JPS63166986A - Electrode for electrolytically refining metal and its production - Google Patents

Abstract

PURPOSE:To improve working environment and to produce the title electrode for electrolytically refining metal having a long service life with good productivity by adhering an insulating member to the desired outer peripheral part of an electrode member through a silcone rubber-based adhesive in a specified width. CONSTITUTION:A quasi-rectangular mother board 4 made of stainless steel is fixed to a holder 2, both surfaces are ground, and an adhesive is thinly applied on both faces of the upper end A of the mother board 4 adjacent to the holder. A silcone rubber-based adhesive capable of being used at ordinary temp. or a coking agent is used as the adhesive. The insulating member 6 (a vinyl chloride resin sheet, etc.) is then adhered by pressing onto the adhesive. The same adhesive is applied on both faces of both sides B and C and the bottom D of the mother board 4, and the insulating members 8, 10, and 12 having a U-shaped cross section are set thereon and bonded. By this method, the working environment is remarkably improved, and the starting sheet 1 of an excellent shape is produced with good productivity.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrode used in the electrolytic refining of metals and a method for manufacturing the same, and in particular to a mother plate electrode for manufacturing seed plates used in the electrolytic refining of metals, and a method for manufacturing the same. It concerns its manufacturing method.

′−゛ bi. BACKGROUND OF THE INVENTION Conventionally, an electrode called a seed plate has been used during electrolytic refining of metals, such as copper refining. Such a seed plate is manufactured by electrolytically attaching a high-purity copper plate to an electrode 1 as shown in FIG. 2, and then peeling the copper plate from the electrode. To briefly explain the electrode 1, the electrode 1 is formed by attaching a generally rectangular base plate 4, usually made of stainless steel, to a holder 2. Further, around the mother plate 4, that is, the upper end A1, both side surfaces B and C, and the lower end, a copper plate attached to the mother plate by electrolytic treatment is made to be easily peeled off from the mother plate 4. Insulating member 6
．． 8,1O112 is provided.

Conventionally, such an electrode 1 has been manufactured by the following method. That is, as shown in FIG. 3, first, the surface of the mother plate 4 is polished, and an adhesive is applied to the upper end A of the mother plate 4 near the holder 2.

Next, a vinyl chloride board 6 is placed on top of the adhesive, and while heating it with a burner, the vinyl chloride board 6 is attached to the upper end A of the mother board.
Burn it on. On the other hand, after applying adhesive to both side surfaces B and C and the lower end of the mother board 4 in the same manner as described above, two types of insulating tapes were applied thereon.

For example, poly tape and vinyl tape are double bonded.8 Then, after applying adhesive again on the adhesive tape, vinyl chloride is made into a U-shaped cross section as shown in FIG. The sashes 8, 10, and 12 made of aluminum are fitted and joined to the side surfaces B, C, and lower end of the mother plate 4 from three sides of the mother plate 4. Finally, after applying the same adhesive as above to the gaps 14 and 16 that are created in the area where each of the vinyl chloride sashes contact, a small piece of the vinyl chloride plate is applied and heated with a burner to bond the adhesive. Ru.

Thereafter, the mother plate electrode 1 is manufactured by drying for a predetermined period of time.

However, the conventional methods as mentioned above.

(1) Harmful organic solvents were used to adhere the vinyl chloride board, vinyl chloride sash, and insulating tape to the motherboard, and exhaust equipment was required in the work room.

(2) The work of forming the insulating portion of the seed plate is performed redundantly, which is complicated.

(3) The heat resistance of the insulating tape adhered to the metal surface of the base plate is low, and it deteriorates quickly in high-temperature electrolyte solution.

(4) The adhesive force at the boundary between the metal surface of the base plate and the vinyl chloride sash is weak, and it is easily damaged and has a short lifespan as an electrode.

(5) Due to (4) above, it is necessary to remove adhesives, insulating tape, etc. when repairing electrodes, but since organic solvents such as gasoline are used, the work is carried out in the same way as in (1) above. Exhaust equipment was required in the room.

(5) Due to (4) above, the seed plate attached to the mother plate may sink into the boundary between the metal surface of the mother plate and the sash, impeding the peelability of the seed plate and damaging the peripheral shape of the seed plate. was there.

(6) An accident occurred in which a worker suffered burns due to the use of a burner or the like when forming an insulating member around the base plate.

There were various problems such as.

As a result of conducting many research experiments in order to solve the problems of the conventional mother plate electrode and the method of manufacturing such an electrode as described above, the inventors of the present invention discovered that an insulating material was added to the mother plate when manufacturing the mother plate electrode. It has been discovered that all of the above problems can be solved by using a silicone rubber adhesive or a caulking agent as an adhesive for bonding.The present invention is based on such novel findings.

