US20160160375A1 - Electrode-rigidifying device and rigidifying system using said device - Google Patents

Electrode-rigidifying device and rigidifying system using said device Download PDF

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Publication number
US20160160375A1
US20160160375A1 US14/906,545 US201414906545A US2016160375A1 US 20160160375 A1 US20160160375 A1 US 20160160375A1 US 201414906545 A US201414906545 A US 201414906545A US 2016160375 A1 US2016160375 A1 US 2016160375A1
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Prior art keywords
electrode
extension
stiffening
anodes
fit area
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US14/906,545
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Percy Danilo Yanez Castaneda
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Individual
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/008—Current shielding devices
    • 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
    • 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
    • C25C7/02—Electrodes; Connections thereof
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/10—Electrodes, e.g. composition, counter electrode

Definitions

  • This application refers to an anode straightening, separating and stiffening system, including at least a stiffening device, preferably plastic, that improves the quality and increases the production of metallic cathodes obtained from electrolytic processes, thus avoiding the short-circuits that influence on the formation of nodulations on the cathode surface.
  • said system and device installed along the sides of each anode increases the efficiency of the electric current and extends the time of use of anodes, thus settling part of the issues existing in the electrolytic processes.
  • anode plates are used, which are initially flat, straight or vertical. Said anodes, mainly manufactured in lead or in any other proper material for the process, undergo degradation due to the corrosive action of the hot acid electrolyte where they are immersed.
  • the anodes oxidize, with the anode becoming thinner from the gradual release of the oxide formed on its surface. Then, by losing thickness, the properties of the anodic plates change, such as their mechanic properties, being liable to strain, for example concave buckling, losing its original verticality.
  • the anode strain results in an inefficient operation thereof, because a strained anode tends to reduce its separation, or simply to join to one or both adjacent cathodes. Said separation or contact reduction facilitates the production of short-circuits in the cathodes to be harvested, which give rise to nodules, malformations or “grains”, thus resulting in losses in the production of cathodes due to nodulation and efficiency loss of the current.
  • the anodes currently used in the electric refining or electro-winning processes become corroded, thinned and strained due to use and corrosion from the hot acid electrolyte, thus losing verticality and, as a consequence, generating micro-circuits due to the approaching thereof to one or both adjacent cathodes.
  • Said devices are installed in the anodes, so that to provide contact and sliding surfaces keeping a uniform distance between the adjacent anodes and cathodes, out of facilitating the introduction and removal of electrodes during the common operations performed in the electrolytic systems.
  • said devices only allow to mitigating the effects of buckling, i.e. without making the anodes stiff; therefore, short-circuits equally produce when the anodes degrade and, consequently, strain.
  • the main problem solved by this invention is to straight and stiff anodes by keeping them vertical, avoiding buckling and, also, being able to keep the greatest distance between the anode and the cathode along the full length in an equidistant way, with the percentage of rejections due to nodulations being reduced to 1 and 2% and, therefore, improving the quality and production of cathodes.
  • the devices known in the art do not allow to solving the problems from the strain of the anodic plates integrally, i.e. keeping the anodes stiff and totally vertical, while an equidistant separation between them and the cathodes exists, thus avoiding short-circuits and the formation of nodulations that affect the quality and production of electro-won electrodes.
  • the present invention proposes a system and a device to straighten and stiffen during its use, while keeping the separation thereof with respect to the adjacent cathodes, thus avoiding the short-circuits that cause the nodulations.
  • This system consists in implementing at least a stiffening device, made up by a stiff, elongated, monolithic body, preferably plastic, installed along a great portion of the peripheral edges of an electrode, preferably along the side walls of the anodic plates, where said device has an inner rectangular section that produces a tight fit to the thickness of the anodic plate in most length thereof, at least above 50% on its greater side, allowing to straightening and stiffening said plate.
  • the external shape of the invention's device that mainly consists in two inclined planes forming a “V”—out of giving stiffness to the anode allows to efficiently separating the anode from the cathode, avoiding the micro-shortcircuits totally, i.e. separating and stiffening at the same time the anodic plates.
  • the device has other characteristics that favor electrodepositing, as well as facilitating the operation of electrodes during their use.
  • the stiffening system and device of the invention allows to solving the issues of the prior art thanks to the reduction of the micro-shortcircuits generated by nodulations, having an influence on an increased efficiency of the electrolytic cells of at least 2%, this making it possible the production of more high quality cathodes, without nodulations.
  • the most important advantage of the invention is that the characteristics of the system and device cause the increase of production and quality of the cathodes harvested by 3% to 5%, as well as an increase in the efficiency of current of at least 2%, added to the extension of the useful life of anodes by at least 20%, which are factors with high incidence on electrodepositing.
