WO2022198370A1 - Method for stripping and splitting ductile and malleable metal attached and deposited on electrolytic cathode - Google Patents

Abstract

A method for stripping and splitting a ductile and malleable metal attached and deposited on an electrolytic cathode, comprising: calendering an electrolytic deposition metal attached to a cathode plate of the electrolytic cathode, so that the electrolytic deposition metal attached to the cathode plate is ductile and/or has the adhesion changed, and separating, from the cathode plate, the deposition metal attached to an electrolyte surface of the cathode plate or loosening the deposition metal.

Description

Method for depositing ductile metal strip openings by electrolytic cathode adhesion technical field

The present invention relates to the technical field of electrolysis, in particular to a method for depositing a ductile metal stripping opening by an electrolysis cathode.

Background technique

In electrolytically purified metal, the purified metal will be attached to the cathode plate, which needs to be peeled off. Due to the fluctuation of the electrolyte level during the electrolysis process, the attached metal will be excessively thin to thick at the waterline of the electrolyte surface, affecting the Stripping job.

There are many existing methods of peeling and opening, such as: high-frequency vibration of the cathode, making an insulating plate at the electrolyte surface waterline of the cathode plate to facilitate the opening of the peeling, etc., but there are some problems, such as: the opening rate of the peeling can only reach About 80%, the cathode plate is deformed by rapping, the life of the cathode plate is reduced, the metal is corroded and deposited between the insulating plate and the cathode plate, the insulating plate is easy to fall off, etc., which makes mechanized peeling difficult.

SUMMARY OF THE INVENTION

One object of the present invention is the method for the electrolytic cathode to deposit metal stripping openings. The present invention adopts the metal pressure extension and the change of adhesion, so that the electrolytically attached metal opens or loosens at the waterline of the electrolyte surface of the cathode plate, thereby facilitating stripping.

According to an embodiment of the present invention, a method for depositing a malleable metal strip opening by an electrolytic cathode, the method includes: calendering the electrolytically deposited metal adhered to the cathode plate of the electrolytic cathode, so that the electrolytically deposited metal adhered to the cathode plate is calendered. The deposited metal elongates and/or changes its adhesion and causes the deposited metal attached at the electrolyte level of the cathode plate to separate or loosen from the cathode plate.

According to the method for depositing extensible metal stripping openings in the electrolytic cathode according to the embodiment of the present invention, the present invention adopts the extension length of the metal pressure and the change of the adhesion force, so that the electrolytically attached metal is opened or loosened at the water line of the electrolyte surface of the cathode plate, so as to facilitate the Peel the flakes.

In addition, the method for depositing metal stripping openings by electrolytic cathode adhesion according to the above-mentioned embodiments of the present invention may also have the following additional technical features:

Optionally, the calendering of the electrolytically deposited metal attached to the cathode plate includes: using at least one pair of rolls to calender the electrolytically deposited metal attached below the electrolyte level of the cathode plate.

Optionally, the area calendered on the surface of the cathode plate is within a range of a predetermined size below the electrolyte level of the cathode plate.

Optionally, the predetermined size is in the range from the electrolyte level to 150 mm below the electrolyte level.

Optionally, the calendering of the electrolytically deposited metal is performed along a direction parallel to the conductive rods of the electrolytic cathode or along a direction perpendicular to the conductive rods of the electrolytic cathode toward the conductive rods.

Optionally, the electrodeposited metal is a calenderable metal of copper, lead, zinc or nickel.

Description of drawings

FIG. 1 is a schematic diagram of an electrolytic cathode according to an embodiment of the present invention, wherein a ductile metal is adhered and deposited on the cathode plate.

FIG. 2 is a side view of FIG. 1 .

Reference numerals: cathode plate 1, conductive rod 2, deposited metal 3, electrolyte level A.

