• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Short-circuiting device for the debriding of cells in electro-obtaining copper plants. Short-circuiting device for cell debris in electro-obtaining copper, with a frame (1) insulation short-circuitor of cells having an electrolyte (2) and electrodes, and the frame (1) by means of copper connections electrically connects with a plurality of cathodes of a first cell (5) and, with a plurality of anodes of a second cell, comprising a plurality of modified cathodes (8) in the first cell (5) for the electrical connection with the frame (1) and a plurality of modified anodes (9) in the second cell (6) for electrical connection therewith, wherein said modified cathodes and anodes (8, 9) have an upper copper bar (4) at least in part of their upper contour , such that the connection of the frame (1) with the modified cathodes and anodes (8, 9) respectively is carried out by means of a copper/copper electrical contact. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2693901A1
    申请号:ES201730796
    申请日:2017-06-13
    公开日:2018-12-14
    发明作者:Gaston Eliecer PRUDANT VEGA
    申请人:Cobre Las Cruces S A U；Cobre Las Cruces Sau；
    IPC主号:
    专利说明:

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    DESCRIPTION
    Short-circuit device for cell overflow in copper electro-obtaining plants
    Technical field of the invention
    The present invention corresponds to the technical field of copper electro-obtaining plants, and in particular to a short-circuiting device for cell overflow comprising a short-circuit isolation frame thereof, where each cell has an electrolyte and some inside electrodes formed by a plurality of cathodes and a plurality of anodes arranged alternately with each other.
    Background of the Invention
    At present, copper electro-obtaining plants normally have a useful life of five years for anodes.
    The anodes and cathodes of each cell of the electro obtaining plant are at least partially submerged in an electrolyte with dissolved copper. During the electrolysis process simultaneously with the deposition of said dissolved copper on the surface of the cathodes, a degradation of the anodes is generated because they are eroded by the current. The metal ions that are formed are deposited on the cathode, but the ore particles of the anode do not form ions, so they do not deposit on the cathode and fall to the bottom of the cell, forming an accumulation at the bottom of the cell in anodic mud shape.
    Due to this, the cells must be cleaned every 5 or 6 months approximately, to maintain their operating condition in the production of quality cathodes.
    Thus, the corrosive process and natural wear suffered by the anodes during the electro-obtaining process, makes it necessary to clean or overflow the cells to remove the anodic mud that accumulates at the bottom of them.
    For the realization of this overflow, the use of a short-circuiting frame is necessary, with which to be able to previously isolate the cells to be cleaned. The
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    Installation of this frame requires electrical contacts that ensure correct electrical conductivity through the circuit, so that making an electrical connection between two cells is isolated from the passage of current to the cells arranged intermediate between them. Thus, the frame is connected on the one hand to the anodes of one of said cells and on the other hand to the cathodes of the other cell.
    In electro-copper processes, the cathodes are formed by a stainless steel plate and the cathodes by a lead plate. Both cathodes and anodes are welded to a copper bar that is coated with stainless steel. In both cases, the copper bar is exposed at the bottom of its ends, to make the contact of the cathodes and anodes with the bars of the cell and close the electrical circuit.
    Thus, since the bar is coated to prevent corrosion, the electrical contacts that take place between the short-circuit frame and the electrodes of the cells are copper-stainless steel. This is a drawback, since operational experience has shown that this type of contact has a very low electrical conductivity, producing high temperature points due to the poor electrical conductivity between the two materials, which makes it impossible to use the short-circuit frame at normal currents of operation, with limits in the range of 5 KAmperes, negatively impacting the level of production.
    In fact, this frame is a device designed with the objective of electrically isolating the cells destined for the overflow and at the same time to avoid the reduction of current during said overflow, so with this copper-stainless steel contact design when lowering the amperage of operation, its function is not being fulfilled, since it is necessary to reduce the intensity of the current and the production is significantly reduced.