  • FIG. 1 shows an isometric view of a preferred embodiment of the invention's stiffening system.
  • FIGS. 2 a , 2 b and 2 c show a preferred embodiment of the stiffening device by deploying on a plane the rear, front and side projections, respectively.
  • FIGS. 3 and 3 b show an isometric view of the cross-section of the stiffening device according to a preferred embodiment of the invention, along with a cut-away drawing of the cross-section of said device, respectively.
  • FIG. 4 shows an isometric view of a set of anodes of a cell having the invention's stiffening system installed according to a preferred embodiment.
  • FIG. 5 shows a scheme of a cut-away drawing of the way the stiffening device operates with respect to the separation between anodes and cathodes.
  • FIG. 6 shows an isometric view of the inclined planes present on the ends of the stiffening device according to an embodiment thereof.
  • FIGS. 7 a and 7 b show an isometric view of an embodiment of the stiffening device of the invention along with a cut-away drawing of the cross-section of said device, respectively.
  • FIGS. 8 a and 8 b show a plan view and side projection, respectively, of an embodiment of the invention, where the stiffening device incorporates anode-separating elements.
  • FIGS. 9 a and 9 b show an isometric view of the rear projection, respectively, of a stiffening system with the device of FIG. 8 in a set of anodes.
  • FIG. 10 shows an isometric view of an embodiment of the invention's stiffening system including at least a ring-type central separating device along with a stiffening device.
  • FIGS. 11 a , 11 b and 11 c show rear, front and side views, respectively, of an embodiment of the invention's stiffening device.
  • FIGS. 12 a and 12 b show an isometric view of an embodiment of the invention's stiffening device along with a cross-section, respectively, that includes reinforcement in the fit area with the anode.
  • the present invention consists in a stiffening device and its incorporation to a stiffening system allowing to stiffening and keeping an anodic plate straight in its whole extension, while allowing keeping equidistant separation along the whole anode with respect to adjacent cathodes.
  • Said system and device allows to reducing the formation of nodulations in the electric cathodes deposited by avoiding the formation of short-circuits originating in the reduces separation between anode and cathode, in addition to increasing the useful life of anodes by preventing their strain from the on-going degradation they are subject to during the operation in the electrolytic means.
  • FIG. 1 shows an embodiment of the stiffening system incorporating stiffening devices 2 , two in particular, installed on the side 5 of an anodic plate 1 along most of the extension of said sides 5 , covering at least 50% of the extension of said side or preferably between 50 and 100% of said sides, where in an embodiment the whole extension of the greater side of the electrode is covered.
  • said stiffening devices 2 include inclined planes 3 , as detailed in FIG. 6 , located on at least one of the edges of the stiffening device 2 over the side walls or planes 4 of said device. Said inclined planes 3 facilitate the operation with the electrodes by allowing the proper location of them thanks to the sliding occurring between the edges of an electrode and said inclined planes 3 during the removal or entering to the electrolytic cell.
  • the inclined planes prevent them to get in contact during said operations and, therefore, to become damaged from said contact.
  • the stiffening devices 2 have inclined planes 3 in both sides of the upper end and in both sides of the lower end of said device, as shown in FIG. 1 , thus facilitating that the electrodes may freely slide over said planes both in the removal and the entering of cathodes and/or anodes of the electrolytic cell.
  • FIGS. 2 a , 2 b and 2 c a stiffening device can be seen according to a preferred embodiment of the invention, where said device has inclined planes 3 in both ends of the device 2 .
  • FIGS. 2 a , 2 b and 2 c showing the rear, front and side view of the stiffening device respectively, allow to evidencing its triangular configuration, with the rear portion being wider than the front portion.
  • said figure exposes the fastening holes 6 located in the front end of the stiffening device 2 along the extension thereof. Said fastening holes 6 allow to firmly fastening the stiffening device 2 to the side 5 of anode 1 using fastening means that are not shown in the figure.
  • FIGS. 3 a and 3 b show schematic views allowing to seeing the configuration of the stiffening device 2 in further detail.
  • said device has inclined side walls under the shape of “V” defining an equidistant angle with respect to the cross-symmetry axis of the stiffening device 2 and describing a triangular configuration as shown in FIG. 3 b .
  • the side inclined walls 4 define that the stiffening device 2 has a triangular cross-section with the rear portion being wider than the front portion and where said section, in particular the rear portion, is in charge of keeping the proper separation between anodes and cathodes.
  • the inclined side walls 4 join in the front center of the stiffening device 2 in order to form a fit area 7 with a square or rectangular cross-section, preferably arranged along most of the front extension of said device, more preferably in its whole front extension.
  • the fit area 7 allows that most of the side 5 of anode 1 is tightly adjusted to said fit area 7 , covering at least 50% of said side or between 50% and 100%, thus providing enough surface for the fastening holes 6 that are preferably present on the sides of said fit area can set fastening points of anode 1 to the stiffening device 2 , thus making the anodic plate stiff.
  • one embodiment of the invention has a fit area 7 with tapered ends 8 . Said tapered ends 8 favor electrodepositing by exposing in a wide angle both surfaces of the anodic plate toward the adjacent cathodes, which facilitates the circulation of current between the electrodes and through the electrolytic means.