An object of the present invention is to provide an electrode for electrolytic refining of metals and a method for manufacturing the same, which does not require the use of organic solvents or burners, and can therefore significantly improve the working environment. It is.

Another object of the present invention is to have extremely good adhesion between the base plate and the insulating member formed around it, to be able to withstand use in high temperature environments, to have a long lifespan, and to be compatible with various species. A seed plate with good peelability and a good shape can be obtained. It is an object of the present invention to provide an electrode for metal electrolytic refining that is particularly effective as an electrode for producing seed plates, and a method for producing the same.

Another object of the present invention is to provide an electrode for electrolytic refining of metals and a method for manufacturing the same, which can simplify the manufacturing process and dramatically improve productivity.

The above-mentioned aspects of U are achieved by the method of manufacturing an electrode for electrolytic refining of metals according to the present invention. To summarize, the present invention provides an electrode for metal electrolytic refining, characterized in that an insulating member is adhered to a desired outer peripheral portion of the electrode member at a predetermined width via a silicone rubber adhesive or a caulking agent. be. Preferably, the insulating member is made of an impact-resistant material such as vinyl chloride resin, rubber, or FRPCm (male reinforced plastic). Further, such an electrode can be produced by a process of polishing the electrode member, a process of adhering a plate-shaped insulating member to the upper end of the electrode member via a silicone rubber adhesive or a caulking agent, and a process of bonding a plate-shaped insulating member to the upper end of the electrode member, and a step of adhering a plate-shaped insulating member to the upper end of the electrode member. and a step of adhering an insulating member having a U-shaped cross section to the lower end via a silicone rubber adhesive or caulking agent,
and drying the silicone rubber adhesive or caulking agent.

1 Presentation 1 Next, the electrode for metal electrolytic refining and the manufacturing method thereof according to the present invention will be explained in more detail in connection with the manufacturing of a mother plate electrode for manufacturing a seed plate used in copper refining.

Electrodes manufactured in accordance with the present invention have a similar construction as described in connection with FIG. In other words, the electrode 1 has a generally rectangular base plate 4 made of stainless steel.
is attached to the holder 2 and formed. In addition, insulation is provided around the mother plate 4, that is, on both surfaces of the upper end A1, both side surfaces B and C, and the lower end, in order to facilitate peeling when removing the copper plate adhered to the mother plate by electrolysis. Sexual Parts 6.8.1
0.12 is provided. In some cases, the insulating member 12 may not be provided near the lower end.

According to the present invention, both surfaces of the mother plate 4 are first polished, and adhesive is applied thinly to both surfaces of the upper end A of the mother plate 4 near the holder 2. The adhesive is a silicone rubber adhesive or caulking agent that can be used at room temperature, such as the silicone rubber sealant sold by Cemedine Co., Ltd. under the trade name "Cemedine 8060J" or Sony Chemical Co., Ltd. A silicone rubber sealant sold by the company under the product name "Sony Sealant Silicone L6301J" is suitable.Such silicone rubber adhesives or caulking agents, according to research by the present inventors, are suitable for use with +Ti4 chemicals. It has excellent properties (acid resistance and alkali resistance) and heat resistance, and can withstand high temperatures (60 to 6
It was found that there was no deterioration even in an electrolytic solution at a temperature of 5°C. Furthermore, it has been found that such adhesives can be easily removed by scraping or the like when peeled from the base plate for repairs or the like, and cleaning with organic solvents or the like is not required at all.

Next, the insulating member 6 is pressure-bonded onto the adhesive.

Although any material can be used for the insulating member 6, commonly used plastic plates such as vinyl chloride resin plates, and impact-resistant materials such as rubber and FRP are suitable.

Next, after applying the same silicone rubber adhesive or caulking agent as described above to both side surfaces B and C and the lower end of the base plate 4, a cross section as shown in FIG. 5, for example, is applied thereon. Insulating member 8, to, 1 having a U-shape
2 are fitted and joined to the side surfaces B, C and lower end of the mother plate 4 from three sides of the mother plate 4. The insulating members 8, 10
．． Although any material can be used for the material 12, a sash made of a commonly used plastic such as vinyl chloride resin, or an impact-resistant material such as rubber or FRP is suitable.

