MD791G2 - Process for silver recovery from the exhausted photographic material - Google Patents
Process for silver recovery from the exhausted photographic materialInfo
- Publication number
- MD791G2 MD791G2 MD96-0017A MD960017A MD791G2 MD 791 G2 MD791 G2 MD 791G2 MD 960017 A MD960017 A MD 960017A MD 791 G2 MD791 G2 MD 791G2
- Authority
- MD
- Moldova
- Prior art keywords
- exhausted
- silver recovery
- hydrogen peroxide
- silver
- invention consists
- Prior art date
Links
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 4
- 229910052709 silver Inorganic materials 0.000 title abstract 4
- 239000004332 silver Substances 0.000 title abstract 4
- 239000000463 material Substances 0.000 title abstract 3
- 238000011084 recovery Methods 0.000 title abstract 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract 3
- 230000001133 acceleration Effects 0.000 abstract 1
- 229910052788 barium Inorganic materials 0.000 abstract 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000005672 electromagnetic field Effects 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Landscapes
- Projection-Type Copiers In General (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
The invention relates to the silver recovery, mainly from the exhausted and developed X-ray and fluorographic films, photographic paper and other photographic materials by means of chemical reagent treatment thereof.The summary of the invention consists in the fact that the process for silver recovery from the exhausted photographic material includes the reagent treatment thereof by introducing the disperse phase with the subsequent sediment separation, wherein hydrogen peroxide and the dispersed magnetite are used as reagents, taken in mass relation 1 : (5-10) , the process is carried out at a temperature of 50-70°C with the magneto-liquefaction of the disperse medium by the superposition of the alternating electromagnetic field with the intensity of 1200-1500 Oe on the ferromagnetic gummed spherical bodies comprised of sintered barium hexaferite magnetized till the saturation. The best results are reached at the introducion of 7-10 % hydrogen peroxide solution.The technical result of the invention consists in the acceleration of the silver containing compounds oxidation process and the mass transfer increase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MD96-0017A MD791G2 (en) | 1996-01-30 | 1996-01-30 | Process for silver recovery from the exhausted photographic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MD96-0017A MD791G2 (en) | 1996-01-30 | 1996-01-30 | Process for silver recovery from the exhausted photographic material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD791F1 MD791F1 (en) | 1997-07-31 |
| MD791G2 true MD791G2 (en) | 1998-05-31 |
Family
ID=19738783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MD96-0017A MD791G2 (en) | 1996-01-30 | 1996-01-30 | Process for silver recovery from the exhausted photographic material |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD791G2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD3037G2 (en) * | 2004-11-15 | 2006-12-31 | Государственный Университет Молд0 | Process for silver extraction from used photographic materials |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD830Z (en) * | 2014-04-18 | 2015-06-30 | Институт Генетики, Физиологии И Защиты Растений Академии Наук Молдовы | Process for pre-sowing treatment of carrot seeds |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1699949A1 (en) * | 1989-11-28 | 1991-12-23 | Нижнекамское производственное объединение "Нижнекамскнефтехим" | Method of recovering silver from sewage |
-
1996
- 1996-01-30 MD MD96-0017A patent/MD791G2/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1699949A1 (en) * | 1989-11-28 | 1991-12-23 | Нижнекамское производственное объединение "Нижнекамскнефтехим" | Method of recovering silver from sewage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD3037G2 (en) * | 2004-11-15 | 2006-12-31 | Государственный Университет Молд0 | Process for silver extraction from used photographic materials |
Also Published As
| Publication number | Publication date |
|---|---|
| MD791F1 (en) | 1997-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG3A | Granted patent for invention | ||
| IF99 | Valid patent on 19990615 |
Free format text: EXPIRES: 20160130 |