EP0465401A1 - Apparatus for recovering silver or other precious metals dissolved in a liquid - Google Patents

Apparatus for recovering silver or other precious metals dissolved in a liquid Download PDF

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Publication number
EP0465401A1
EP0465401A1 EP91810208A EP91810208A EP0465401A1 EP 0465401 A1 EP0465401 A1 EP 0465401A1 EP 91810208 A EP91810208 A EP 91810208A EP 91810208 A EP91810208 A EP 91810208A EP 0465401 A1 EP0465401 A1 EP 0465401A1
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Prior art keywords
tank
cathode
intended
drive
solution
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EP91810208A
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German (de)
French (fr)
Inventor
René Paul Bacque
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Spac SA
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Spac SA
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    • 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
    • C25C7/007—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells of cells comprising at least a movable electrode
    • 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

Definitions

  • the present invention relates to an apparatus for recovering silver or other precious metals in solution in a liquid, in particular for recovering silver from a used photographic or radiological solution.
  • the most commonly used silver collectors include a tank provided with two or more carbon anodes and inside which are arranged horizontal shelves or grids on which the metal sludges contained in the fixative solution to be treated are deposited. This sludge must then be dried and treated in several stages to obtain silver of acceptable quality. The yield of these devices is only a maximum of 60% of the money contained in the solution to be treated. On the other hand, the fixer solution is not reusable.
  • recuperator A more efficient recuperator is described in the French patent application published under No. 2,481,716.
  • the two electrodes have cylindrical surfaces spaced radially and are mounted on a common vertical axis.
  • This recuperator is provided with an impeller device, such as for example a propeller agitator, intended to create a circulation of liquid in the tank in the space between the electrodes.
  • This recuperator has a higher yield than that described above.
  • it is more complex to produce and its dismantling requires the prior deposition of the anode in order to be able to deposit the cathode.
  • the agitator constitutes an additional element susceptible to breakdowns.
  • the object of the present invention is to provide a recuperator of silver or other precious metals of low size, easy to handle, making it possible to achieve a yield greater than 99% and allowing extraction in metallic form, the metal obtained being directly marketable.
  • the invention relates to an apparatus for recovering silver or other precious metals as defined in claim 1.
  • the recuperator shown in FIGS. 1 to 4 comprises a lower part in the form of a tank, intended to contain the fixative solution to be treated, and an upper part 10 containing the electronic part of the system.
  • the tank 1 has four anodes 3 arranged vertically along each of the walls 2 of the tank.
  • the cathode 4 is cylindrical in shape, open at its ends. It is suspended in the tank by means of a suspension member 11 fixed to a horizontal plate 12 welded to the upper part of the cathode, the suspension member 11 being integral with a drive device 5 (figure 4) intended for the rotation of the cathode.
  • the upper part 10 comprises the electrical control device 13 of the device, secured to a control plate 14 disposed on the surface of said upper part 10 and revealing in particular an ammeter 15, a light switch sector 16 and a keyboard for control 17 in several positions.
  • the electrical control device is connected to the drive device 5 for rotating the cathode.
  • the electrical control device is also connected to a power outlet 23, intended to receive a cable 22 for connection to a source of electrical current.
  • the passage of the electric current from the control device 13 to the anodes 3 is done by means of a metal strapping 18 disposed around the tank, at the upper part of the tank, said strapping being connected to the electrical control device 13 by through an electric cable 19.
  • the device can be produced in different sizes, the tank 1 can for example be produced in dimensions of 22/22/42 centimeters, for a capacity of 6 liters or 30/30/78 centimeters for a capacity of 40 liters.
  • the cylindrical cathode can have the following dimensions: thickness 1.5 millimeters, outside diameter 178 millimeters, height 330 millimeters.
  • the recovery device can be made according to any other dimensions.
  • the device can operate either in an intermittent system, the reservoir being filled at intervals when the need arises, or in a continuous system, the device then being directly connected, for example, to the device containing the developer solution photographic film or to reserve used fixing products.
  • the tank has two openings, namely a supply orifice 20 arranged at the bottom of the tank and a discharge orifice 21 arranged at its upper part.
  • the device to recover can also be provided with a timer allowing an automatic shutdown of the device after a time of use programmed in advance.
  • Another advantage of the recovery apparatus described above is that the treated fixative solution is then recoverable and can therefore be used several times.
  • the drive device intended to drive the cathode in rotation comprises a motor 25 coupled to a reduction gear 26 acting on a motor shaft 27 integral with a drive member 28.
  • Said member drive is itself made integral with a drive shaft 29 by means of pins 32.
  • This drive shaft 29, which is of diameter greater than that of the motor axis comprises a ball bearing 30 fixed on a support plate 31, said plate being intended to be fixed to the frame of the upper part of the apparatus, so as to prevent the motor part from supporting the whole weight of the cathode, a connecting pin 33, integral with the stop 30 and the drive shaft 29 being intended to fit into the suspension member 11 of the cathode, a key 34 being intended to hold them together.
  • the drive device 5 can be made in any other suitable way.

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  • 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)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The apparatus comprises a lower part (1) in the shape of a vessel containing the solution to be treated, and an upper part (10) containing the electronic part of the system. The vessel comprises four anodes (3) arranged vertically along each of the walls of the vessel. The cathode (4) is cylindrical in shape, open at its ends. It is suspended in the vessel by means of a suspending member (11) fastened to a horizontal plate (12) welded to the upper part of the cathode, the suspending member (11) being integrally attached to a driving device (5) intended to make the cathode rotate. <IMAGE>

Description

La présente invention concerne un appareil récupérateur d'argent ou d'autres métaux précieux en solution dans un liquide, en particulier pour récupérer l'argent d'une solution photographique ou radiologique usée.The present invention relates to an apparatus for recovering silver or other precious metals in solution in a liquid, in particular for recovering silver from a used photographic or radiological solution.

Les récupérateurs d'argent les plus couramment utilisés comportent un bac pourvu de deux ou plusieurs anodes en carbone et à l'intérieur duquel sont disposés des clayettes ou grilles horizontales sur lesquelles se déposent les boues métalliques contenues dans la solution de fixateur à traiter. Ces boues doivent ensuite être séchées et traitées en plusieurs étapes pour obtenir un argent de qualité acceptable. Le rendement de ces appareils n'est au maximum que de 60 % de l'argent contenu dans la solution à traiter. D'autre part, la solution de fixateur n'est pas réutilisable.The most commonly used silver collectors include a tank provided with two or more carbon anodes and inside which are arranged horizontal shelves or grids on which the metal sludges contained in the fixative solution to be treated are deposited. This sludge must then be dried and treated in several stages to obtain silver of acceptable quality. The yield of these devices is only a maximum of 60% of the money contained in the solution to be treated. On the other hand, the fixer solution is not reusable.

Un récupérateur plus efficace est décrit dans la demande de brevet française publiée sous no 2 481 716. Dans ce récupérateur, les deux électrodes ont des surfaces cylindriques espacées radialement et sont montées sur un axe vertical commun. Ce récupérateur est muni d'un dispositif impulseur, tel que par exemple un agitateur à hélice, destiné à créer une circulation de liquide dans la cuve dans l'espace entre les électrodes. Ce récupérateur est d'un rendement supérieur à celui décrit plus haut. Toutefois, il est plus complexe à réaliser et son démontage nécessite le dépôt préalable de l'anode pour pouvoir déposer la cathode. De plus, l'agitateur constitue un élément supplémentaire susceptible de pannes.A more efficient recuperator is described in the French patent application published under No. 2,481,716. In this recuperator, the two electrodes have cylindrical surfaces spaced radially and are mounted on a common vertical axis. This recuperator is provided with an impeller device, such as for example a propeller agitator, intended to create a circulation of liquid in the tank in the space between the electrodes. This recuperator has a higher yield than that described above. However, it is more complex to produce and its dismantling requires the prior deposition of the anode in order to be able to deposit the cathode. In addition, the agitator constitutes an additional element susceptible to breakdowns.

Le but de la présente invention est de proposer un récupérateur d'argent ou d'autres métaux précieux d'un faible encombrement, facile à manipuler, permettant d'atteindre un rendement supérieur à 99 % et permettant une extraction sous forme métallique, le métal obtenu étant directement commercialisable.The object of the present invention is to provide a recuperator of silver or other precious metals of low size, easy to handle, making it possible to achieve a yield greater than 99% and allowing extraction in metallic form, the metal obtained being directly marketable.