Detailed ways

In the electrolytic purification of malleable metal, the purified malleable metal is attached to the cathode plate, and a peeling operation is required to obtain the purified malleable metal. Due to the fluctuation of the electrolyte level during the electrolysis process, a thin-to-thick transition of the adhered purified ductile metal at the electrolyte surface waterline is formed, which makes it difficult for the stripping blade to insert between the purified ductile metal and the cathode plate. You need to make an opening at the waterline to facilitate peeling. Otherwise, the stripping blade will slip out from the surface of the purified malleable metal, or the stripping blade will scratch the cathode plate, or the purified malleable metal will be scratched.

For example, in the related art, the vertical electrolytic manganese dioxide stripping device also adopts pressure rollers, but the pressure rollers need to be arranged in a staggered manner. This is because: 1. Electrolytic manganese is a brittle metal and has no ductility; 2. The pressure rollers of the electrolytic manganese peeling device need to be staggered to make the cathode plate elastically deform, so that the attached electrolytic manganese can be brittle and fall off.

The invention mainly provides a method for peeling and opening the ductile metal adhered and deposited on the cathode plate of the electrolytic cathode. Among them, this patent uses a pair of rollers to calender the electrolytically deposited ductile metal attached to the waterline of the electrolyte surface of the cathode plate, so that the deposited ductile metal attached to the cathode plate can elongate and change its adhesion, but this calendering The force does not deform the cathode plate; thus, the deposited malleable metal attached to the water line of the electrolyte surface of the cathode plate is separated or loosened from the cathode plate, and the stripping opening is realized, which is conducive to mechanized stripping.

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

1 and 2, a method for depositing metal stripping openings on a cathode plate of an electrolytic cathode according to an embodiment of the present invention, wherein the deposited metal in the present invention is mainly a malleable metal deposited on the cathode plate, and the method includes: Rolling the electrodeposited metal attached to the cathode plate, during the rolling process, the adhesion between the electrodeposited metal and the cathode plate will change, and the electrodeposited metal will be deformed and elongated, so that the adhesion on the cathode plate will be extended. Elongation and/or change in adhesion of the electrodeposited metal on the cathode plate. In addition, through the calendering treatment, the adhesion between the part of the electrolytically deposited metal located at the electrolyte level and the cathode plate can also be changed, so that the deposited metal attached to the electrolyte level of the cathode plate and the Cathode plates are detached or loose.

When there is loosening or separation between the deposited metal at the electrolyte level and the cathode plate, the knife for stripping can be inserted from the deposited metal at the electrolyte level to avoid the wedge-shaped structure of the electrodeposited metal surface from affecting the lower blade.

According to the method for attaching and depositing extensible metal stripping openings on the cathode plate according to the embodiment of the present invention, the present invention adopts the metal pressure extension length and the change of the adhesion force, so that the electrolytically attached metal is opened or loosened at the water line of the electrolyte surface of the cathode plate, so as to facilitate the Peel the flakes.

Specifically, since the outer surface of the electrodeposited metal at the electrolyte level is a wedge-shaped structure, if the electrodeposited metal at the electrolyte level is tightly attached to the cathode plate, the blade will follow this position when the knife is lowered during the stripping process. The wedge-shaped structure of the metal slips off, making it difficult to apply force, resulting in inability to insert between the electrodeposited metal and the electrolytic cathode, affecting the stripping efficiency, and possibly damaging the surface of the cathode plate. For this reason, in the present invention, the calendering treatment is adopted to loosen or loosen the electrolytically deposited metal at the electrolyte level and the cathode plate, so as to realize the opening of the electrolytically deposited metal at the electrolyte level, and the blade can be smoothly peeled off, thereby facilitating mechanical Of course, it is also suitable for manual peeling, etc.

The calendering of the electrolytically deposited metal includes: compressing the electrolytically deposited metal by means of rolling or the like, and moving the rolling structure along the direction parallel to the conductive rod of the electrolytic cathode to realize the extension of the electrolytically deposited metal, and the electrolytically deposited metal is connected to the electrolytically deposited metal. The adhesion between the cathodes changes.

Optionally, it can also be rolled along the vertical direction of the conductive rod of the electrolytic cathode toward the direction of the conductive rod, so that the electrolytically deposited metal is extended, and the adhesion between the electrolytically deposited metal and the electrolytic cathode is changed.

