• 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:
    The present utility model relates to an improvement to the lateral protection (160) for cathodes (1) used in the electrodeposition of zinc in electrolytic cells (3), the cathode (1) having a plate (10) having a thickness (ec) and first and second lateral edges (17), and a bar (20) attached to the upper portion of the plate (10), the lateral protection comprising a profile (60) having a thickness (eP) and means for attaching the profile to the first and second lateral edges (17) of the plate (10), the useable width of the zinc deposition surface (Lz) being equal to the surface width (LT) of the plate.
    公开号:ES2779774A2
    申请号:ES201990060
    申请日:2016-12-28
    公开日:2020-08-19
    发明作者:Lucas Vilas Boas Pimentel Monteiro；Edson Lucas De Oliveira
    申请人:Cecal Tecno Ind E Comercio De Equipamentos Sob Encomenda Ltda；
    IPC主号:
    专利说明:

    [0004] TECHNICAL FIELD
    [0005] [0001] The present invention relates to an improvement of the cathode used in the process of electrodeposition of metallic zinc in electrolytic cells and, more specifically, to the lateral protection for the cathodes used in the process of electrodeposition of metallic zinc.
    [0007] STATE OF THE ART
    [0009] [0002] One of the processes used to obtain metallic zinc is electrodeposition. The installation used in this process is basically composed of a tank containing zinc sulfate diluted in an acidic aqueous solution, in which anodes and cathodes are placed alternately. Subjecting them to a difference in electric potential, the migration of the zinc ions from the solution to the surface of the cathode is caused, where a layer of metallic zinc is formed on each of the faces of the aluminum plate, which constitutes the part of the cathode that remains immersed in the solution contained in the tank. After a certain deposition time, the cathodes are removed from the tank and the zinc layers protrude from them, thus obtaining metallic zinc.
    [0011] [0003] If the zinc layer deposited on each side of the plate were attached, contouring the edge, to the layer deposited on the opposite side, removal of the zinc from the cathode would be difficult and very expensive. To prevent this from happening, protections are placed on the sides of the aluminum plate, which prevent the zinc layer from joining on one side of the plate, through the edge, to the layer on the opposite side. The function of these protections is to avoid contact between the two sides of the zinc deposited on the cathode surface.
    [0013] [0004] These protections are basically composed of polymeric material profiles fixed to the sides of the aluminum plate. Due to the technology currently in use, these profiles have a U-shaped section and are embedded in the edges of the plate. Over time, the resistance of the fixing of these profiles to the plate constitutes a critical aspect, due to the high corrosion power of the solution in which they are immersed and the loads (lateral pressure and possible impacts) that they receive. each time the cathode is removed from the tank to remove the zinc.
    [0014] [0005] The fixation is carried out through friction (pressure of the profile wings on the edges of the plate), adhesion (application of special glues and resins) and mechanical fixation (groove in the plate in which a profile 'tooth' or through bolts through the profile plate and flanges). These fixing methods may or may not add up.
    [0016] [0006] In all cases there is always an overlap of the profile wings with the main surfaces of the plate and these superimposed sections have the purpose of fixing the profiles to the plate.
    [0018] SUMMARY
    [0020] [0007] The present invention refers to an electrolytic cell cathode for the production of metallic zinc that presents a lateral protection with a new geometry and a new fixing concept, which increases the area of deposition of metallic zinc and decreases the probability of their occurrence. shock or interference.
    [0022] [0008] Therefore, an objective of the present invention is to provide an electrolytic cell cathode with lateral protection, which does not cover any part of the surface of the aluminum plate, increasing the area of the zinc deposition surface.
    [0024] [0009] Furthermore, another objective of the present invention is to provide an electrolytic cell cathode with lateral protection, which does not protrude to the surface of the aluminum plate, facilitating the removal of zinc and reducing the probability of shock or interference occurring. cause the detachment of said protection.
    [0026] [0010] The objectives of the present invention are achieved thanks to the provision of a lateral protection for a cathode of an electrolytic cell for the production of metallic zinc. The cathode includes a plate provided with a thickness and first and second lateral edges, in addition to a bar attached to the top of the plate. The side protection includes a profile with a thickness and means for fixing the profile to the first and second lateral edges of the plate. The useful width of the zinc deposition surface is equal to the surface width of the plate.
    [0028] BRIEF DESCRIPTION OF THE DRAWINGS
    [0030] [0011] The invention may be better understood through the following detailed description in full consistency with the attached figures, where:
    [0032] [0012] FIGURE 1 represents a sectional side view of an electrolytic cell.
    [0033] FIGURE 2 represents a front view of the prior art cathode.
    [0035] [0014] FIGURE 2A represents a view of detail A of the cathode with the lateral protection of the prior art.
    [0037] [0015] FIGURE 2B represents a cross-sectional view along the line B-B 'of the cathode with the side shield of the prior art.
    [0039] [0016] FIGURE 2C represents a cross-sectional view along the line C-C 'of the cathode with the lateral protection of the prior art,
    [0041] [0017] FIGURE 3 represents a front view of the cathode according to the present invention.
    [0042] [0018] FIGURE 3A represents a view of detail A of the cathode with the side protection of the present invention.
    [0044] [0019] FIGURE 3B represents a cross-sectional view along the line B-B 'of the cathode with the side shield of the present invention.
    [0046] [0020] FIGURE 3C represents a cross-sectional view along the line C-C 'of the cathode with the side shield of the present invention.
    [0048] [0021] FIGURE 3D represents a cross-sectional view along the line C-C 'of the cathode with another example of the lateral protection of the present invention.
    [0050] [0022] FIGURE 3E represents a cross-sectional view along line C-C 'of the cathode with another example of the side shield of the present invention.
    [0052] DETAILED DESCRIPTION OF THE INVENTION
    [0054] With reference to Figure 1, an electrolytic cell 3 can be seen containing a plurality of cathodes 1 and a plurality of anodes 2 arranged alternately and immersed in an electrolytic solution 4.
    [0056] [0024] Figure 2 illustrates a cathode 1 among the plurality of cathodes of the prior art illustrated in Figure 1. Each cathode 1 comprises a plate 10, preferably made of aluminum, and a bar 20 fixed to this plate 10.
    [0058] [0025] A copper contact 50 is soldered to the bar 20 to carry out the electrical conduction of the bar 20 to the electrical supply system of the electrolytic cell 3. Furthermore, the upper part of the bar 20 has claws 30 responsible for assisting in the removal of the cathode 1 within the electrolytic cell 3.
    [0060] [0026] A side protection 40 with a U-shaped profile is fixed to the first and second lateral edges 17 of the plate 10, as can be deduced from detail A, illustrated separately in Figure 2A.
    [0062] [0027] As can be seen from Figures 2A to 2C, the lateral protection 40 has the function of physically isolating the zinc accumulation of one face 11 from the zinc accumulation of the other face 12 of the plate 10, thus avoiding , the formation of a single body, which would make it impossible to remove the zinc without damaging the plate 10.
    [0064] [0028] Figures 3 to 3E of the present application illustrate a new model of lateral protection 160 provided with a profile 60 that eliminates the need for the lateral wings of the U-profile of the lateral protection 40 and, thus, the overlapping of the faces 11, 12 of the plate 10. The fixing is carried out only on the first and second lateral edges of the plate 17. The means of fixing the profile 60 to the first and second lateral edges that will be used, include fixing by adherence using glues or special resins, fixing by welding or socket or by a combination of said fixing means. In the present invention, the profile 60 of the side shields 160 is preferably made of polymeric material. However, other insulating materials can be used in the manufacture of said side shields.
    [0066] [0029] The thickness of the plate ec is determined by the distance between the surfaces 11 and 12 of the plate 10, while the thickness of the profile ep is determined by the distance between the surfaces 15 and 16 of the profile 60 of the side protection 160. As can be deduced from Figures 3B to 3E, the thickness ep is equal to the thickness eq. However, it should be made clear that the thickness of the profile of the lateral protection ep can be both greater and less than the thickness ec of the plate 10, without prejudice to the objectives of the present model.
    [0068] [0030] Figures 3C to 3E illustrate different forms that the profile of the side protection 160 can assume depending on the plate 10, used for the realization of the cathode. As can be deduced from Figure 3C, for a plate 10 with lateral edge 17 provided with a longitudinal groove, the profile 60 assumes the shape of a T, obviously always obeying that the useful width of the zinc deposition surface LZ is always equal to the width surface of the LT plate.
    [0069] [0031] For a plate 10 with flat lateral edge 17, as can be seen in Figure 3D, the profile 60 assumes a rectangular shape, which also meets the requirement that the useful width of the zinc deposition surface LZ is equal to the surface width of the LT plate.
    [0071] [0032] Finally, as shown in Figure 3E, for a plate 10 with lateral edge 17, which has a longitudinal projection, the profile 60 assumes a C-shape, in the same way, having the useful width of the deposition surface zinc LZ equal to the surface width of the LT plate. This format differs from the profile 40 of the prior art, since as can be seen in Figure 2C, the useful width of the zinc deposition surface LZ will always be less than the surface width of the LT plate.