FIGS. 4 and 5 show one method for applying adhesive to the mother plate and fitting a sash made of vinyl chloride to the mother plate 4. According to one method, the cross section is A dummy motherboard 40 having a similar shape to the plate-like motherboard 4 is inserted into the opening of the vinyl chloride sash 8 (10, 12) in the shape of a square. It is preferable that a stopper 42 is formed on the simulated motherboard 40 to regulate the amount of insertion into the vinyl chloride sash. Next, an adhesive injection pipe 46 is inserted into the vinyl chloride sash from one end of the vinyl chloride sash to the other end. It is inserted into a space 44 formed by the stopper 42 and the stopper 42 . Subsequently, the silicone rubber adhesive or caulking agent is fed into the pipe 46 by a pump 46 connected to the adhesive injection pipe 46. At the same time, by moving, for example, a pump, the adhesive injection pipe 46 is moved from one end of the space 44 of the vinyl chloride sash to the other end in a direction opposite to the previous direction. As a result, an appropriate amount of adhesive is filled into the vinyl chloride sash.

To determine the amount of adhesive filled, pull out the adhesive injection pipe 46! 1 speed, which is adjusted by appropriately controlling the amount of adhesive injected from the pipe 46.

The vinyl chloride sash filled with the adhesive in this manner is removed from the dummy motherboard 40, fitted into the actual motherboard 4, and crimped. When attaching the sash to the motherboard 4 using this method, there is no need to apply adhesive to the motherboard 4 in advance.

Finally, if necessary, each of the vinyl chloride sashes 8
．． The void 14.16 created in the area where 10.12 comes into contact is filled with the same silicone rubber adhesive or caulking agent as described above, and then the adhesive or caulking agent is allowed to solidify by leaving it for a predetermined period of time, for example day or night. .

According to the electrode and manufacturing method thereof according to the present invention as described above, the mother plate electrode 1 can be manufactured in 20 minutes/sheet/man,
It will be understood that the productivity of mother plate electrodes is dramatically improved according to the present invention when compared to 40 minutes per sheet per person in the case of the conventional manufacturing method. As is clear, according to the present invention, there is no need to use organic solvents or burners, and therefore no exhaust equipment is required, and the work environment can be significantly improved. Furthermore, when the present invention is used to produce a seed plate for copper refining, no damage occurs at the boundary between the metal surface of the base plate and the insulating member, and the seed plate can be peeled off from the base plate extremely smoothly. It was possible to obtain a seed plate having an extremely good shape with a uniform outer periphery. Furthermore, the electrode manufactured according to the present invention could be used for more than one month, whereas the lifespan of conventional electrodes was less than one month.

[Brief explanation of the drawing]

FIG. 1 is a process diagram showing a method of manufacturing an electrode for metal electrolytic refining according to the present invention. FIG. 2 is a front view of one embodiment of an electrode according to the invention. FIG. 3 is a process diagram showing a conventional method for manufacturing an electrode for electrolytic refining of metals. FIG. 4 is a front view showing a means for filling the vinyl chloride sash adapted to the base plate with an adhesive or the like. FIG. 5 is a sectional view showing the relationship between the vinyl chloride sash and the simulated motherboard. 4: Mother plate 6.8, 10.12: Insulating member 40: Simulated mother plate 46: Adhesive injection pipe 48: Adhesive injection pump Fig. 1 Fig. 3

Claims (1)

[Claims] 1) An electrode for metal electrolytic refining, characterized in that an insulating member is adhered to a desired outer peripheral portion of the electrode member at a predetermined width via a silicone rubber adhesive or a caulking agent. . 2) The electrode for metal electrolytic refining according to claim 1, wherein the electrode member is a mother plate for producing a seed plate. 3) The base plate has a generally rectangular shape, and the insulating members are formed at the upper end, both side ends, and the lower end.
Electrode for metal electrolytic refining as described in . 4) The insulating member is made of impact-resistant material such as vinyl chloride resin, rubber, FRP, etc. for metal electrolytic refining according to any one of claims 1 to 3. electrode. 5) A step of polishing the electrode member, a step of adhering a plate-shaped insulating member to the upper end of the electrode member using a silicone rubber adhesive or a caulking agent, and applying silicone to both side ends and the lower end of the electrode member. A method for electrolytic refining of metals, comprising the steps of bonding an insulating member having a U-shaped cross section via a rubber adhesive or caulking agent, and drying the silicone rubber adhesive or caulking agent. Electrode manufacturing method. 6) The insulating member having a U-shaped cross section to be adhered to both side ends and the lower end of the electrode member is filled with silicone rubber adhesive or caulking agent in advance. A method for producing an electrode for electrolytic refining of metals according to Item 5. 7) The method for producing an electrode for metal electrolytic refining according to claim 5 or 6, wherein the electrode member is a mother plate for producing a seed plate. 8) The metal electrolytic refining device according to any one of claims 5 to 7, wherein the insulating member is made of impact-resistant material such as vinyl chloride resin, rubber, FRP, etc. Electrode manufacturing method.