    Another problem that this frame currently presents is the difficulty of achieving effective contact of the frame connections with the electrode bars, due to the small surface area of both parts. In some cases we have tried to make designs that ensure contact between the two but without good results, due to the lack of space in the contact points and the complexity in their installation and operation.
    As an example of the state of the art, reference document WO2014022937 can be mentioned.
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    Reference document WO2014022937 defines a method of manufacturing an electrolytic cathode assembly. This method comprises the attachment of a deposition plate, along an upper end thereof, to an electrically conductive suspension bar to define a joint; the formation of a protective cover comprising a lateral edge; arranging the protective cover to generally surround the suspension bar and a part of the upper end of the deposition plate to substantially enclose the joint; and injecting a corrosion resistant material into a channel between the protection cover and the suspension bar to form a substantially continuous closure that extends around the suspension bar, thereby impeding at least the flow of fluid in the cover protective on the side edge.
    It is also considered that the suspension bar is formed of copper and its protective cover is formed of stainless steel. This leads us to the problem defined above at the time of using the short-circuiting frame to isolate cells for overflow, that is, the electrical contact of the same with the electrodes will be of copper-stainless steel nature, with the disadvantages of production reduction That entails.
    Description of the invention
    The short-circuiting device for the overflow of cells in electro-obtaining copper plants proposed here, comprises a short-circuit isolation frame of the cells to be overflowed, where each cell has an electrolyte and electrodes formed by a plurality of cathodes. and a plurality of anodes arranged alternately with each other. Said frame, by means of copper connections, electrically connects a first side thereof with the plurality of cathodes of a first cell and, a second side opposite with the plurality of anodes of a second cell, electrically isolating the at least one cell disposed between said first and second cells.
    This short-circuiting device comprises a plurality of modified cathodes arranged inside the first cell for the electrical connection with the first side of the frame and a plurality of modified anodes arranged inside the second cell for the electrical connection with the second side of the same.
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    Each of these modified cathodes and anodes has an upper copper bar at least in a part of its upper contour, so that the electrical connection of the first and second lateral of the short-circuiting frame with the modified cathodes and anodes respectively is carried out by means of a contact Electric copper / copper.
    According to a preferred embodiment, said shortcircuit device comprises a first copper plate arranged transversely to the plurality of modified cathodes and on the upper copper bar thereof.
    According to a preferred embodiment, this device comprises a second copper plate arranged transversely to the plurality of modified anodes and on the upper copper bar thereof.
    According to a preferred embodiment, the upper copper bar of the modified cathodes is formed by a U-profile bar that fits into the upper contour of said cathodes.
    With the short-circuiting device for cell overflow proposed here, a significant improvement in the state of the art is obtained.
    This is so with this device it is possible to use the short-circuit frame by making an electrical contact of copper-copper nature, which has a high electrical conductivity and allows the use of the frame with normal operating currents. Thus, each time an overflow must be performed and for the placement of the frame to be short-circuited by isolating the cells to overflow, it is not necessary to reduce the intensity of the current and the rest of the circuit can continue with normal operation.
    In this way, production levels are increased with respect to the use of a short-circuit frame as it is done in the state of the art, that is, without this device proposed here.
    On the other hand, these modified electrodes are installed in the outer cells that are intended to overflow, replacing their corresponding electrodes, in order to offer a copper-copper electrical contact with the frame and once the overflow is finished, they are removed of these cells to reintroduce in them their initial electrodes. So that,
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    a complete transformation of the electrodes of the electro-obtaining ship is not necessary, but only the modification of the electrodes that are to be installed before the overflow.
    An advantage of this device is that it is possible to keep all cells in a safe position, as the short-circuit frame always works with a anode contact on one side and a cathode contact on the other side, preventing the contact cells from being in a stack position. galvanic, thus avoiding corrosion of the electrodes.
    In addition, the mechanical design of the new bars added to the modified electrodes ensures the resistance to the frame support. The design of the same allows to place and remove the frame quickly, not being necessary to use auxiliary contact devices for this purpose.