  • FIG. 4 shows a preferred embodiment of the invention's system, where stiffening devices 2 are installed in most of both sides 5 of a set of anodes 1 , where said devices cover at least 50% of the extension of said sides 5 or preferably between 50% and 100%, covering in one embodiment the whole extension of said sides.
  • stiffening devices 2 are installed in most of both sides 5 of a set of anodes 1 , where said devices cover at least 50% of the extension of said sides 5 or preferably between 50% and 100%, covering in one embodiment the whole extension of said sides.
  • FIG. 5 shows a scheme of the position occupied by anodes 1 , using the stiffening device 2 along with cathodes 9 , using edge strips 10 .
  • the stiffening device sets an equidistant separation between anode 1 and cathode 9 , preventing this to change both along the electrode and while the anode is degraded thanks to the stiffening effect. Said separation, along with the effect of avoiding the strain of the anodic plate, allows to reducing the occurrence of short-circuits influencing on the formation of nodulations and, therefore, increasing the production of high-quality cathodes.
  • FIGS. 7 a and 7 b show an embodiment of the invention comprising geometric characteristics of the stiffening device 2 that facilitate the passing of the current line through the different openings 11 that can be found along the device.
  • the embodiment shown in FIGS. 7 a and 7 b describe a discontinuous fit area, i.e. with openings 11 that allow to exposing a greater area of the anode for the purposes of providing a greater area for the circulation of current between the anode and cathode through an electrolytic means, while the stiffening effect provided by the device of the invention remains.
  • FIGS. 8 a and 8 b show another embodiment of the invention that includes separating elements 12 located on one or both sides or inclined walls of the stiffening device, preferably in their rear portion, where in a preferred embodiment said separating elements 12 are integral part of said device.
  • the main characteristics of the separating elements 12 are set for the contact area between anodes, so that the separation between two anodes is always constant and, therefore, the cathode located between anodes having a stiffening device 2 with separating elements 12 has a constant separation between adjacent anodes.
  • FIGS. 9 a and 9 b show an embodiment of the invention's system comprising the use of a stiffening device 2 with separating elements 12 , being it possible to appreciate the contact between said separating elements belonging to stiffening devices located in adjacent anodes.
  • said separating elements 12 can be located along the whole rear extension of the stiffening device or at least in part of said extension, as it can be noted in FIG. 8 b .
  • said separating elements 12 are located at the center of the rear longitudinal extension of the stiffening agent 2 , so that to provide a balanced contact surface between anodes as shown in FIGS. 9 a and 9 b.
  • FIG. 10 shows an embodiment of the invention's system that, out of incorporating stiffening devices 2 on the sides of each anode 1 , incorporates at least one central separating device 13 and there can be more of said devices in the cross-section extension of anode 1 .
  • an embodiment of the central separating device 12 consists in a continuous ring surrounding the anode by both faces, both its upper portion by passing over the supporting bar and its lower edge.
  • another embodiment of the central separating device 13 comprises a ring selected in its lower portion as a clamp, where this kind of device can be easily installed in the anode by inserting it from its bottom portion without the need of fastening both faces of the device.
  • the central separating devices 13 strengthen the stiffening characteristics of the stiffening devices 2 , being useful in the case of anodes that present high wear and/or in anodes of great cross-section extension.
  • the central separating device 13 has fastening holes 6 along its extension, as well as in the fit area 7 of the stiffening device 2 , which allow to fastening the central separating device 13 to the anode surface, as well as joining the components of said device, specifically in its lower portion in the case of devices of the continuous ring type.
  • FIGS. 11 a , 11 b and 11 c show an embodiment of the stiffening device 2 comprising a variable geometric configuration along the longitudinal extension of the device, defining a variable cross-section along said extension.
  • a variable cross-section of the stiffening device 2 defined by a side variable inclined wall 4 facilitates the circulation of the electrolytic means in the same way that when using the embodiment of the discontinuous fit area 7 enlarging the exposure angle of the electrode surface. This—by facilitating the circulation of the electrolyte—allows to improving the passing of current without interrupting the flow lines and favoring the settlement of metal in the cathode.
  • FIGS. 12 a and 12 b show an embodiment of the stiffening device 2 where the fit area 2 , formed by the joining of the inclined side walls 4 in the form of “V”, has been reinforced.
  • the fit area 7 does not project from the joining of the inclined side walls 4 as in the invention's preferred embodiment, but it consists in a bore or groove of rectangular or square cross-section arranged within the side walls of the device located in the symmetry axis of the cross-section thereof, specifically in its front portion.
  • an embodiment of the stiffened device according to the embodiment, as well as of the system incorporating at least one of those devices, has a lower spring of triangular shape, preferably incorporated to the device, which has a basis that, depending on the dimensions of the electrolytic cell, gets in contact with the bottom of said cell, offering higher stability to the anodes.
  • said lower support has inclined walls destined to benefit the installation and deinstallation of the adjacent cathodes, preventing them to hit the lower portion of the anode.
  • any of the embodiments already presented of the stiffening device and, therefore, of the stiffening system, consisting for example in a combination of one or more characteristics as shown above and/or any component known in the art, is considered within the protection scope of this application.

