GB1285602A - Improvements in or relating to the recovery of silver from waste photographic and like solutions - Google Patents
Improvements in or relating to the recovery of silver from waste photographic and like solutionsInfo
- Publication number
- GB1285602A GB1285602A GB08288/70A GB1828870A GB1285602A GB 1285602 A GB1285602 A GB 1285602A GB 08288/70 A GB08288/70 A GB 08288/70A GB 1828870 A GB1828870 A GB 1828870A GB 1285602 A GB1285602 A GB 1285602A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- recovery
- silver
- pump
- machine
- 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
- 238000011084 recovery Methods 0.000 title abstract 6
- 229910052709 silver Inorganic materials 0.000 title abstract 5
- 239000004332 silver Substances 0.000 title abstract 5
- 239000002699 waste material Substances 0.000 title abstract 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 4
- 238000005086 pumping Methods 0.000 abstract 2
- 238000011144 upstream manufacturing Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/20—Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
1285602 Electrolytic recovery of silver PHOTOGRAPHIC SILVER RECOVERY Ltd 2 Sept 1970 [11 Sept 1969 16 April 1970] 44978/69 and 18288/70 Heading C7B An apparatus for the recovery of silver from waste solutions, see for example Fig .1, comprises an electrolytic silver recovery machine, such as a rotating cathode machine 10, and upstream an auxiliary tank 12 receiving the waste solution from the source, a metering pump 13 being turned on and off by changes in the level of solution in the auxiliary tank, such as detected by switches 18 and 19, and pumping solution to the recovery machine, the machine operating at constant electric current and only when the pump is pumping. A high level warning switch 27 may be included in tank 12. Preferably the pipe 15 from the pump passes through a larger overflow pipe 16 and then enters a large diameter pipe 24 having an aperture 32 therein, to provide air gaps in the supply of solution from the pump, which is preferably of the pulsating type. A further upstream tank (not shown) may be provided to even out the flow-rate of solution and may be provided with temperature sensing and heating devices to maintain the solution temperature at for example 85F.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA092338A CA920086A (en) | 1969-09-11 | 1970-09-04 | Recovery of silver from waste photographic and like solutions |
| DE2044580A DE2044580C2 (en) | 1969-09-11 | 1970-09-09 | Device for the recovery of silver from waste solutions containing silver |
| US00070644A US3715291A (en) | 1969-09-11 | 1970-09-09 | Method of recovering silver from waste silver solutions |
| SE7012305A SE372294B (en) | 1969-09-11 | 1970-09-10 | |
| FR7033003A FR2061668B1 (en) | 1969-09-11 | 1970-09-11 | |
| JP45079941A JPS503246B1 (en) | 1969-09-11 | 1970-09-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4497869 | 1969-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1285602A true GB1285602A (en) | 1972-08-16 |
Family
ID=10435441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08288/70A Expired GB1285602A (en) | 1969-09-11 | 1969-09-11 | Improvements in or relating to the recovery of silver from waste photographic and like solutions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1285602A (en) |
-
1969
- 1969-09-11 GB GB08288/70A patent/GB1285602A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |