FR2216232A1 - Silver recovery from waste photographic baths - by passage through beds of cast iron particles - Google Patents

Silver recovery from waste photographic baths - by passage through beds of cast iron particles

Info

Publication number
FR2216232A1
FR2216232A1 FR7303414A FR7303414A FR2216232A1 FR 2216232 A1 FR2216232 A1 FR 2216232A1 FR 7303414 A FR7303414 A FR 7303414A FR 7303414 A FR7303414 A FR 7303414A FR 2216232 A1 FR2216232 A1 FR 2216232A1
Authority
FR
France
Prior art keywords
beds
cast iron
passage
iron particles
silver recovery
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.)
Granted
Application number
FR7303414A
Other languages
French (fr)
Other versions
FR2216232B3 (en
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.)
LOUYOT COMPTOIR LYON ALEMAND
Original Assignee
LOUYOT COMPTOIR LYON ALEMAND
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 LOUYOT COMPTOIR LYON ALEMAND filed Critical LOUYOT COMPTOIR LYON ALEMAND
Priority to FR7303414A priority Critical patent/FR2216232A1/en
Publication of FR2216232A1 publication Critical patent/FR2216232A1/en
Application granted granted Critical
Publication of FR2216232B3 publication Critical patent/FR2216232B3/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/70—Treatment of water, waste water, or sewage by reduction
    • C02F1/705—Reduction by metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/04—Obtaining noble metals by wet processes
    • C22B11/042—Recovery of noble metals from waste materials
    • C22B11/046—Recovery of noble metals from waste materials from manufactured products, e.g. from printed circuit boards, from photographic films, paper or baths
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/10—Obtaining noble metals by amalgamating
    • C22B11/12—Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
    • C22B3/46—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • 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

Abstract

Silver is recovered from waste photographic baths by passing the latter through pref. two beds of ferrous metal compact particles (i.e. spherical, cubic or pyrimidal) and 100-2000 mu size, contact between bath and particles being 10 mins to 3 hrs. At least 90% of silver can be easily recovered. The metal is pref. cast iron. Pref. the particle size decreases in the direction of the bath flow. An appts. for the process is also claimed.
FR7303414A 1973-01-31 1973-01-31 Silver recovery from waste photographic baths - by passage through beds of cast iron particles Granted FR2216232A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7303414A FR2216232A1 (en) 1973-01-31 1973-01-31 Silver recovery from waste photographic baths - by passage through beds of cast iron particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7303414A FR2216232A1 (en) 1973-01-31 1973-01-31 Silver recovery from waste photographic baths - by passage through beds of cast iron particles

Publications (2)

Publication Number Publication Date
FR2216232A1 true FR2216232A1 (en) 1974-08-30
FR2216232B3 FR2216232B3 (en) 1976-01-30

Family

ID=9114126

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7303414A Granted FR2216232A1 (en) 1973-01-31 1973-01-31 Silver recovery from waste photographic baths - by passage through beds of cast iron particles

Country Status (1)

Country Link
FR (1) FR2216232A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027769A1 (en) * 1979-10-23 1981-04-29 EASTMAN KODAK COMPANY (a New Jersey corporation) Metal recovery method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027769A1 (en) * 1979-10-23 1981-04-29 EASTMAN KODAK COMPANY (a New Jersey corporation) Metal recovery method
FR2467887A1 (en) * 1979-10-23 1981-04-30 Kodak Pathe PROCESS FOR THE RECOVERY OF A METAL FROM AQUEOUS SOLUTIONS, BY EXCHANGE WITH A SECOND REDUCING METAL

Also Published As

Publication number Publication date
FR2216232B3 (en) 1976-01-30

Similar Documents

Publication Publication Date Title
BE818621A (en) PROCESS FOR REDUCING THE CONTENT OF AN ALUMINA IN IMPURITIES CONTAINING CARBON.
FR2354394A1 (en) SOLAR ENERGY RECEPTORS AND THEIR MANUFACTURING METHOD
FR2216232A1 (en) Silver recovery from waste photographic baths - by passage through beds of cast iron particles
SE341049B (en)
GB1176850A (en) Purification of Fluid Streams.
ES376188A1 (en) Method of producing lead bead bearing steel
JPS5342441A (en) Agglomeration treatment device
GB967109A (en) Improvements in or relating to a method of and apparatus for continuously casting materials
FR2133733A1 (en) Removal of metals from aq effluents - using an electrolytic cell contg a granular bed
FR2291156A1 (en) Mercury removal from liqs - by amalgamation with solid reducing agents e.g. iron and copper
JPS5249651A (en) Process for treating waste water containing carbon
GB1042159A (en) Purifying silver nitrate
Huesler The wet-air oxidation of industrial sludges
GB929335A (en) Continuous casting plant for metals
SU461788A1 (en) The method of processing metal gas
GB1074924A (en) Treatment of lead-containing sludges
BE769260A (en) Recovery of iron from slag - obtd during prodn of non-ferrous metal
FR2098207A1 (en) Nickel or iron powder prodn - by thermal decomposition of carbonyls in presence of nitrogen oxides
FR2161762A1 (en) Metal recovery - by ore segregation using fe reductant
JPS5231921A (en) Treating method of oxide ore containing iron
SU410655A1 (en) Method of compact titanium producing
JPS51115372A (en) Continuous magnetic separator
FR2028429A1 (en) Acid leaching nickel ores
JPS51133858A (en) Moving bed filter
ATA502375A (en) Treatment of waste gases from iron ore sintering and pelleting plant comprises adding sodium bicarbonate to gas in feed pipe upstream from fabric filter which then separates it out, at least some bicarbonate being recirculated to feed pipe