GB1462868A - Electrolytic recovery for silver from used photographic solutions - Google Patents

Electrolytic recovery for silver from used photographic solutions

Info

Publication number
GB1462868A
GB1462868A GB3065073A GB3065073A GB1462868A GB 1462868 A GB1462868 A GB 1462868A GB 3065073 A GB3065073 A GB 3065073A GB 3065073 A GB3065073 A GB 3065073A GB 1462868 A GB1462868 A GB 1462868A
Authority
GB
United Kingdom
Prior art keywords
cell
pump
solution
switches
tank
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
Application number
GB3065073A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Photographic Silver Recovery Ltd
Original Assignee
Photographic Silver Recovery Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Photographic Silver Recovery Ltd filed Critical Photographic Silver Recovery Ltd
Priority to GB3065073A priority Critical patent/GB1462868A/en
Priority to AU69868/74A priority patent/AU486468B2/en
Priority to CA202,727A priority patent/CA1061284A/en
Priority to DE2429288A priority patent/DE2429288A1/en
Priority to US480828A priority patent/US3901777A/en
Priority to IT24404/74A priority patent/IT1054173B/en
Priority to FR7422255A priority patent/FR2235211B2/fr
Priority to SE7408402A priority patent/SE7408402L/xx
Priority to JP49074182A priority patent/JPS5741555B2/ja
Publication of GB1462868A publication Critical patent/GB1462868A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/06—Operating or servicing

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)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1462868 Electro-recovering silver PHOTOGRAPHIC SILVER RECOVERY Ltd 17 June 1974 [27 June 1973] 30650/73 Addition to 1285602 Heading C7B An apparatus for recovering Ag from used bleach-fix photographic solution comprises an electrolytic recovery or plating cell 11 preceded by a buffer or store tank 12 receiving the used solution and from which the solution is pumped to the cell intermittently by metering pump 13, switch means operated according to the solution level in the buffer tank, e.g. top and bottom level switches A and D, to control the pump and switching on or off of plating current of the cell, and means for automatically separating the cathode assembly and the solution from one another when the plating current is switched off; e.g. either lifting means also controlled by the switch means for automatically lifting the cathode assembly out of the solution in the cell, or a pump 14 started by the switch means for pumping solution out of the cell automatically, when the plating current is switched off. The apparatus may also include a pump 15 for filling the cell with solution from the tank; the top level switch A of the tank start pumps 13, 15 for filling the cell and switches on the plating current, the top level switch B of the cell switches off the pump 15, the bottom level switch D of the tank switches off the pump 13 and plating current and switches on the pump 14 for emptying the cell, and the bottom level switch E of the cell switches off the pump 14. The cathode assembly preferably comprises a series of frustoconical discs 18 spaced e.g. by spacers 20 along a vertical shaft 19, each disc having drain hole 21 near the centre.
GB3065073A 1973-06-27 1973-06-27 Electrolytic recovery for silver from used photographic solutions Expired GB1462868A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB3065073A GB1462868A (en) 1973-06-27 1973-06-27 Electrolytic recovery for silver from used photographic solutions
AU69868/74A AU486468B2 (en) 1973-06-27 1974-06-06 Improvements in or relating tothe recovery of silver from used photographic solutions
CA202,727A CA1061284A (en) 1973-06-27 1974-06-18 Recovery of silver from used photographic solutions
DE2429288A DE2429288A1 (en) 1973-06-27 1974-06-19 METHOD AND DEVICE FOR THE RECOVERY OF SILVER FROM WASTE SOLUTIONS
US480828A US3901777A (en) 1973-06-27 1974-06-19 Recovery of silver from used photographic solutions
IT24404/74A IT1054173B (en) 1973-06-27 1974-06-25 PROCEDURE AND EQUIPMENT FOR RECOVERING SILVER FROM USED PHOTOGRAPHIC SOLUTIONS
FR7422255A FR2235211B2 (en) 1973-06-27 1974-06-26
SE7408402A SE7408402L (en) 1973-06-27 1974-06-26
JP49074182A JPS5741555B2 (en) 1973-06-27 1974-06-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3065073A GB1462868A (en) 1973-06-27 1973-06-27 Electrolytic recovery for silver from used photographic solutions

Publications (1)

Publication Number Publication Date
GB1462868A true GB1462868A (en) 1977-01-26

Family

ID=10310965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3065073A Expired GB1462868A (en) 1973-06-27 1973-06-27 Electrolytic recovery for silver from used photographic solutions

Country Status (8)

Country Link
US (1) US3901777A (en)
JP (1) JPS5741555B2 (en)
CA (1) CA1061284A (en)
DE (1) DE2429288A1 (en)
FR (1) FR2235211B2 (en)
GB (1) GB1462868A (en)
IT (1) IT1054173B (en)
SE (1) SE7408402L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561957A (en) * 1984-06-11 1985-12-31 Palazzolo James C Electrolytic silver recovery system
US4802961A (en) * 1987-12-23 1989-02-07 Woog Manfred J Silver removal apparatus and method
DE4445637C2 (en) * 1994-12-21 1998-07-16 Kodak Ag Silver recovery arrangement
EP0857798B1 (en) * 1997-01-31 2002-01-30 Agfa-Gevaert N.V. An electrolytic cell and method for removing silver from silver-containing aqueous liquids
US6860976B2 (en) * 2000-06-20 2005-03-01 Lynntech International, Ltd. Electrochemical apparatus with retractable electrode

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615839A (en) * 1948-04-12 1952-10-28 Henry O Willier Recovery of precious metals from photographic baths
US3330755A (en) * 1962-08-14 1967-07-11 Electro Cell Corp Electrolytic apparatus
US3342718A (en) * 1964-01-21 1967-09-19 William M Adams Apparatus for the recovery of silver from used photographic fixing solutions by electrolysis
US3458425A (en) * 1967-01-09 1969-07-29 Charles I Tolle Cathode structure for electrolytic apparatus
CA920086A (en) * 1969-09-11 1973-01-30 S. Bentley James Recovery of silver from waste photographic and like solutions
US3616332A (en) * 1969-12-17 1971-10-26 Texas Instruments Inc Process for recovering silver from scrap materials and electrolyte composition for use therein
US3705716A (en) * 1971-07-09 1972-12-12 Eastman Kodak Co Monitoring silver recovery

Also Published As

Publication number Publication date
JPS5068910A (en) 1975-06-09
JPS5741555B2 (en) 1982-09-03
CA1061284A (en) 1979-08-28
AU6986874A (en) 1975-12-11
FR2235211B2 (en) 1978-06-02
IT1054173B (en) 1981-11-10
US3901777A (en) 1975-08-26
DE2429288A1 (en) 1975-01-16
SE7408402L (en) 1974-12-30
FR2235211A2 (en) 1975-01-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]