In some embodiments of the present invention, the calendering of the electrolytically deposited metal attached to the electrolytic cathode includes: using at least one pair of rolls to calender the electrolytically deposited metal attached below the electrolyte level of the cathode plate. The calendering treatment in this application is mainly used for loosening and separation between the electrodeposited metal and the cathode plate at the electrolyte level. Therefore, the ductility of the metal material is used to perform calendering treatment on the electrolytic cathode below the electrolyte level. , the electrodeposition metal opening at the electrolyte level can be realized.

Optionally, the area calendered on the surface of the cathode plate is located within a range of a predetermined size below the electrolyte level of the cathode plate. The calendered area is a predetermined size from the electrolyte level to below the electrolyte level, so that the metal deposited at the electrolyte level can be separated or loosened from the cathode plate, and the opening efficiency can be improved.

Wherein, the rolled area can be in the range from the electrolyte level to 150 mm below the electrolyte level, for example, the rolled area can be from the electrolyte level to 20 mm, 50 mm, 100 mm, 150 mm below the electrolyte level mm, etc., the rolled area is preferably in the range from the electrolyte level to 40 mm below the electrolyte level.

Optionally, the electrodeposited metal is a calenderable metal of copper, lead, zinc or nickel.

Some specific embodiments of the present invention are described below.

Specific Example 1

A 20mm wide pair of rollers is used to calender the electrolytically deposited extensible metal zinc attached to the cathode plate electrolyte surface waterline 40mm in the direction of the conductive rod, so that the zinc attached to the cathode plate is elongated by 0.1 ~ 0.2mm, and the adhesion can be realized. The deposited zinc at the waterline of the electrolyte surface of the cathode plate is separated or loosened from the cathode plate at the waterline of the electrolyte surface, so as to realize the opening and facilitate mechanized stripping.

Specific embodiment 2:

The electrolytically deposited zinc and the conductive rods, which are 30mm below the water line of the electrolyte on both sides of the cathode plate, are calendered in a parallel direction with a pair of rollers with a width of 30mm, so that the zinc deposited on the cathode plate is dislocated from the aluminum cathode plate, and the adhesion can be realized. The zinc deposited at the waterline of the electrolyte surface of the cathode plate is separated or loosened from the cathode plate at the waterline of the electrolyte surface to reach the opening, which is conducive to mechanized stripping.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial, The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated devices or elements. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (6)

1. A method for depositing ductile metal stripping openings by electrolysis cathode, characterized in that the method comprises:

   Calendering the electrodeposited metal attached to the electrolytic cathode, so that the electrodeposited metal attached to the cathode plate is elongated and/or the adhesion is changed, and the deposited metal attached to the electrolyte level of the cathode plate is Separated or loose from the cathode plate.
2. The method for adhering and depositing ductile metal stripping openings on an electrolytic cathode according to claim 1, wherein the rolling of the electrolytically deposited metal attached to the cathode plate comprises:

   The electrodeposited metal adhering below the electrolyte level of the cathode plate is rolled by at least one pair of rolls.
3. The method according to claim 2, characterized in that, the area rolled on the surface of the cathode plate is within a predetermined size range below the electrolyte level of the cathode plate.
4. The method for attaching and depositing a ductile metal strip opening for an electrolytic cathode according to claim 3, wherein the calendered area is in the range from the electrolyte level to 150 mm below the electrolyte level.
5. The method for depositing extensible metal stripping openings by electrolytic cathode according to any one of claims 1 to 4, wherein the rolling of the electrolytically deposited metal is carried out in a direction parallel to the conductive rods of the electrolytic cathode Or along the vertical direction of the conductive rods of the electrolytic cathodes toward the direction of the conductive rods.
6. The method for depositing ductile metal stripping openings by electrolytic cathode adhesion according to any one of claims 1-5, wherein the electrodeposited metal is a calenderable metal of copper, lead, zinc or nickel. .

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