DE329051C - Process for the recovery of silver from thin emulsions produced in the manufacture of photographic fabrics - Google Patents
Process for the recovery of silver from thin emulsions produced in the manufacture of photographic fabricsInfo
- Publication number
- DE329051C DE329051C DE1916329051D DE329051DD DE329051C DE 329051 C DE329051 C DE 329051C DE 1916329051 D DE1916329051 D DE 1916329051D DE 329051D D DE329051D D DE 329051DD DE 329051 C DE329051 C DE 329051C
- Authority
- DE
- Germany
- Prior art keywords
- silver
- recovery
- photographic
- fabrics
- manufacture
- 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
- 239000000839 emulsion Substances 0.000 title claims description 9
- 229910052709 silver Inorganic materials 0.000 title claims description 9
- 239000004332 silver Substances 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 5
- 238000011084 recovery Methods 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000004744 fabric Substances 0.000 title 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 4
- 239000005018 casein Substances 0.000 claims description 4
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 claims description 4
- 235000021240 caseins Nutrition 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 229940037003 alum Drugs 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 239000000344 soap Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000001828 Gelatine Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- WKPSFPXMYGFAQW-UHFFFAOYSA-N iron;hydrate Chemical compound O.[Fe] WKPSFPXMYGFAQW-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- G03C11/00—Auxiliary processes in photography
- G03C11/24—Removing emulsion from waste photographic material; Recovery of photosensitive or other substances
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Peptides Or Proteins (AREA)
Description
Verfahren zur Wiedergewinnung. von Silber aus bei der - Herstellung . photögraphischer Stoffe abfallenden dünnen Emulsionen. ' Die Erfindung betrifft eine weitere Ausbildung des durch Patent 32,3708 geschützten Verfahrens zur Wiedergewinnung des Silbers aus dünnen Emulsionen.Method of recovery. from silver in the production. thin emulsions of photographic substances falling off. The invention relates to a further development of the process protected by patent 32,3708 for the recovery of silver from thin emulsions.
Das neue Verfahren besteht darin, d@aß man in die Emulsion zwei oder drei Reagenzien einbringt, die durch ihre gegenseitige Einwirkung aufeinander einen flockigen oder gelatinösen Niederschlag erzeugen, der das Silber. zu Boden führt, so daB es: später durch irgendwelche Mittel ausgezogen werden kann. Geeignete Fällungsmittel sind: Tonerdehydrat, Eisenhydrat, Harz, Kasein usw., die nach irgendeiner der bekannten chemischen Reaktionen innerhalb der das Silber enthaltenden Emulsion ausgeschieden werden. Beispielsweise kann man eine Alaunlösung und darauf Ammoniak zusetzen oder eine ammoniakalische Lösung aus Harzseife oder Kasein benutzen, wonach dann Salzsäure zugefügt wird. -- Beispiel. ' 45001 Emulsion mit etwa 1130g metallischem Silber als Haloidsalz' und etwa 4,5. kg Gelatine erfordern 11,5 kg -gelöste schwefelsaure. Tonerde sowie 4,5 1 Ammoniak vom spei. Gew. 0,88o. Unter denselben Bedingungen sind anzuwenden 6,5 kg in einer wässerigen Lösung von - kg wasserfreiem kohlensauren Natron' gelöstes Harz und 4,51 konzentrierte Salzsäure, oder endlich i z kg in 285.1 1/1o prozentigem Ammoniak gelöstes Kasein sowie 2,8 kg konzentrierte Salzsäure.The new process consists in introducing two or three reagents into the emulsion which, through their mutual action, produce a flaky or gelatinous precipitate which contains the silver. leads to the ground so that it can later be pulled out by any means. Suitable precipitants are: alumina hydrate, iron hydrate, resin, casein, etc., which are precipitated after any of the known chemical reactions within the emulsion containing the silver. For example, an alum solution and then ammonia can be added or an ammoniacal solution of resin soap or casein can be used, after which hydrochloric acid is then added. -- Example. '45001 emulsion with about 1130g metallic silver as haloid salt' and about 4.5. kg of gelatine require 11.5 kg of dissolved sulfuric acid. Clay and 4.5 l ammonia from the spei. Wt. 0.88o. Under the same conditions, 6.5 kg of resin dissolved in an aqueous solution of - kg of anhydrous carbonate of soda and 4.5 l of concentrated hydrochloric acid, or finally iz kg of casein dissolved in 285.1 1/10 percent ammonia and 2.8 kg of concentrated hydrochloric acid are to be used.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE329051T | 1916-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE329051C true DE329051C (en) | 1920-11-09 |
Family
ID=6186650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1916329051D Expired DE329051C (en) | 1916-10-19 | 1916-10-19 | Process for the recovery of silver from thin emulsions produced in the manufacture of photographic fabrics |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE329051C (en) |
-
1916
- 1916-10-19 DE DE1916329051D patent/DE329051C/en not_active Expired
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