CN216550762U - Permanent cathode suitable for electrolysis or electrodeposition production of various metals - Google Patents

Abstract

The utility model provides a permanent cathode applicable to electrolysis or electrodeposition production of various metals, belonging to the technical field of permanent cathode manufacturing. The permanent cathode for electrolytic or electrodeposition production of various metals, provided by the utility model, solves the technical problems of low adaptability of the permanent cathode to different metals, poor adaptability of the cathode edge insulation structure, easiness in aging, complex operation and the like, and has the technical effects of strong adaptability of the permanent cathode to various metals, long service life of the cathode edge insulation structure, simplicity in operation and strong adaptability.

Description

Permanent cathode suitable for electrolysis or electrodeposition production of various metals

Technical Field

The utility model belongs to the technical field of permanent cathode manufacturing, and particularly relates to a permanent cathode suitable for electrolysis or electrodeposition production of various metals.

Background

At present, the materials of a permanent cathode used in the process of non-ferrous metal electrolysis or electrodeposition production are basically stainless steel plates or titanium plates, and the following problems are not solved when the permanent cathode is used in the metal smelting and processing industry:

firstly, the material is suitable for the production of metal with lower toughness, such as metallic copper, and nickel-cobalt metal with strong toughness can only be used for producing a pure metal sheet with high purity by electrolysis/electrodeposition firstly, producing a metal sheet with the thickness of only about 0.5-1mm (the metal sheet can be separated from a negative plate body when continuing to grow thick), then using the metal sheet to punch, nail ears, hang a conductive hook and the like to make a starting sheet, then using the pure metal sheet starting sheet as a cathode to carry out electrolysis production, and further causing the problems of short circuit and the like due to the factors of deformation, surface smoothness and the like of the starting sheet to influence technical indexes and product quality;

the clamping strips made of various plastic materials are used on the two sides and the bottom edge of the permanent cathode, so that the isolation between metals precipitated on the two sides of the cathode plate body is realized, the clamping degree of the clamping strips, the deformation and the aging in the using process, the influence on the cleaning operation of the permanent cathode plate body surface and the like are solved, the processes of disassembly, assembly, replacement, correction and the like are frequently required in the actual production and use process, and the production process has the advantages of multiple operation procedures, long process flow, high labor intensity and high production cost;

thirdly, the difficulty of the manufacturing process of the permanent cathode with the insulating mode of slotting and glue injection at the two sides and the bottom edge is high, and the metal produced at the two sides of the polar plate cannot be effectively separated; the mode of punching holes on the edge to fix the insulating material only changes the fixing mode of the holding strip, has no essential difference with the mode of the edge holding strip, and increases the operation difficulty of disassembly, assembly and replacement;

fourthly, the operation procedure is complex and the material consumption is large, which influences the production efficiency and the production cost.

Based on the above problems, with the increasing requirements of industrial production technical indexes and processing costs, it is necessary to research a permanent cathode suitable for the electrolysis or electrodeposition production of various metals.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a permanent cathode suitable for electrolysis or electrodeposition production of various metals, and aims to solve the technical problems that the permanent cathode is low in adaptability to various metals, and insulating clamping strips at the edge of the cathode are complex to operate and easy to age.

In order to achieve the purpose, the utility model adopts the technical scheme that: providing a permanent cathode for use in the electrolytic or electrowinning production of a plurality of metals, comprising:

a negative plate body; and

and the insulating structure is formed on the edge of the cathode plate body and is used for electrochemically separating metal attached and disconnected on two sides of the cathode plate body.

In one possible implementation manner, the cathode plate body structure is as follows:

and forming an electroplated layer on the surface of the cathode plate body, wherein the thickness of the electroplated layer is 0.1-1mm, and the electroplated layer is used for enabling electrochemically precipitated metal to be attached to the cathode plate body.

In one possible implementation, the insulating structure is:

follow negative plate body edge interval sets up a plurality of cell bodies it has first insulator to inlay in the cell body, first insulator extends negative plate body edge for make the metal that electrochemistry was appeared attach to on the negative plate body, the metal that negative plate body both sides were appeared is separated by first insulator.

In a possible implementation manner, the groove body is a wedge-shaped groove or a step-shaped groove with a wide inner part and a narrow outer part, the width of the inside of the groove body is 0.5-1.5mm, the depth of the groove body is 2-5mm, and the distance from the first insulator to the edge of the cathode plate body is 1-5 mm.

In a possible implementation mode, the groove body and the cathode plate body can be connected into a whole through an electrolytic deposition mode.

In one possible implementation, the insulating structure is:

a plurality of grooves are arranged at intervals at the two sides and the lower edge of the cathode plate body, a second insulator is arranged in the grooves and used for separating electrochemically precipitated metal from the second insulator 5, and the grooves are connected into a whole at the positions where the second insulator is not distributed and are not separated from the cathode plate body.

In a possible implementation manner, a plurality of conical holes penetrating through two sides of the cathode plate body are formed in the cathode plate body, the outer inner diameter of each conical hole is larger than the inner diameter of each conical hole, so that metal which is electrochemically separated out of two sides of the cathode plate body is connected into a whole and is not separated from the cathode plate body, the metal on two sides of the cathode plate body is connected into a whole through the metal in the conical holes, and the metal is attached to the surface of the cathode plate body.

In one possible implementation, the cathode plate body comprises an upper edge and a lower edge, and the width of the lower edge is not greater than that of the upper edge.

In one possible implementation, the insulating structure is:

the edge of the negative plate body is provided with a plurality of third insulators at intervals, a non-insulator connected with the edge of the negative plate body is arranged between every two adjacent third insulators, and electrochemically precipitated metals are separated by the third insulators and are connected into a whole at the non-insulator position and are not separated from the negative plate body.

In a possible implementation manner, the negative plate body comprises two plate bodies or two plate bodies formed by folding one plate body, a buckle clamped between the two plate bodies and used for connecting the two plate bodies, and a fourth insulator filled between the two plate bodies.

In one possible implementation, the insulating structure is:

the edge of the negative plate body is provided with a convex tooth, the convex tooth is conical, the outer end outer diameter is larger than the inner end outer diameter, and the convex tooth is used for fixing an insulating material to realize permanent insulation of the edge of the negative plate body.

In one possible implementation, the insulating structure is:

a plurality of holes are uniformly distributed on the edge of the negative plate body, steel wires penetrate through the holes, and insulating materials can be attached to the steel wires to realize permanent insulation of the edge of the negative plate body.

The permanent cathode suitable for the electrolysis or electrodeposition production of various metals has the beneficial effects that: compared with the prior art, the permanent cathode suitable for electrolysis or electrodeposition production of various metals comprises a cathode plate body and an insulation structure, wherein under the combined action of the cathode plate body insulation structure, the insulation structure is formed on the cathode plate body and is used for enabling metals electrochemically precipitated on two sides of the cathode plate body to be attached and insulated between two sides, so that the technical problems that the permanent cathode is low in adaptability to different types of metals, poor in adaptability of the cathode edge insulation structure, easy to age, complex in operation and the like are solved, and the permanent cathode has the technical effects of strong adaptability of the permanent cathode to various metals, long service life of the cathode edge insulation structure, simplicity in operation and strong adaptability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a cathode plate body of a permanent cathode suitable for electrolysis or electrodeposition of various metals according to an embodiment of the present invention (after a first insulator is filled inside a cell body);

FIG. 2 is a schematic structural view of the cathode plate of FIG. 1 with a slot body and the first insulator not filled;

fig. 3 is a schematic view of the combination structure of the cathode plate body edge and the copper foil wrapped first insulator in fig. 2;

FIG. 4 is a schematic view of the permanent cathode material deposited by electrolysis in FIG. 3, with the two parts being formed as a unitary structure;

fig. 5 is a schematic structural view of the cathode plate in fig. 4 after the edge of the plate body is polished;

FIG. 6 is a schematic diagram of a groove structure (the dotted line inside is a part removed by grinding) on the cathode plate body of a permanent cathode suitable for electrolysis or electrodeposition of various metals according to an embodiment of the present invention;

FIG. 7 is a schematic view of the structure of FIG. 6 with the edges removed;

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a schematic view of the structure of FIG. 7 after wrapping with a second insulator;

FIG. 10 is a front view of FIG. 9;

FIG. 11 is a schematic structural diagram of a cathode plate body with a tapered hole for a permanent cathode suitable for electrolysis or electrodeposition of various metals according to an embodiment of the present invention;

FIG. 12 is a side view of one of the tapered hole configurations of FIG. 11;

FIG. 13 is a side view of an alternative tapered hole configuration of FIG. 11;

FIG. 14 is an elevational view of the body of a cathode plate adapted to a permanent cathode for use in the electrolytic or electrowinning of a variety of metals in accordance with an embodiment of the present invention;

FIG. 15 is a schematic view of the cathode plate body edge of a permanent cathode for various metal electrolysis or electrodeposition production according to an embodiment of the present invention after a third insulator and a non-insulator are provided;

FIG. 16 is a side view of a cathode plate body structure for a permanent cathode suitable for use in the electrolysis or electrodeposition of a variety of metals according to an embodiment of the present invention;

FIG. 17 is a front view of a cathode plate body structure of a permanent cathode for use in the electrolysis or electrodeposition of various metals according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a cathode plate body material of a permanent cathode suitable for various metal electrolysis or electrodeposition production, which is provided by an embodiment of the utility model, after processing treatment of discontinuous insulation of the edge part of the body of a pure titanium plate;

FIG. 19 is a schematic view of the structure of FIG. 18 after wrapping with an insulating material;

fig. 20 is a schematic structural diagram of a cathode plate body material of a permanent cathode suitable for various metal electrolysis or electrodeposition production according to an embodiment of the present invention, which is formed after the edge of the body of a 304 stainless steel plate is subjected to all insulation processing;

fig. 21 is a schematic view of the structure of fig. 20 after filling the encapsulated CPVC material;

FIG. 22 is a front view of the edge structure of the cathode plate body for a permanent cathode suitable for the electrolysis or electrodeposition of various metals according to an embodiment of the present invention;

FIG. 23 is a top view of FIG. 22;

fig. 24 is a front view of the edge structure of the cathode plate body of a permanent cathode for multiple metal electrolysis or electrodeposition production according to an embodiment of the present invention.

Description of reference numerals:

1. a negative plate body; 11. an upper edge; 12. a lower edge; 13. a plate body; 14. buckling; 15. a fourth insulator; 2. a trough body; 3. a first insulator; 4. a groove; 5. a second insulator; 6. a tapered hole; 7. a conductive rod; 8. a third insulator; 9. a non-insulator; 10. a convex tooth; 110. an aperture; 120. a steel wire.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 21, a description will now be given of a permanent cathode suitable for the electrolytic or electrowinning production of various metals according to the present invention. The permanent cathode suitable for electrolysis or electrodeposition production of various metals comprises a cathode plate body 1 and an insulating structure, wherein the insulating structure is formed on the edge of the cathode plate body 1 and is used for electrochemically separating out metal attached and not connected to two sides of the cathode plate body 1.

Compared with the prior art, the permanent cathode suitable for electrolysis or electrodeposition production of various metals comprises a cathode plate body 1 and an insulation structure, wherein the insulation structure is formed on the cathode plate body 1 and is used for enabling metals electrochemically precipitated on two sides of the cathode plate body 1 to be attached or not connected, so that the technical problems that the permanent cathode is low in adaptability to different metals, poor in adaptability of an insulation structure at the edge of the cathode, easy to age, complex in operation and the like are solved, and the permanent cathode has the technical effects that the permanent cathode is strong in adaptability to various metals, and the insulation structure at the edge of the cathode is long in service life, simple in operation and strong in adaptability.

Through increasing insulation system on negative plate board body 1, can be applicable to various metal electrolysis/electrodeposition production, through the processing to negative plate board body 1, fixed insulating material realizes the long-term effective insulation of limit portion, strong adaptability, simplified operation, durable, low in production cost. The processing of the cathode plate body 1 described later can be performed by grinding, laser cutting, milling, or the like.

In some embodiments, referring to fig. 1 to 21, the cathode plate body 1 has the following structure: an electroplating layer is formed on the surface of the negative plate body 1, the thickness of the electroplating layer is 0.1-1mm, and metal which is electrochemically precipitated is attached to the negative plate body 1. The surface of the cathode plate body 1 is treated in an electroplating mode, so that the content of product metal in the surface alloy is increased. The electroplating cathode is characterized by being suitable for permanent cathodes used in various metal electrolysis/electrodeposition smelting processes.