    A simple and efficient short-circuiting device is therefore achieved, which solves the drawbacks existing in the art.
    Brief description of the drawings
    In order to help a better understanding of the features of the invention, according to a preferred example of practical realization thereof, an integral part of said description is provided, a series of drawings where, with an illustrative and non-limiting nature, represented the following:
    Figure 1.- Shows a perspective view of a modified cathode of the short-circuiting device, for a preferred embodiment of the invention.
    Figures 2.1 and 2.2.- Show the respective elevation and profile views of a modified cathode of the short-circuiting device, for a preferred embodiment of the invention.
    Figure 3.- Shows a perspective view of a modified anode of the shortcircuit device, for a preferred embodiment of the invention.
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    Figures 4.1 and 4.2.- Show the respective elevation and profile views of a modified anode of the short-circuiting device, for a preferred embodiment of the invention.
    Figure 5.- Shows a schematic view of the section of the installation of the short-circuiting device in a situation of isolation of two cells (removing the first cathode from the second cell, to show the modified anode), for a preferred embodiment of the invention.
    Detailed description of a preferred embodiment of the invention
    In view of the figures provided, it can be observed that in a preferred embodiment of the invention, the short-circuiting device for the overflow of cells in electro-copper-producing plants presented here comprises a framework (1) isolation short-circuit of the cells to overflow.
    These cells have an electrolyte (2) and electrodes formed by a plurality of cathodes (3) and a plurality of anodes arranged alternately with each other.
    For its part, the shortcircuit frame (1) is electrically connected by means of copper connections on a first side (1.1) thereof with the plurality of cathodes of a first cell (5) and, it is also connected with copper connections in a second side (1.2) opposite the first, with the plurality of anodes of a second cell (6). In this way, the at least one cell disposed between said first and second cells (5, 6) is electrically isolated.
    In this preferred embodiment of the invention, as shown in Figure 5, there are two intermediate cells (7) between the first and second cells (5, 6), which are electrically isolated to allow the overflow of the same.
    The short-circuiting device proposed herein comprises a plurality of modified cathodes (8), as shown in Figures 1, 2.1 and 2.2, arranged inside the first cell (5) for the electrical connection with the first side (1.1 ) of the frame (1) and a plurality of modified anodes (9), as can be seen in Figures 3, 4.1 and 4.2, arranged inside the second cell (6) for the electrical connection with the second side ( 1.2) of it.
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    Thus, as shown in said Figures 1 to 4.2, said modified cathodes and anodes (8, 9) have an upper copper bar (4) at least in a part of their upper contour, so that the electrical connection of the first and second side (1.1, 1.2) of the frame (1) short-circuit with the modified cathodes and anodes (8, 9) respectively is performed by a copper / copper electrical contact.
    As can be seen in Figures 1, 2.1 and 2.2, in the case of modified cathodes (8) it has been considered in this embodiment, the bar (4) is arranged on a part of the upper contour thereof, while as shown in Figures 3, 4.1 and 4.2, in the case of the modified anodes (9) the bar runs along the entire upper contour of these.
    Likewise, in this preferred embodiment of the invention, in the case of modified cathodes (8), the upper bar (4) is formed by a U-profile bar that fits into the upper contour of said modified cathodes (8).
    In this preferred embodiment of the invention, the short-circuiting device comprises a first copper plate arranged transversely to the plurality of modified cathodes (8) and on the upper copper rod (4) thereof.
    Thus, when the overflow is intended, in this case of two intermediate cells (7) between a first and a second cell (5, 6), the first thing that must be done is the extraction of the normal cathodes (3) of the first cell (5), to install in place the modified cathodes (8) and the extraction of the normal anodes of the second cell (6), to install in this case the modified anodes (9). Normal electrodes are removed in two stages, so as not to interrupt the electrical circuit.