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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)
  • Spark Plugs (AREA)
US14/906,545 2013-07-22 2014-06-19 Electrode-rigidifying device and rigidifying system using said device Abandoned US20160160375A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CL2099-2013 2013-07-22
CL2013002099A CL2013002099A1 (es) 2013-07-22 2013-07-22 Dispositivo rigidizador de electrodos que comprende un cuerpo monolitico rigido de paredes laterales inclinadas que configuran una seccion transversal de forma triangular, en donde dichas paredes laterales se juntan en la parte frontal del dispositivo formando una zona de calce dispuesta para alojar el borde periferico de un electrodo; sistema rigidizador.
PCT/CL2014/000030 WO2015010220A2 (es) 2013-07-22 2014-06-19 Dispositivo rigidizador de electrodos y sistema rigidizador que utiliza dicho dispositivo

Related Parent Applications (1)

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PCT/CL2014/000030 A-371-Of-International WO2015010220A2 (es) 2013-07-22 2014-06-19 Dispositivo rigidizador de electrodos y sistema rigidizador que utiliza dicho dispositivo

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US16/102,718 Continuation-In-Part US20190078223A1 (en) 2013-07-22 2018-08-13 Anode-stiffening device and stiffening system that uses said device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107287626A (zh) * 2017-08-11 2017-10-24 杭州帝洛森科技有限公司 一种防短路的阳极板及应用其的电解装置
CN114746582A (zh) * 2019-10-10 2022-07-12 P·D·亚内斯·卡斯塔内达 用于金属电沉积的优化装置以及系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CL2016001108A1 (es) * 2016-05-09 2017-03-10 Pl Copper Spa Revestimiento solido para ánodos de electro obtención el cual posee partes laterales, inferiores y superior frontal para cubrir e impedir la conductividad de los bordes del ánodo y además comprende partes laterales e inferiores accesorias que mantienen un espaciamiento entre los ánodos y cátodos.
CL2018000453A1 (es) * 2018-02-20 2018-05-11 Edgardo Salazar Soto Boris Sistema modular de centrado-alineación de electrodos y cubre-bordes permanentes en celdas electrolíticas.

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US3997421A (en) * 1976-02-02 1976-12-14 Cominco Ltd. Top-mounted anode spacer clip
US4619751A (en) * 1985-04-24 1986-10-28 Robinson Douglas J Anode insulator for electrolytic cell
JPH0713315B2 (ja) * 1987-04-10 1995-02-15 三菱マテリアル株式会社 極板型枠
US5762776A (en) * 1997-02-18 1998-06-09 Quadna, Inc. Spacer for electrodes
US9150974B2 (en) * 2011-02-16 2015-10-06 Freeport Minerals Corporation Anode assembly, system including the assembly, and method of using same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107287626A (zh) * 2017-08-11 2017-10-24 杭州帝洛森科技有限公司 一种防短路的阳极板及应用其的电解装置
CN114746582A (zh) * 2019-10-10 2022-07-12 P·D·亚内斯·卡斯塔内达 用于金属电沉积的优化装置以及系统

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CL2013002099A1 (es) 2014-02-14
WO2015010220A3 (es) 2015-03-19
WO2015010220A2 (es) 2015-01-29

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