In some embodiments, referring to fig. 1 to 21, the insulating structure is: set up a plurality of cell bodies 2 along 1 marginal interval of negative plate body, it has first insulator 3 to inlay in cell body 2, and first insulator 3 extends negative plate body 1 edge for make the metal that the electrochemistry was appeared adhere to on negative plate body 1, the metal that negative plate body 1 both sides were appeared is separated by first insulator 3. The groove body 2 is processed by grinding, laser cutting, milling and other methods. The first insulator 3 is an insulating material.

In some embodiments, referring to fig. 1 to 21, the groove body 2 is a wedge-shaped groove or a step-shaped groove with a wide inner part and a narrow outer part, the inner width of the groove body 2 is 0.5-1.5mm, the depth is 2-5mm, and the first insulator 3 extends out of the edge of the cathode plate body 1 by a distance of 1-5 mm. The dimensions of the wedge-shaped groove and the first insulator 3 may vary to a certain extent depending on the specification of the cathode plate body 1. The stepped groove is a groove stepped in the depth direction in the tank body 2.

In some embodiments, referring to fig. 1 to 21, the tank 2 and the cathode plate body 1 can be connected into a whole by electrodeposition. Specifically, the first insulator 3 is wrapped in the tank body 2, the wedge-shaped tank and the negative plate body 1 are integrated through the mode that the edge of the negative plate body 1 is combined with the copper foil wrapping insulating material through the edge of the negative plate body 1, and the negative plate body 1 is supplemented through electrolysis to form the edge of the negative plate body, and the wedge-shaped tank and the negative plate body can be connected into a whole through other connection modes in the prior art. In order to ensure the strength of the processed portion, the parameters such as the thickness of the edge portion of the cathode plate body 1 and the like may be appropriately larger than the body of the cathode plate body 1 without affecting the use. If the edge of the cathode plate body 1 protrudes out of the cathode plate body 1, the cathode plate body can be cleaned and trimmed by polishing, milling and the like, and fig. 4 shows an effect diagram after trimming.

In some embodiments, referring to fig. 1 to 21, the insulating structure is: a plurality of grooves 4 are arranged at intervals at the two sides and the lower edge of the cathode plate body 1, second insulators 5 are arranged in the grooves 4, and the electrochemically precipitated metals are separated by the second insulators 5 and are connected into a whole at the positions where the second insulators 5 are not distributed so as not to be separated from the cathode plate body 1. The side part of the negative plate body 1 can be processed by grinding, cutting, milling and the like, so that the edge thickness of the negative plate body 1 is properly thinned, a groove 4 is processed at the edge of the negative plate body 1, the form of the groove 4 is not limited, and the groove 4 can fix the second insulator 5. The second insulator 5 is an insulating material, and when in actual processing, the second insulator 5 wraps the cathode plate body 1 and is fastened on the edge of the cathode, the second insulator 5 can be positioned on the same plane with the cathode plate body 1 and can also be higher than the cathode plate body 1, the second insulator 5 is clamped by the groove 4, a gap is not formed between the second insulator and the cathode, and the insulation of products on two sides of the cathode plate body 1 in the using process is realized.

In some embodiments, referring to fig. 1 to 21, a plurality of tapered holes 6 are formed in the cathode plate 1 to penetrate through both sides of the cathode plate 1, the outside inner diameter of the tapered holes 6 is larger than the inside inner diameter of the tapered holes 6, so that metals electrochemically precipitated on both sides of the cathode plate 1 are connected into a whole and are not separated from the cathode plate 1, the metals on both sides of the cathode plate 1 are connected into a whole through the metals in the tapered holes 6, and the metals are attached to the surface of the cathode plate 1. The metals on the two sides of the cathode are connected into a whole through the tapered hole 6 penetrating through the plate body 1 of the cathode plate, so that the metals on the two sides are tightly adhered to the surface of the permanent cathode. The conical hole 6 does not affect the stability of the product quality in the production process, and is convenient for fracture and continuous production operation.

Specifically, the upper part of the cathode plate body 1 is provided with a conductive rod 7.

In some embodiments, referring to fig. 1 to 21, the cathode plate body 1 includes an upper edge 11 and a lower edge 12, and the width of the lower edge 12 is not greater than the width of the upper edge 11. The structure and the style of the cathode plate body 1 can be various, and the cathode plate body 1 can be selected to be the structure or the style that the edge has no insulating material, the edge is smooth, and the width of the lower edge 12 is not more than that of the upper edge 11, as shown in fig. 14.

In some embodiments, referring to fig. 1 to 21, the insulating structure is: a plurality of third insulators 8 are arranged at intervals at the edge of the cathode plate body 1, a non-insulator 9 connected with the edge of the cathode plate body 1 is arranged between every two adjacent third insulators 8, and electrochemically precipitated metal is attached to the non-insulator 9 and separated by the third insulators 8, is connected into a whole at the position of the non-insulator 9 and is not separated from the cathode plate body 1. Except the structure that sets up bell mouth 6 above-mentioned, can also realize through the mode that sets up the discontinuous connection of insulating limit portion at negative plate body 1 edge, the scheme in this embodiment promptly, insulating and uninsulated alternate setting form discontinuous insulating structure, then the metal of negative pole both sides passes through the multiple spot connection of edge uninsulated position, forms wholly and closely fixes on negative plate body 1. It will be appreciated that the third insulator 8 and the non-insulator 9 are provided on the edge of the cathode plate body 1 in an alternating manner.

In some embodiments, referring to fig. 1 to 21, the cathode plate body 1 includes two plate bodies 13, a clip 14 interposed between the two plate bodies 13 and used for connecting the two plate bodies 13, and a fourth insulator 15 filled between the two plate bodies 13. The fourth insulator 15 between the two plate bodies 13 can be regarded as an intermediate layer, and the edge of the fourth insulator 15 can extend out of the cathode plate body 1 according to requirements. The two plate bodies 13 are connected face to face, and can be tightly connected with the fourth insulator 15 into a whole through structures such as hooks, rings, wires and the like fixed on the side surface contacted with the fourth insulator 15, and the inner side surfaces of the two plate bodies 13 are simultaneously connected with the fourth insulator 15 in the middle layer to form a permanent cathode. The snap 14 connects the two panels 13 to each other in a manner known in the art.

In this embodiment, the cathode plate body 1 is formed by folding a plate body 13, a buckle 14 is arranged in the middle of the plate body 13, and a fourth insulator 15 is filled in the middle, and one side surface of the cathode plate body 1 is closed in appearance. The third insulator 8 and the fourth insulator 15 are both insulating materials of the prior art.

In some embodiments, referring to fig. 22-24, the insulating structure is: the edge of the negative plate body 1 is provided with a convex tooth 10, the convex tooth 10 is conical, the outer end outer diameter is larger than the inner end outer diameter, and the convex tooth 10 is used for fixing an insulating material to realize permanent insulation of the edge of the negative plate body 1. The outer part of the teeth 10 in the middle of the figure is provided with two straight lines, which are indicated as insulating material, which shrinks to make it more tightly against the edge of the cathode plate body 1, and the downward facing arrows inside the teeth 10 indicate that the insulating material shrinks to form a force against the edge of the cathode plate body 1, the bottom of the figure being the edge of the cathode plate body 1. Hatching in fig. 23 indicates an insulating material.

In some embodiments, referring to fig. 24, the insulating structure is: a plurality of holes 110 are uniformly distributed on the edge of the cathode plate body 1, steel wires 120 are penetrated in the holes 110, and an insulating material can be attached to the steel wires 120 to realize permanent insulation of the edge of the cathode plate body 1. The left side limit of figure is the edge of negative plate board body 1, and the shadow line portion that is located the middle part is insulating material, and insulating material is fixed by hole 110 and steel wire 120, and insulating material wraps up the edge of negative plate board body 1, forms the edge structure that more closely pastes tight negative plate board body 1.

The utility model also has a mode of attaching various metals on the cathode plate body 1, which is as follows: the surface of the permanent cathode is treated by electroplating to increase the content of product metal in the surface alloy, and the thickness of the electroplated layer is 0.1-1 mm. The surface adhesive force of the permanent cathode is increased, so that the content of product metal contained in the whole permanent cathode or a surface alloy material reaches a certain height, and the metal precipitated by electrochemistry can form adhesive force suitable for production requirements with the surface of the cathode, for example, when the cobalt content in the cobalt electrodeposition permanent cathode plate body 1 or the total content of nickel and nickel cobalt reaches 40-85%, the adhesive force of cobalt on the permanent cathode can be effectively enhanced, so that the permanent cathode is effectively applied to the electrochemical production of cobalt.