A cet effet, l'invention concerne un appareil récupérateur d'argent ou d'autres métaux précieux tel que défini à la revendication 1.To this end, the invention relates to an apparatus for recovering silver or other precious metals as defined in claim 1.

D'autres caractéristiques importantes de l'appareil de l'invention sont définies dans les revendications subordonnées à la revendication 1.Other important features of the apparatus of the invention are defined in the claims dependent on claim 1.

On comprendra bien l'invention à l'aide de la description donnée ci-après d'un exemple de réalisation de l'appareil récupérateur et en se référant au dessin sur lequel :

  • la fig. 1 est une vue de face d'un exemple d'appareil récupérateur selon l'invention,
  • la fig. 2 est une vue latérale de l'appareil de la figure 1,
  • la fig. 3 est une vue en coupe horizontale simplifiée selon I-I de l'appareil de la figure 1,
  • la fig. 4 est une vue en coupe verticale simplifiée selon II-II de l'appareil de la figure 1,
  • la fig. 5 est une vue en perspective de la cathode de l'appareil illustré aux figures 1 à 4, et
  • la fig. 6 est une vue en coupe verticale d'un exemple de dispositif d'entraînement en rotation de la cathode.
The invention will be clearly understood with the aid of the description given below of an exemplary embodiment of the recovery apparatus and with reference to the drawing in which:
  • fig. 1 is a front view of an example of a recovery device according to the invention,
  • fig. 2 is a side view of the device of FIG. 1,
  • fig. 3 is a simplified horizontal section view along II of the apparatus of FIG. 1,
  • fig. 4 is a simplified vertical section view along II-II of the apparatus of FIG. 1,
  • fig. 5 is a perspective view of the cathode of the device illustrated in FIGS. 1 to 4, and
  • fig. 6 is a vertical sectional view of an example of a device for driving the cathode in rotation.

Le récupérateur représenté sur les figures 1 à 4 comporte une partie inférieure sous forme de cuve, destinée à contenir la solution de fixateur à traiter, et une partie supérieure 10 contenant la partie électronique du système.The recuperator shown in FIGS. 1 to 4 comprises a lower part in the form of a tank, intended to contain the fixative solution to be treated, and an upper part 10 containing the electronic part of the system.

Comme on peut voir sur la figure 2, la cuve 1 comporte quatre anodes 3 disposées verticalement le long de chacune des parois 2 de la cuve. La cathode 4 est de forme cylindrique, ouverte à ses extrémités. Elle est suspendue dans la cuve par l'intermédiaire d'un organe de suspension 11 fixé sur une plaque horizontale 12 soudée à la partie supérieure de la cathode, l'organe de suspension 11 étant solidaire d'un dispositif d'entraînement 5 (figure 4) destiné à la mise en rotation de la cathode.As can be seen in Figure 2, the tank 1 has four anodes 3 arranged vertically along each of the walls 2 of the tank. The cathode 4 is cylindrical in shape, open at its ends. It is suspended in the tank by means of a suspension member 11 fixed to a horizontal plate 12 welded to the upper part of the cathode, the suspension member 11 being integral with a drive device 5 (figure 4) intended for the rotation of the cathode.

La partie supérieure 10 comporte le dispositif électrique de commande 13 de l'appareil, solidaire d'une platine de commande 14 disposée à la surface de ladite partie supérieure 10 et laissant apparaître notamment un ampèremètre 15, un commutateur lumineux secteur 16 et un clavier de commande 17 à plusieurs positions. Le dispositif de commande électrique est relié au dispositif d'entraînement 5 de la mise en rotation de la cathode. Le dispositif électrique de commande est en outre relié à une prise de courant 23, destinée à recevoir un câble 22 pour connexion à une source de courant électrique. Le passage du courant électrique du dispositif de commande 13 aux anodes 3 se fait par l'intermédiaire d'un cerclage métallique 18 disposé autour de la cuve, à la partie supérieure de la cuve, ledit cerclage étant connecté au dipositif de commande électrique 13 par l'intermédiaire d'un câble électrique 19.The upper part 10 comprises the electrical control device 13 of the device, secured to a control plate 14 disposed on the surface of said upper part 10 and revealing in particular an ammeter 15, a light switch sector 16 and a keyboard for control 17 in several positions. The electrical control device is connected to the drive device 5 for rotating the cathode. The electrical control device is also connected to a power outlet 23, intended to receive a cable 22 for connection to a source of electrical current. The passage of the electric current from the control device 13 to the anodes 3 is done by means of a metal strapping 18 disposed around the tank, at the upper part of the tank, said strapping being connected to the electrical control device 13 by through an electric cable 19.

