RO83029B1 - Process for extracting aluminium and copper from spent catalysts - Google Patents
Process for extracting aluminium and copper from spent catalystsInfo
- Publication number
- RO83029B1 RO83029B1 RO10580281A RO10580281A RO83029B1 RO 83029 B1 RO83029 B1 RO 83029B1 RO 10580281 A RO10580281 A RO 10580281A RO 10580281 A RO10580281 A RO 10580281A RO 83029 B1 RO83029 B1 RO 83029B1
- Authority
- RO
- Romania
- Prior art keywords
- copper
- catalyst
- aluminum
- carbonate
- cuproammonium
- Prior art date
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title abstract 8
- 239000010949 copper Substances 0.000 title abstract 7
- 229910052802 copper Inorganic materials 0.000 title abstract 7
- 239000003054 catalyst Substances 0.000 title abstract 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title abstract 4
- 229910052782 aluminium Inorganic materials 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 239000004411 aluminium Substances 0.000 title 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 3
- 239000002253 acid Substances 0.000 abstract 2
- 238000004090 dissolution Methods 0.000 abstract 2
- 238000001556 precipitation Methods 0.000 abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical class Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 230000005587 bubbling Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 235000011167 hydrochloric acid Nutrition 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 238000002386 leaching Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 238000005063 solubilization Methods 0.000 abstract 1
- 230000007928 solubilization Effects 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
Classifications
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Catalysts (AREA)
Abstract
Procedeul de extragere a aluminiului si cuprului din catalizatori uzati, conform inventiei, prevede dezagregarea în amestec cu acizi azotic si clorhidric si precipitarea aluminiului dizolvat cu amoniac, pîna la pH=7...7,5, pentru obtinerea aluminei, care se reutilizeaza ca atare spalarea catalizatorului ramas si lesierea cuprului cu solutie carboamoniacala cu continut de 15...18% NH3 si 8...10% CO2 sub barbotare de aer, pentru solubilizarea cuprului, rezultînd un complex de carbonat cuproamoniacal, care se descompune în continuare termic sub vid, precipitînd axodul negru de cupru, care se usuca si se reduce în curent de hidrogen la pulbere de cupru, iar inelele Raschig dupa dizolvare fiind recuperate mecanic prin sitari si uscare. în scopul optimizarii fluxului tehnologic se trateaza catalizatorul ramas de la prima faza de dizolvare selectiva acida a aluminiului, cu solutie carboamoniacala introdusa în cantitate dozata pentru solubilizarea cuprului din catalizator sub forma de carbonat cuproamoniacal în concentratie de 100...110 g/l, urmata de descompunerea acestuia în vid la 90...95 degree C pentru precipitarea oxidului negru de cupru, care se prelucreaza în continuare uzual.The process for the extraction of aluminum and copper from spent catalysts according to the invention provides for the disaggregation in admixture with nitric and hydrochloric acids and the precipitation of the dissolved aluminum with ammonia, to pH = 7 ... 7.5, for the production of alumina, which is reused such washing of the remaining catalyst and copper leaching with carboamoniacal solution containing 15 ... 18% NH3 and 8 ... 10% CO2 under air bubbling to solubilize the copper, resulting in a cuproammonium carbonate complex, which further decomposes under vacuum, precipitating the black copper ax, which is dried and reduced to hydrogen powder to copper powder, and the Raschig rings after dissolution are mechanically recovered by sieving and drying. In order to optimize the technological flow, the catalyst remaining from the first acid selective acid dissolution phase of aluminum is treated with a carbonate solution introduced in a dosing amount for the copper solubilization of the catalyst in the form of cuproammonium carbonate in the concentration of 100 ... 110 g / by decomposing it in vacuum at 90 DEG-95 DEG C. for the precipitation of copper black oxide, which is usually processed further.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO10580281A RO83029B1 (en) | 1981-11-18 | 1981-11-18 | Process for extracting aluminium and copper from spent catalysts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO10580281A RO83029B1 (en) | 1981-11-18 | 1981-11-18 | Process for extracting aluminium and copper from spent catalysts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO83029A2 RO83029A2 (en) | 1984-01-14 |
| RO83029B1 true RO83029B1 (en) | 1984-01-30 |
Family
ID=20110661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO10580281A RO83029B1 (en) | 1981-11-18 | 1981-11-18 | Process for extracting aluminium and copper from spent catalysts |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO83029B1 (en) |
-
1981
- 1981-11-18 RO RO10580281A patent/RO83029B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO83029A2 (en) | 1984-01-14 |
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