The first embodiment is as follows:

in specific applications, such as the production of metallic cobalt, a permanent cathode used in the electrodeposition production process of metallic cobalt is made of a pure titanium plate, the size of a cathode plate body 1 is 750 × 600 × 3mm, and the edge processing mode is as follows: the processing mode of discontinuous insulation at the edge of the plate body is that the insulation part is not subjected to insulation treatment every 100mm at an interval of 5mm, as shown in figure 15.

The processing pattern can lead the metal cobalt precipitated at the two sides of the permanent cathode to be connected into a whole through the uninsulated part and to be tightly adhered with the permanent cathode, and the connected part is cut off and separated when the electrodeposition production process is finished.

The second embodiment is as follows:

a permanent cathode used in the electrolytic production of metallic nickel; the permanent cathode material is: 316L stainless steel, the size of the cathode plate body 1 is 800 × 750 × 2mm, the edge processing mode: the two sides and the lower edge 12 of the cathode plate body 1 are all subjected to insulation processing treatment, a high nickel layer with the thickness of 0.5mm is electroplated on the surface of the cathode plate body 1, the nickel content is increased from 18% to 55% when the thickness is up to 0.5mm from the surface of a 316L stainless steel cathode plate body 1, the high nickel plating layer is connected with a stainless steel plate into a whole, the formed surface containing 65% of nickel can form high-strength adhesion with metal nickel in the electrolytic process, and cannot be automatically separated, when the electrolytic process is finished, the metal nickel is separated from a permanent cathode through external force, the production of electrolytic nickel is finished, and the permanent cathode can be continuously used.

The third concrete embodiment:

permanent cathode for use in the electrolytic production of metallic copper, permanent cathode: 304 stainless steel plate; 1 size of the negative plate body: 1060 × 990 × 3 mm; the edges of two sides of the permanent cathode plate body 1 are all subjected to insulation processing, the edges are processed to be of structures as shown in figures 19-20, the thickness of 0.8mm and the width of 5mm are milled from two sides of the edge respectively, the thickness of the edge is thinned to be 1.4mm, the width of a T-shaped platform processed on the edge is 5mm, the height of the T-shaped platform is 5mm, the thickness of an upper transverse part of the T-shaped platform is 2mm, the width of an upright post part is 3mm, the distance between the two adjacent platforms is 3mm, the finished edge structure is hot-melted and filled with high-quality CPVC hard materials, the overall thickness of the CPVC hard materials is 2-3mm higher than that of the permanent cathode plate body 1, the CPVC hard materials are 2mm wider than that of the edge, and the permanent cathode plate body 1 with permanent insulation on two sides is formed as shown in figures 19-20. In the electrolytic copper production process, the size of the electrolytic copper reaches 1060 × 980mm, the current density is high, and the product quality is stable.

The fourth concrete embodiment:

the permanent cathode used in the electrodeposition production process of the metal cobalt adopts a structure that the tapered hole 6 of the plate body and the edge part are all insulated. Permanent cathode: a pure titanium plate; 1 size of the negative plate body: 820 x 720 x 3 mm; 1 taper hole 6 of negative plate body: the distance between the centers of the holes and the edge of the plate body is 12mm, the distance between the holes is 100mm, the diameter of the large hole is 3mm, the diameter of the small hole is 1mm, and a structure with 8 holes on two sides and 6 holes on the upper edge 11 and the lower edge 12 is formed; both sides and the lower edge are machined into: as shown in the figure corresponding to the third embodiment, the insulating material is a brand new polytetrafluoroethylene material.

The fifth concrete embodiment:

a permanent cathode for the electrolytic production of metallic silver; a1500 x 650 x 1mm titanium sheet, weld the titanium wire ring with diameter 0.5mm on one side with certain density, the titanium wire ring is supported on titanium plate horizontally, weld with the position that the titanium plate contacts, then fold in the middle of longest side, the insulating layer sandwiched in the middle is 800 x 700 x 1.2mm tetrafluoro plate material, make plate body 13 reach the temperature 420 duC to melt the tetrafluoro plate through electromagnetic heating, compress plate body 13 with certain pressure, make 0.5mm titanium wire ring embed and soften the melted tetrafluoro material, make plate body 13 drop to the room temperature under keeping the pressure, the tetrafluoro material solidifies, the titanium wire ring is fastened by tetrafluoro material, the titanium plate forms an organic whole with middle insulating layer, tetrafluoro insulating material stretches out about 5-10mm of titanium plate from left and right sides and bottom, connect the structure of the bar again in the upper edge, make the permanent cathode for electrolytic silver production.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A permanent cathode for use in the electrolytic or electrowinning of a plurality of metals, comprising:

a negative plate body; and

and the insulating structure is formed on the edge of the cathode plate body and is used for electrochemically separating metal attached and disconnected on two sides of the cathode plate body.