La mise en rotation de la cathode crée un courant à l'intérieur de la solution et le métal contenu dans la solution à traiter se fixe sur ladite cathode cylindrique formant un dépôt métallique solide à sa surface. Des analyses exécutées par un organisme officiel ont permis de montrer qu'un tel appareil, utilisé pour l'extraction de l'argent contenu dans une solution de liquide fixateur, fonctionne avec un rendement de plus 99 %.The rotation of the cathode creates a current inside the solution and the metal contained in the solution to be treated is fixed on said cylindrical cathode forming a solid metallic deposit on its surface. Analysis carried out by an official body made it possible to show that such a device, used for the extraction of silver contained in a solution of fixing liquid, functions with a yield of more than 99%.

L'appareil peut être réalisé en différentes grandeurs, la cuve 1 pouvant par exemple être réalisée selon des dimensions de 22/22/42 centimètres, pour une capacité de 6 litres ou de 30/30/78 centimètres pour une capacité de 40 litres. Dans cette dernière version, la cathode cylindrique peut avoir les dimensions suivantes : épaisseur 1,5 millimètre, diamètre extérieur 178 millimètres, hauteur 330 millimètres. Bien entendu, selon les besoins, l'appareil récupérateur peut être réalisé selon de toutes autres dimensions.The device can be produced in different sizes, the tank 1 can for example be produced in dimensions of 22/22/42 centimeters, for a capacity of 6 liters or 30/30/78 centimeters for a capacity of 40 liters. In this latest version, the cylindrical cathode can have the following dimensions: thickness 1.5 millimeters, outside diameter 178 millimeters, height 330 millimeters. Of course, as required, the recovery device can be made according to any other dimensions.

L'appareil peut fonctionner soit en système intermittent, le réservoir étant rempli à intervalles lorsque la nécessité s'en fait sentir, soit en système continu, l'appareil étant alors directement raccordé, par exemple, à l'appareil contenant la solution de révélateur des pellicules photographiques ou à la réserve des produits fixateurs usagés. A cet effet, la cuve comporte deux orifices, soit un orifice d'alimentation 20 disposé à la partie inférieure de la cuve et un orifice d'évacuation 21 disposé à sa partie supérieure. L'appareil récupératuer peut en outre être pourvu d'un temporisateur permettant un arrêt automatique de l'appareil après un temps d'utilisation programmé à l'avance.The device can operate either in an intermittent system, the reservoir being filled at intervals when the need arises, or in a continuous system, the device then being directly connected, for example, to the device containing the developer solution photographic film or to reserve used fixing products. For this purpose, the tank has two openings, namely a supply orifice 20 arranged at the bottom of the tank and a discharge orifice 21 arranged at its upper part. The device to recover can also be provided with a timer allowing an automatic shutdown of the device after a time of use programmed in advance.

L'appareil décrit ci-dessus d'une contenance de 6 litres de solution permet d'extraire en sept heures environ l'argent contenu dans la solution pour une concentration moyenne de 6 grammes par litre. Dans le cas de la cuve de 40 litres, pour une même concentration moyenne de 6 grammes par litre, l'extraction dure environ 8 heures. Après extraction, il suffit de déposer la partie supérieure 10 et de retirer la cathode 4, l'argent déposé sur le cylindre se détachant simplement en laissant sécher le cylindre et en le frappant par exemple avec un marteau en plastique. L'argent ainsi récupéré est directement commercialisable.The apparatus described above with a capacity of 6 liters of solution makes it possible to extract in about seven hours the silver contained in the solution for an average concentration of 6 grams per liter. In the case of the 40 liter tank, for the same average concentration of 6 grams per liter, the extraction lasts about 8 hours. After extraction, simply remove the upper part 10 and remove the cathode 4, the silver deposited on the cylinder coming off simply by allowing the cylinder to dry and hitting it, for example with a plastic hammer. The money thus recovered is directly marketable.

