PT95565A - Processo para a recuperacao da prata como sulfureto de prata a partir duma solucao de fixador fotografico usada, contendo prata - Google Patents
Processo para a recuperacao da prata como sulfureto de prata a partir duma solucao de fixador fotografico usada, contendo prata Download PDFInfo
- Publication number
- PT95565A PT95565A PT95565A PT9556590A PT95565A PT 95565 A PT95565 A PT 95565A PT 95565 A PT95565 A PT 95565A PT 9556590 A PT9556590 A PT 9556590A PT 95565 A PT95565 A PT 95565A
- Authority
- PT
- Portugal
- Prior art keywords
- sulfhydrate
- silver
- solution
- fixative solution
- process according
- Prior art date
Links
Classifications
-
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/395—Regeneration of photographic processing agents other than developers; Replenishers therefor
- G03C5/3952—Chemical, mechanical or thermal methods, e.g. oxidation, precipitation, centrifugation
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Removal Of Specific Substances (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Cosmetics (AREA)
Claims (1)
- 22 ÍUEmbora as formas preferidas de realização da invenção, fossem descritas pormenoriaadamente, é evidente que os peritos na matéria podem operar variações, sem afastamento do espírito da invenção ou do âmbito das reivindicações em anexo. BEIYIHDIOAOÕES 1§, - Processo para a recuperação da prata como sulfureto de prata a partir duma solução de fixador fotográfico, caracte-rizado pelo facto de compreender as operações que consistem em a) se adicionar à solução de fixador exausta, um reagente contendo sulfidrato o qual proporciona iões sulfidrato; b) se permitir a formação dum precipitado e se retirar o referido produto precipitado da solução, regenerando assim a referida solução de fixador; e b) se reutilizar a solução de fixador como uma solução de agente fixador fotográfico. 2-0 - Processo de acordo com a reivindicação 1, caracterizado pelo facto de a solução de fixador ser uma solução de tiossul· fato de sódio. 3§. - Processo de acordo com a reivindicação 1, caracterizadopelo facto de a mencionada solução de fixador ser uma solução de tiossulfato de amónio. 4ã. - Processo de acordo com qualquer das reivindicações 1 a 3, caracterizado pelo facto de o referido reagente contendo sulfidrato ser sulfidrato de sódio. 5â. - Processo de acordo com qualquer das reivindicações 1 a 3, caracterizado pelo facto de o meneionado sulfidrato reagente ser sulfidrato de potássio. 6â, - Processo de acordo com qualquer das reivindicações 1 a 3, caracterizado pelo facto de o referido sulfidrato reagente ser sulfidrato de amónio. 7â. - Processo de acordo com qualquer das reivindicações 1 a 6, caracterizado pelo facto da proporção molar do citado sulfidrato reagente para a prata ser inferior a 0,1. 8&. - Processo de acordo com qualquer das reivindicações 1 a 7, caracterizado pelo facto de a proporção molar do mencionado sulfidrato reagente para a prata ser superior a 0,5. 9â. . Processo de acordo com qualquer das reivindicações 1 a 8, caracterizado pelo facto de se adicionar mais solução recente de fixador a fim de completar a quantidade de solução de fixador antes de a reutilizar.Λ10i. - Processo de acordo com qualquer das reivindicações 1 a 9, caracterizado pelo facto de se recuperar a prata do produto precipitado. Lisboa, 11 de Outubro de 1990 0 Agente Oficial da Propriedade IndustrialAmérico da Silva Carvalho Agente Oficial da Propriedade Industrial R. Castiiho, 201-3. E.-1000 LISBOA Telets. 651339-654613
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2000527 CA2000527A1 (en) | 1989-10-12 | 1989-10-12 | Silver recovery from spent photographic solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PT95565A true PT95565A (pt) | 1991-08-14 |
Family
ID=4143307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT95565A PT95565A (pt) | 1989-10-12 | 1990-10-11 | Processo para a recuperacao da prata como sulfureto de prata a partir duma solucao de fixador fotografico usada, contendo prata |
Country Status (22)
| Country | Link |
|---|---|
| EP (1) | EP0565518B1 (pt) |
| JP (1) | JPH05506269A (pt) |
| CN (1) | CN1036029C (pt) |
| AP (1) | AP210A (pt) |
| AT (1) | ATE118556T1 (pt) |
| AU (1) | AU642102B2 (pt) |
| BR (1) | BR9007704A (pt) |
| CA (1) | CA2000527A1 (pt) |
| DE (1) | DE69017052T2 (pt) |
| EG (1) | EG19094A (pt) |
| FI (1) | FI921617A0 (pt) |
| HU (1) | HUT66894A (pt) |
| IE (1) | IE903642A1 (pt) |
| IL (1) | IL95847A (pt) |
| MA (1) | MA21972A1 (pt) |
| NZ (1) | NZ235620A (pt) |
| PE (1) | PE791A1 (pt) |
| PL (1) | PL165799B1 (pt) |
| PT (1) | PT95565A (pt) |