2. The permanent cathode for the electrolytic or electrowinning of metals according to claim 1 wherein said cathode plate body is constructed as:

and forming an electroplated layer on the surface of the cathode plate body, wherein the thickness of the electroplated layer is 0.1-1mm, and the electroplated layer is used for enabling electrochemically precipitated metal to be attached to the cathode plate body.

3. The permanent cathode for use in the production of metals by electrolysis or electrodeposition according to claim 1 wherein the insulating structure is:

a plurality of groove bodies are arranged at intervals along the edge of the negative plate body, a first insulator is embedded in each groove body, the first insulator extends out of the edge of the negative plate body and is used for enabling electrochemically precipitated metal to be attached to the negative plate body, and the precipitated metal on two sides of the negative plate body is separated by the first insulator;

the tank body and the negative plate body can be connected into a whole in an electrolytic deposition mode.

4. The permanent cathode suitable for the electrolysis or electrodeposition of various metals as claimed in claim 3, wherein the cell body is a wedge-shaped cell or a step-shaped cell with a wide inside and a narrow outside, the inside width of the cell body is 0.5-1.5mm, the depth of the cell body is 2-5mm, and the distance of the first insulator extending out of the edge of the cathode plate body is 1-5 mm.

5. The permanent cathode for the electrolytic or electrowinning of metals according to claim 1 wherein said insulating structure is:

a plurality of grooves are arranged at intervals at the two sides and the lower edge of the cathode plate body, a second insulator is arranged in the grooves and used for separating electrochemically precipitated metal from the second insulator, and the grooves are connected into a whole at the positions where the second insulator is not distributed and are not separated from the cathode plate body.

6. The permanent cathode for the multiple metal electrolysis or electrodeposition production according to claim 1, wherein the cathode plate body is:

a plurality of conical holes penetrating through two sides of the cathode plate body are formed in the cathode plate body, the inner diameter of the outer side of each conical hole is larger than the inner diameter of the inner side of each conical hole, so that metals electrochemically precipitated on two sides of the cathode plate body are connected into a whole and are not separated from the cathode plate body, the metals on two sides of the cathode plate body are connected into a whole through the metals in the conical holes, and the metals are attached to the surface of the cathode plate body;

the negative plate body comprises an upper edge and a lower edge, the width of the lower edge is not larger than that of the upper edge, and the edge of the plate body and metal precipitated on two sides of the plate body are connected into a whole without being separated from the plate body.

7. The permanent cathode for the electrolytic or electrowinning of metals according to claim 1 wherein said insulating structure is:

the edge of the negative plate body is provided with a plurality of third insulators at intervals, a non-insulator connected with the edge of the negative plate body is arranged between every two adjacent third insulators, and electrochemically precipitated metals are separated by the third insulators and are connected into a whole at the non-insulator position and are not separated from the negative plate body.

8. The permanent cathode for the electrolysis or electrodeposition of various metals according to claim 1, wherein the cathode plate body comprises two plate bodies, a snap fit arranged between the two plate bodies for connecting the two plate bodies, and a fourth insulator filled between the two plate bodies.

9. The permanent cathode for the electrolytic or electrowinning of metals according to claim 1 wherein said insulating structure is:

the edge of the negative plate body is provided with a convex tooth, the convex tooth is conical, the outer end outer diameter is larger than the inner end outer diameter, and the convex tooth is used for fixing an insulating material to realize permanent insulation of the edge of the negative plate body.

10. The permanent cathode for the electrolytic or electrowinning of metals according to claim 1 wherein said insulating structure is:

a plurality of holes are uniformly distributed on the edge of the negative plate body, steel wires penetrate through the holes, and insulating materials can be attached to the steel wires to realize permanent insulation of the edge of the negative plate body.

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