    [0073] [0033] It should be noted that the thickness of the profile of the side protection can be less or greater than the thickness of the plate 10, provided that the useful width of the zinc deposition surface LZ is equal to the surface width of the plate LT.
    [0075] Therefore, in any of the above situations, as can be seen from Figure 3B, when viewed in conjunction with Figures 3C to 3E, the useful width of the deposition surface of zinc LZ will be equal to the surface width of the LT plate.
    [0077] Consequently, the new type of lateral protection 160 allows to eliminate the two main problems presented by the model currently in use, as shown in Figure 8 of the present application:
    [0079] - eliminating the cover, by side protection, from part of the main faces of the plate 10, allowing the entire surface of these to be available to deposit the zinc. In this way, with this new arrangement, the lateral protection 160 of the present invention increases the amount of zinc deposited, increasing the productivity of cathode 1 and, consequently, of the electrolytic cell; and
    [0081] - Eliminate the protrusion of the side protections with respect to the surface of the plates 10, which makes it easier to remove the zinc and reduces the risk of knocks or interferences that cause them to detach.
    [0083] [0036] It should be noted that the variations, modifications and changes of the invention described herein are possible for those skilled in the art, without departing from the spirit and the scope of the present invention or equivalents thereto, encompassed by the appended claims and their equivalents.
    权利要求:
    Claims (7)
    [1]
    1. Lateral protection (160) for a cathode (1) of an electrolytic cell (3) for the production of metallic zinc, the cathode (1) comprising a plate (10) has a thickness (ec) and the first and second lateral edges (17), and a bar (20) fixed to the upper part of the plate (10), the lateral protection characterized by comprising a profile (60) with a thickness (ep) and means of fixing the profile (60) At the first and second lateral edges (17) of the plate (10), the useful width of the zinc deposition surface (LZ) is equal to the surface width of the plate (LT).
    [2]
    2. Side protection (160) for electrolytic cell cathode for the production of metallic zinc according to claim 1, characterized in that the thickness (ep) of the profile (60) of the side protection is equal to the thickness of the plate (10).
    [3]
    3. Lateral protection (160) for electrolytic tank cathode for the production of metallic zinc according to claim 1, characterized in that the thickness (ep) of the profile (60) of the lateral protection is less than the thickness (ec) of plate (10).
    [4]
    4. Lateral protection (160) for electrolytic tank cathode for the production of metallic zinc according to claim 1, characterized in that the thickness (ep) of the profile (60) of the lateral protection is greater than the thickness (ec) of plate (10).
    [5]
    5. Lateral protection (160) for electrolytic tank cathode for the production of metallic zinc according to claim 1, characterized in that the means for fixing the profile (60) of the lateral protection (160) to the edges The sides (17) of the plate (10) comprise between glue adhesion, socket weld adhesion or a combination of both.
    [6]
    6.
    [7]
    7. Lateral protection (160) for electrolytic cell cathode for the production of metallic zinc according to any of claims 1 to 5, characterized in that the profile (60) is a profile of polymeric material.
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    同族专利:
    公开号 | 公开日
    WO2018119497A1|2018-07-05|
    BR112019013519A2|2020-01-07|
    ES2779774B2|2021-04-27|
    CA3063437A1|2019-12-05|
    BR112019013519B1|2022-01-18|
    MX2019007913A|2020-02-10|
    ES2779774R1|2020-10-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    ES2020729A6|1990-08-01|1991-09-01|Asturiana De Zinc Sa|Installation for removing the zinc deposited by electrolysis on aluminium plates.|
    JP2925334B2|1990-12-26|1999-07-28|川崎製鉄株式会社|Edge mask control method in electroplating|
    ES2067411B1|1993-06-18|1995-11-01|Asturiana De Zinc Sa|CATHODE FOR THE ELECTROLYTIC DEPOSITION OF IRON METALS.|
    RU2221089C1|2002-05-30|2004-01-10|Бодров Валерий Владимирович|Cathode for electrolytical applying of non-ferrous metals|
    DE102008041698A1|2008-08-29|2010-03-04|EMS Elektro Metall Schwanenmühle GmbH|Cathode for the electrolytic deposition of zinc or the like. From an electrolyte bath|
    US8052851B1|2009-01-23|2011-11-08|Steen Enterprises, LLC|Protective edging for a cathode of an electroplating system|WO2021035367A1|2019-08-28|2021-03-04|New Tech Copper Spa|Cathodic edge protection device|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    PCT/BR2016/000158|WO2018119497A1|2016-12-28|2016-12-28|Lateral protection for a cathode of an electrolytic cell for producing zinc|
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