| WO (1) | WO1991005882A1 (pt) |
| YU (1) | YU190090A (pt) |
| ZA (1) | ZA907735B (pt) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2165468C1 (ru) * | 1999-09-28 | 2001-04-20 | Акционерное общество открытого типа "Катализатор" | Способ извлечения серебра из отработанных фоторастворов, промывных и сточных вод |
| CN102616963B (zh) * | 2011-07-08 | 2014-12-17 | 华东理工大学 | 感光材料废液的光催化处理方法 |
| US12253612B2 (en) | 2021-10-28 | 2025-03-18 | Hewlett Packard Enterprise Development Lp | Location detection with GNSS and device range measurements |
| US12279323B2 (en) | 2022-06-13 | 2025-04-15 | Hewlett Packard Enterprise Development Lp | Split multi-link system |
| CN116987899B (zh) * | 2023-08-30 | 2025-08-01 | 昆明理工大学 | 一种从印刷胶片和定影液中回收金属银的方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2481203A (en) | 1946-11-29 | 1949-09-06 | Maurice Y Nicole | Gothic arch tracing device |
| US3082079A (en) * | 1960-06-15 | 1963-03-19 | Eastman Kodak Co | Silver recovery from photographic fixing solutions |
| US3634088A (en) * | 1970-02-02 | 1972-01-11 | Eastman Kodak Co | Regeneration of blix solutions used in photographic processing |
| BE790374A (fr) * | 1971-10-22 | 1973-02-15 | Fuji Photo Film Co Ltd | Procede de regeneration d'une solution de blanchiment -fixage pour le traitement photographique en couleur |
| BE795767A (nl) * | 1972-03-02 | 1973-08-22 | Agfa Gevaert Nv | Werkwijze voor het regenereren van uitgeputte fotografische zilverbleekbaden |
| JPS6345121A (ja) * | 1986-08-12 | 1988-02-26 | Nobuaki Terai | 水硫化ナトリウムＮａＨＳによる硫化銀沈殿法および硫化アンモニウム（ＮＨ↓４）↓２Ｓによる硫化銀沈殿法 |
| DE3718583A1 (de) * | 1987-06-03 | 1988-12-22 | Michael Bonk | Verfahren zur silberrueckgewinnung aus fixiersalzloesungen durch sulfidfaellung |
| DK163297C (da) * | 1990-02-08 | 1992-07-06 | Eskofot As | Fremgangsmaade og apparat til fjernelse af soelv i form af soelvsulfid fra en fotografisk vaeske ved bestraaling og udfaeldning |
-
1989
- 1989-10-12 CA CA 2000527 patent/CA2000527A1/en not_active Abandoned
-
1990
- 1990-09-27 ZA ZA907735A patent/ZA907735B/xx unknown
- 1990-09-28 IL IL95847A patent/IL95847A/en not_active IP Right Cessation
- 1990-10-08 MA MA22241A patent/MA21972A1/fr unknown
- 1990-10-09 YU YU190090A patent/YU190090A/sh unknown
- 1990-10-10 HU HU9201241A patent/HUT66894A/hu unknown
- 1990-10-10 NZ NZ23562090A patent/NZ235620A/xx unknown
- 1990-10-10 EP EP19900914663 patent/EP0565518B1/en not_active Expired - Lifetime
- 1990-10-10 AT AT90914663T patent/ATE118556T1/de not_active IP Right Cessation
- 1990-10-10 JP JP90513521A patent/JPH05506269A/ja active Pending
- 1990-10-10 AU AU65010/90A patent/AU642102B2/en not_active Ceased
- 1990-10-10 BR BR9007704A patent/BR9007704A/pt not_active IP Right Cessation
- 1990-10-10 WO PCT/CA1990/000347 patent/WO1991005882A1/en not_active Ceased
- 1990-10-10 FI FI921617A patent/FI921617A0/fi not_active Application Discontinuation
- 1990-10-10 DE DE69017052T patent/DE69017052T2/de not_active Expired - Fee Related
- 1990-10-11 PE PE1990175990A patent/PE791A1/es not_active Application Discontinuation
- 1990-10-11 PT PT95565A patent/PT95565A/pt not_active Application Discontinuation
- 1990-10-11 IE IE364290A patent/IE903642A1/en unknown
- 1990-10-11 EG EG59990A patent/EG19094A/xx active
- 1990-10-11 CN CN90108190A patent/CN1036029C/zh not_active Expired - Fee Related
- 1990-10-12 AP APAP/P/1990/000221A patent/AP210A/en active
- 1990-10-12 PL PL90287299A patent/PL165799B1/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA2000527A1 (en) | 1991-04-12 |
| HU9201241D0 (en) | 1992-09-28 |
| WO1991005882A1 (en) | 1991-05-02 |
| ZA907735B (en) | 1992-05-27 |
| MA21972A1 (fr) | 1991-07-01 |
| AP9000221A0 (en) | 1991-01-31 |
| FI921617A7 (fi) | 1992-04-10 |
| AU6501090A (en) | 1991-05-16 |
| HUT66894A (en) | 1995-01-30 |
| PE791A1 (es) | 1991-01-26 |
| CN1036029C (zh) | 1997-10-01 |
| BR9007704A (pt) | 1992-07-21 |
| JPH05506269A (ja) | 1993-09-16 |
| CN1050933A (zh) | 1991-04-24 |
| NZ235620A (en) | 1992-11-25 |
| IL95847A0 (en) | 1991-06-30 |
| FI921617L (fi) | 1992-04-10 |
| PL165799B1 (pl) | 1995-02-28 |
| YU190090A (sh) | 1993-11-16 |
| EG19094A (en) | 1994-09-29 |
| ATE118556T1 (de) | 1995-03-15 |
| FI921617A0 (fi) | 1992-04-10 |
| IE903642A1 (en) | 1991-04-24 |
| AP210A (en) | 1992-08-26 |
| EP0565518A1 (en) | 1993-10-20 |
| DE69017052D1 (de) | 1995-03-23 |
| EP0565518B1 (en) | 1995-02-15 |
| AU642102B2 (en) | 1993-10-07 |
| IL95847A (en) | 1998-02-22 |
| DE69017052T2 (de) | 1995-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BB1A | Laying open of patent application |
Effective date: 19910320 |
|
| FC3A | Refusal |
Effective date: 19970214 |