RO83030B1 - Process for extracting aluminium and copper from spent catalysts - Google Patents
Process for extracting aluminium and copper from spent catalystsInfo
- Publication number
- RO83030B1 RO83030B1 RO10580381A RO10580381A RO83030B1 RO 83030 B1 RO83030 B1 RO 83030B1 RO 10580381 A RO10580381 A RO 10580381A RO 10580381 A RO10580381 A RO 10580381A RO 83030 B1 RO83030 B1 RO 83030B1
- Authority
- RO
- Romania
- Prior art keywords
- copper
- aluminum
- spent catalysts
- solution
- sodium aluminate
- Prior art date
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title abstract 6
- 239000010949 copper Substances 0.000 title abstract 5
- 229910052802 copper Inorganic materials 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
- 239000003054 catalyst Substances 0.000 title abstract 4
- 239000004411 aluminium Substances 0.000 title 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 abstract 2
- 230000005587 bubbling Effects 0.000 abstract 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 2
- 229910001388 sodium aluminate Inorganic materials 0.000 abstract 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 abstract 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 abstract 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 abstract 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 abstract 1
- 239000001099 ammonium carbonate Substances 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 238000000605 extraction Methods 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
- 239000002244 precipitate Substances 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
- Catalysts (AREA)
Abstract
Procedeul de extragere a aluminiului si cuprului din catalizatori uzati, conform inventiei, prevede macinarea urmata de lesierea alcalina, pentru solubizarea aluminiului sub forma de aluminat de sodiu si de lesierea cuprului ramas în deseuri de catalizator cu solutie carboamoniacala cu continut de 15...160 g/l bicarbonat de amoniu 112...130 g/l NH3 si 10% CO2 la pH= 8,5...9 sub barbotare de aer, rezultînd un complex de carbonat cuproamoniacal care se descompune la 90...95 degree C în vid rezultînd oxidul negru de cupru care se trateaza în continuare la 400...450 degree C în atmosfera de hidrogen pentru obtinerea pulberii de cupru, iar din solutia de aluminat de sodiu se precipita hidroxidul de aluminiu prin barbotare cu bioxid de carbon. în scopul optimizarii fluxului tehnologic si recuperarii cuprului si aluminiului cu randamente ridicate, atacul initial al catalizatorilor uzati fiind macinati se face o solutie de NaOH 15...18% introdusa într-un exces de 1,1 fata de cantitatea stoichiometrica necesara.The aluminum and copper extraction process of the spent catalysts according to the invention provides for grinding followed by alkaline leaching to solubilize aluminum in the form of sodium aluminate and to leach copper remaining in catalyst wastes with carboammonium solution containing 15 ... 160 g / l ammonium bicarbonate 112 ... 130 g / l NH3 and 10% CO2 at pH = 8.5 ... 9 under air bubbling, resulting in cuproammonium carbonate complex that decomposes at 90 ... 95 degree C under vacuum resulting in copper black oxide which is further treated at 400 DEG to 450 DEG C. under hydrogen atmosphere to obtain copper powder, and aluminum hydroxide precipitates from the sodium aluminate solution by bubbling carbon dioxide. In order to optimize the technological flow and recover the copper and aluminum with high yields, the initial attack of the spent catalysts being grinded, a solution of 15 ... 18% NaOH is introduced in an excess of 1.1 in relation to the required stoichiometric amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO10580381A RO83030B1 (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 |
|---|---|---|---|
| RO10580381A RO83030B1 (en) | 1981-11-18 | 1981-11-18 | Process for extracting aluminium and copper from spent catalysts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO83030A2 RO83030A2 (en) | 1984-01-14 |
| RO83030B1 true RO83030B1 (en) | 1984-01-30 |
Family
ID=20110662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO10580381A RO83030B1 (en) | 1981-11-18 | 1981-11-18 | Process for extracting aluminium and copper from spent catalysts |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO83030B1 (en) |
-
1981
- 1981-11-18 RO RO10580381A patent/RO83030B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO83030A2 (en) | 1984-01-14 |
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