Un autre avantage de l'appareil récupérateur décrit ci-dessus réside en ce que la solution de fixateur traitée est ensuite récupérable et peut ainsi être utilisée plusieurs fois.Another advantage of the recovery apparatus described above is that the treated fixative solution is then recoverable and can therefore be used several times.

Selon une forme d'exécution représentée à la figure 6 le dispositif d'entraînement destiné à entraîner la cathode en rotation comporte un moteur 25 couplé à un réducteur 26 agissant sur un arbre moteur 27 solidaire d'un organe d'entraînement 28. Ledit organe d'entraînement est lui-même rendu solidaire d'un axe d'entraînement 29 par l'intermédiaire de goupilles 32. Cet axe d'entraînement 29, qui est de diamètre supérieur à celui de l'axe moteur, comporte une butée à bille 30 fixée sur une plaque de support 31, ladite plaque étant destinée à être fixée au bâti de la partie supérieure de l'appareil, de façon à éviter que la partie moteur ne supporte tout le poids de la cathode, un axe de liaison 33, solidaire de la butée 30 et de l'axe d'entraînement 29 étant destiné à s'emboîter dans l'organe de suspension 11 de la cathode, une clavette 34 étant destinée à les maintenir ensemble. Bien entendu, le dispositif d'entraînement 5 peut être réalisé de toute autre façon adéquate.According to an embodiment shown in FIG. 6, the drive device intended to drive the cathode in rotation comprises a motor 25 coupled to a reduction gear 26 acting on a motor shaft 27 integral with a drive member 28. Said member drive is itself made integral with a drive shaft 29 by means of pins 32. This drive shaft 29, which is of diameter greater than that of the motor axis, comprises a ball bearing 30 fixed on a support plate 31, said plate being intended to be fixed to the frame of the upper part of the apparatus, so as to prevent the motor part from supporting the whole weight of the cathode, a connecting pin 33, integral with the stop 30 and the drive shaft 29 being intended to fit into the suspension member 11 of the cathode, a key 34 being intended to hold them together. Of course, the drive device 5 can be made in any other suitable way.

Claims (5)

Appareil récupérateur d'argent ou d'autres métaux précieux en solution dans un liquide, caractérisé en ce qu'il comporte une cuve électrolytique (1) au moins une anode (3) solidaire du bâti (2) de la cuve et au moins une cathode (4) de forme cylindrique ouverte à ses extrémités, suspendue à l'intérieur de la cuve et solidaire d'un dispositif d'entraînement (5) destiné à mettre ladite cathode en rotation autour de son axe longitudinal (6).Apparatus for recovering silver or other precious metals in solution in a liquid, characterized in that it comprises an electrolytic tank (1) at least one anode (3) integral with the frame (2) of the tank and at least one cathode (4) of cylindrical shape open at its ends, suspended inside the tank and secured to a driving device (5) intended to put said cathode in rotation around its longitudinal axis (6). Appareil selon la revendication 1, caractérisé en ce que la cuve est de forme rectangulaire et comporte quatre anodes (3) chacune d'elles étant solidaire de l'un des côtés (2) de la cuve.Apparatus according to claim 1, characterized in that the tank is of rectangular shape and comprises four anodes (3) each of them being integral with one of the sides (2) of the tank. Appareil selon l'une des revendications précédentes, caractérisé en ce que le dispositif d'entraînement comporte un moteur (25) accouplé à un réducteur (26), ledit réducteur étant monté sur un axe moteur (27) solidaire d'un organe d'entraînement (28) agissant sur un axe d'entraînement (29) de diamètre supérieur à celui de l'axe moteur et comportant une butée à bille (30) fixée sur une plaque de support (31), ladite plaque étant fixée au bâti de l'appareil, un axe de liaison (33), solidaire de l'axe d'entraînement (29), étant destiné à entraîner la cathode en rotation.Apparatus according to one of the preceding claims, characterized in that the drive device comprises a motor (25) coupled to a reduction gear (26), said reduction gear being mounted on a motor axis (27) integral with a member of drive (28) acting on a drive axis (29) of diameter greater than that of the motor axis and comprising a ball stop (30) fixed on a support plate (31), said plate being fixed to the frame of the device, a connecting pin (33), integral with the drive pin (29), being intended to drive the cathode in rotation. Appareil selon l'une des revendications précédentes, caractérisé en ce que la cuve comporte un orifice inférieur (20) et un orifice supérieur (21), destinés à un fonctionnement en continu, l'orifice inférieur étant destiné à l'alimentation de la cuve en solution à traiter, l'orifice supérieur étant destiné à l'évacuation de ladite solution.Apparatus according to one of the preceding claims, characterized in that the tank has a lower opening (20) and an upper opening (21), intended for continuous operation, the lower opening being intended for supplying the tank in solution to be treated, the upper orifice being intended for the evacuation of said solution. Appareil selon l'une des revendications précédentes, caractérisé en ce que la cathode est en métal inoxydable.Apparatus according to one of the preceding claims, characterized in that the cathode is made of stainless metal.
EP91810208A 1990-03-23 1991-03-25 Apparatus for recovering silver or other precious metals dissolved in a liquid Withdrawn EP0465401A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH98490 1990-03-23
CH984/90 1990-03-23

