing with a solution containing a complexing agent which forms a more stable compound with the metal, or which can successfully compete for the metal against the chelated form on the matrix. In another example a char containing 8-hydroxyquinoline was agitated with a sulphuric acid solution of cupric copper and nickelous nickel at a pH of 2.3. It is found that when the char is removed, the solution has been freed of copper, and the char is practically free of nickel. The copper may be stripped from the char by washing with a hydrochloric acid solution at pH = 1.ALSO:Metal values are recovered from aqueous solutions by chemically combining the metal with a substantially water-insoluble chelating agent adsorbed on a solid particulate matrix. Specially suited materials for the matrix are granular activated chars derived from fruit pits or coconut shell, or resins having high absorptive capacity but insignificant ion-exchange activity. Suitable chelating agents include thenoyl trifluoroacetone, 8-hydroxyquinoline, Diphenyl thiocarbazone, Diodyl phosphoric acids e.g. di-2-ethyl hexyl pyrophosphoric acid, mixtures of mono and dioctyl orthophosphoric acids, Monsoctyl orthophosphoric acid, mixtures of mono- and di-2-ethyl hexyl orthophosphoric acid, and mixtures of mono- and di-capryl orthophosphoric acids. In one example, an extractive matrix for uranium is prepared by agitating a solution of di-octyl pyrophosphoric acid in ethanol with activated char, removing the char, washing it with water, and drying in air. In another example an emulsion of di-2-ethylhexyl pyrophosphoric acid in water was agitated with a resin (Duolite S-30), the resin was removed, washed and dried. The prepared matrix is agitated with the aqueous metal solution in conventional manner such a countercurrent or batch, separated, and the matrix is then regenerated and the chelated metal removed with a suitable solvent. By suitable selection of different chelating agents and operating conditions it is possible to utilise the process to separate the component metals. In an example, a char containing dioctyl pyrophosphoric acid was agitated with a solution containing uranium at a pH of 1,0. The matrix was regenerated and the uranium recovered by stripping with a sodium carbonate-bicarbonate solution. Other methods of stripping include washing with a solution of increased pH, or with a solution containing a complexing agent which forms a more stable compound with the metal or which can successfully compete for the metal with the chelated form on the matrix. In another example a char containing 8-hydroxyquinoline was agitated with a sulphuric acid solution of cupric and nickelous at a pH of 23. It was found that the solution is freed of copper and that the char is free of nickel. The copper may be stripped from the char by washing with a hydrochloric acid at a pH of 1.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US831745XA | 1956-08-09 | 1956-08-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB831745A true GB831745A (en) | 1960-03-30 |
Family
ID=22176652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24531/57A Expired GB831745A (en) | 1956-08-09 | 1957-08-02 | Process for the recovery of dissolved metal values |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB831745A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4033764A (en) * | 1974-05-21 | 1977-07-05 | Laporte Industries Limited | Recovery of metals |
EP0047978A2 (en) * | 1980-09-12 | 1982-03-24 | Hitachi, Ltd. | Method for treating a radioactive waste liquid |
EP0059623A1 (en) * | 1981-02-27 | 1982-09-08 | Hitachi, Ltd. | A method of purifying liquid using oxine-impregnated activated charcoal and apparatus therefor |
GB2173492A (en) * | 1985-04-12 | 1986-10-15 | Samim Soc Azionaria Minero Met | Process for the separation of indium from acidic solutions |
US4659512A (en) * | 1983-12-21 | 1987-04-21 | Pedro B. Macedo | Fixation of dissolved metal species with a complexing agent |
CN103922507A (en) * | 2014-04-21 | 2014-07-16 | 中蓝连海设计研究院 | Method for treating TDA wastewater through complexing extraction |
-
1957
- 1957-08-02 GB GB24531/57A patent/GB831745A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4033764A (en) * | 1974-05-21 | 1977-07-05 | Laporte Industries Limited | Recovery of metals |
EP0047978A2 (en) * | 1980-09-12 | 1982-03-24 | Hitachi, Ltd. | Method for treating a radioactive waste liquid |
EP0047978A3 (en) * | 1980-09-12 | 1982-06-23 | Hitachi, Ltd. | Method for treating a radioactive waste liquid |
EP0059623A1 (en) * | 1981-02-27 | 1982-09-08 | Hitachi, Ltd. | A method of purifying liquid using oxine-impregnated activated charcoal and apparatus therefor |
US4659512A (en) * | 1983-12-21 | 1987-04-21 | Pedro B. Macedo | Fixation of dissolved metal species with a complexing agent |
GB2173492A (en) * | 1985-04-12 | 1986-10-15 | Samim Soc Azionaria Minero Met | Process for the separation of indium from acidic solutions |
FR2580187A1 (en) * | 1985-04-12 | 1986-10-17 | Samim Soc Azionaria Minero Met | PROCESS FOR SEPARATING INDIUM FROM ACID SOLUTIONS CONTAINING IT |
CN103922507A (en) * | 2014-04-21 | 2014-07-16 | 中蓝连海设计研究院 | Method for treating TDA wastewater through complexing extraction |
CN103922507B (en) * | 2014-04-21 | 2015-12-09 | 中蓝连海设计研究院 | A kind of method adopting complexometric extraction process TDA waste water |
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