    Once the modified electrodes are installed, the shortcircuit frame (1) is installed as shown in Figure 5, making an electrical connection with them and thus obtaining an electrical isolation of the two intermediate cells (7) to start Overflow work.
    The described embodiment constitutes only an example of the present invention, therefore, the specific details, terms and phrases used herein are not to be considered as limiting, but are only to be understood as a basis for the claims and as a representative basis that provides a description
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    understandable as well as sufficient information to the person skilled in the art to apply the present invention.
    With the short-circuiting device for cell overflow presented here, significant improvements are achieved with respect to the state of the art.
    On the one hand, the use of modified electrodes facilitates a copper-copper electrical connection with the frame, so that an efficient and safe electrical contact is obtained to work at normal operating currents. This avoids having to reduce the intensity of the electric current and therefore the production reductions that this entailed are avoided.
    In addition, this device allows to elevate the elevation of the connection point of the anode, favoring the subsequent installation of the frame and avoiding possible electrical cuts.
    The use of the modified electrodes makes it possible to ensure at all times that the frame works supported by contacts with cathodes and anodes on each side of the same respectively, thus preventing any cell from working under a galvanic cell condition.
    Therefore, it is a very effective device in its application to short-circuit and isolate cells in electro-obtaining processes, with a simple, practical and safe design.
    权利要求:
    Claims (1)
    [1]
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    1- Short-circuiting device for cell overflow in copper electro-obtaining plants, comprising a frame (1) insulation short-circuit of the cells to be overflowed, where each cell has an electrolyte (2) inside and electrodes formed by a plurality of cathodes (3) and a plurality of anodes arranged alternately with each other, and where said frame (1) by means of copper connections electrically connects a first side (1.1) thereof with the plurality of cathodes of a first cell (5) and, a second side (1.2) opposite the plurality of anodes of a second cell, electrically isolating the at least one intermediate cell (7) disposed between said first and second cells (5, 6), characterized in that it comprises a plurality of modified cathodes (8) disposed within the first cell (5) for electrical connection with the first side (1.1) of the frame (1) and a plurality of modified anodes (9) arranged in the inside of the second cell (6) for the electrical connection with the second side (1.2) thereof, where each of these modified cathodes and anodes (8, 9) has an upper copper bar (4) at least in one part of its upper contour, so that the electrical connection of the first and second lateral (1.1, 1.2) of the frame (1) short-circuit with the modified cathodes and anodes (8, 9) respectively is carried out by means of a copper / copper electrical contact.
    2- Short-circuiting device for cell overflow in copper electro-obtaining plants, according to claim 1, characterized in that it comprises a first copper plate arranged transversely to the plurality of modified cathodes (8) and on the bar (4 ) copper top thereof.
    3- Short-circuiting device for cell overflow in copper electro-obtaining plants, according to any one of claims 1 and 2, characterized in that it comprises a second copper plate arranged transversely to the plurality of modified anodes (9) and over the top copper bar (4) thereof.
    4- Short-circuiting device for the overflow of cells in copper electro-obtaining plants, according to any of the preceding claims, characterized in that the upper copper bar (4) of the modified cathodes (8) is formed by a profile bar in U that fits into the upper contour of said cathodes.
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    同族专利:
    公开号 | 公开日
    ES2693901B2|2020-01-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20050126906A1|2002-01-25|2005-06-16|Mount Isa Mines Limited|Hangar bar|
    GB2474054A|2009-10-02|2011-04-06|Corner Electrical Systems Ltd G|A shorting frame for an electrowinning plant|
    法律状态:
    2018-12-14| BA2A| Patent application published|Ref document number: 2693901 Country of ref document: ES Kind code of ref document: A1 Effective date: 20181214 |
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201730796A|ES2693901B2|2017-06-13|2017-06-13|Short-circuiting device for cell overflow in copper electro-obtaining plants|ES201730796A| ES2693901B2|2017-06-13|2017-06-13|Short-circuiting device for cell overflow in copper electro-obtaining plants|
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