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EP0465401A1 true EP0465401A1 (en) 1992-01-08

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2514554C2 (en) * 2012-05-11 2014-04-27 Федеральное государственное бюджетное учреждение науки Институт неорганической химии им. А.В. Николаева Сибирского отделения Российской академии наук (ИНХ СО РАН) Method of cleaning of silver-bearing material
RU2535266C2 (en) * 2013-04-01 2014-12-10 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" Silver refining method
RU2581958C2 (en) * 2014-09-25 2016-04-20 Федеральное государственное унитарное предприятие "Горно-химический комбинат" (ФГУП "ГХК") Method of extracting silver from process nitrate solutions
RU2670117C2 (en) * 2013-09-27 2018-10-18 Текникас Реунидас, С.А. Process for the selective recovery of lead and silver and carbonate lead and silver concentrate, obtained by the method above
RU2680552C1 (en) * 2018-03-30 2019-02-22 Акционерное общество "Уралэлектромедь" Method for producing silver and platinum group metals
RU2680788C1 (en) * 2018-06-07 2019-02-26 Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" Method of processing gold-silver alloys to produce gold

Citations (3)

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Publication number Priority date Publication date Assignee Title
FR2299667A1 (en) * 1975-01-29 1976-08-27 Lakehal Denis Electrolytic cell for recovery of silver from photographic chemicals - using intense agitation and high current density
US4049512A (en) * 1975-10-31 1977-09-20 Tolle Jr Albert E Cathode structure for electrolytic apparatus employing impellers
US4530748A (en) * 1984-05-17 1985-07-23 New Horizons Manufacturing Ltd. Cell configuration for apparatus for electrolytic recovery of silver from spent photographic processing solutions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2299667A1 (en) * 1975-01-29 1976-08-27 Lakehal Denis Electrolytic cell for recovery of silver from photographic chemicals - using intense agitation and high current density
US4049512A (en) * 1975-10-31 1977-09-20 Tolle Jr Albert E Cathode structure for electrolytic apparatus employing impellers
US4530748A (en) * 1984-05-17 1985-07-23 New Horizons Manufacturing Ltd. Cell configuration for apparatus for electrolytic recovery of silver from spent photographic processing solutions

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2514554C2 (en) * 2012-05-11 2014-04-27 Федеральное государственное бюджетное учреждение науки Институт неорганической химии им. А.В. Николаева Сибирского отделения Российской академии наук (ИНХ СО РАН) Method of cleaning of silver-bearing material
RU2535266C2 (en) * 2013-04-01 2014-12-10 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" Silver refining method
RU2670117C2 (en) * 2013-09-27 2018-10-18 Текникас Реунидас, С.А. Process for the selective recovery of lead and silver and carbonate lead and silver concentrate, obtained by the method above
RU2581958C2 (en) * 2014-09-25 2016-04-20 Федеральное государственное унитарное предприятие "Горно-химический комбинат" (ФГУП "ГХК") Method of extracting silver from process nitrate solutions
RU2680552C1 (en) * 2018-03-30 2019-02-22 Акционерное общество "Уралэлектромедь" Method for producing silver and platinum group metals
RU2680788C1 (en) * 2018-06-07 2019-02-26 Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" Method of processing gold-silver alloys to produce gold

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