JP2019183254A - Electrolytic slime recovery device and electrolytic slime recovery method - Google Patents

Abstract

To provide a device and a method for efficiently recovering an electrolytic slime generated in electrolytic refining.SOLUTION: An electrolytic slime recovery device recovers electrolytic slimes generated in a cathode, an anode arranged facing a surface of the cathode, and on a surface of the anode in an electrolytic bath for storing the electrolytic solution in which the cathode and the anode are immersed during metal electrolytic refining. The electrolytic slime recovery device comprises a removing tool which removes the electrolytic slime from the surface of the anode, and a scraper unit provided integrally with or adjacent to the removing tool and including a suction part having a suction port of the electrolytic solution containing the electrolytic slime.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an apparatus for efficiently recovering electrolytic slime generated when electrolytically purifying a metal such as copper, and to an electrolytic slime recovery method using an electrolytic slime recovery apparatus.

As a metal purification method, an electrolytic purification method is widely used.
For example, in the electrolytic refining of copper, copper roughly refined to a copper grade of about 99.5% is used as an anode (anode), and a copper base plate or a stainless steel base plate having a copper grade of 99.99% is used as a cathode (cathode). Copper is electrodeposited on the cathode (cathode) side by passing electricity between the two electrodes.

Copper anodes often contain non-target metals such as gold, silver, lead, and bismuth in copper electrolysis. As copper anode electrolysis progresses, non-target metals appear on the anode surface, and individual elution occurs. It elutes into the electrolyte according to the rate, remains in the muddy state on the copper anode surface, or sinks to the bottom of the electrolytic cell and accumulates as a muddy precipitate. The muddy precipitate is called electrolytic slime.
Such an electrolytic slime forms a layer on the anode surface, thereby increasing the electrical resistance of the target metal, leading to an increase in power consumption, reducing the electrolytic efficiency, and the electrolytic slime peeled off from the anode surface to the cathode. There was a problem that the copper purity after electrolysis was reduced due to adhesion, or defects such as irregularities were formed on the cathode surface, resulting in an electrical short and a decrease in productivity.

  In order to solve the above problem, for example, in Patent Document 1, before the anode (anode) slime generated on the surface of the anode peels from the surface of the anode, the anode is lifted from the electrolytic cell, and the anode slime is removed from the surface of the anode. Thereafter, an electrolytic purification method is disclosed in which the anode is inserted again into the electrolytic cell and the electrolytic purification is continued.

Patent Document 2 discloses that the electrolytic solution forms a flow perpendicular to the surface of the anode between the anode and the cathode supported so as to be immersed in the electrolytic solution during electrolytic purification. An electrolytic purification apparatus that performs stirring of an electrolytic solution is disclosed.
In the invention of Patent Document 2, the electrolyte flowing toward the anode between the electrode plates forms a flow perpendicular to the anode surface, thereby suppressing elution of copper ions on the anode surface while suppressing adhesion of slime to the cathode. Can be promoted.

In Patent Document 3, an electrolyte is supplied to each cathode from a supply port below a lower end of a cathode suspended in an electrolytic cell, and overflows from an electrolyte discharge port provided in the upper part of the electrolytic cell. An electrolytic purification method is disclosed in which the electrolytic solution is discharged and the electrolytic solution in the electrolytic cell is circulated.
In the invention of Patent Document 3, it is said that slime can be prevented from adhering to the cathode, and variation in the supply of the additive to each cathode can be eliminated, so that a high-quality metal with few irregularities can be purified.

  In the methods described in Patent Documents 1 to 3, the electrolytic slime generated on the anode surface itself is not excluded from the electrolytic cell, but the generated electrolytic slime is peeled off from the anode surface and deposited on the bottom of the electrolytic cell. After that, it has been carried out to keep the electrolytic solution as far as possible without raising the electrolytic solution.

JP 2005-187833 A JP 2017-048438 A JP 2017-057508 A

However, in the present invention, in view of the above-described conventional circumstances, the electrolytic slime is actively removed from the electrolytic cell without disturbing the electrolytic solution more than necessary even during the electrolytic refining operation. Focusing on the elimination while maintaining the cleanliness of the present invention, the present invention has been achieved.
The present invention provides an apparatus and an electrolytic slime recovery method for efficiently recovering electrolytic slime generated in electrolytic purification.

  According to a first aspect of the present invention, there is provided a cathode, an anode disposed opposite to the cathode surface, and an anode surface in an electrolytic cell storing an electrolyte in which the cathode and the anode are immersed during electrolytic refining of metal. A device for collecting the electrolytic slime generated in the anode, the removing device for removing the electrolytic slime on the anode surface from the anode surface, and the electrolytic device including the electrolytic slime provided integrally with or adjacent to the removing device. An electrolytic slime recovery apparatus comprising a scraper portion including a suction portion having a liquid suction port.

  According to a second aspect of the present invention, there is provided a partition wall in which the scraper portion according to the first aspect is disposed at a position close to and substantially parallel to the surface of the cathode facing the anode on which the removal tool is disposed. It is an electrolysis slime recovery device characterized by having.

  According to a third aspect of the present invention, the electrolytic slime is separated from the electrolytic solution containing the electrolytic slime sucked by the suction portion in the first invention to produce an electrolytic solution after filtration, and the separated electrolytic slime is An electrolytic slime recovery device comprising: an electrolytic slime recovery unit to be recovered; and a supply unit that circulates and supplies the filtered electrolyte solution to the electrolytic cell.

  A fourth aspect of the present invention is a liquid purification filter in which the electrolytic slime recovery section in the third aspect filters the electrolytic slime from the electrolytic solution containing electrolytic slime and separates it into the recovered electrolytic slime and the filtered electrolytic solution It is an electrolysis slime recovery device characterized by having.

  According to a fifth aspect of the present invention, the supply unit according to the third and fourth aspects is disposed at a position close to and substantially parallel to the surface of the cathode at a position facing the anode where the removal tool is disposed. An electrolytic slime recovery device having a supply port for discharging the electrolytic solution after filtration between a partition wall and a cathode.

  According to a sixth aspect of the present invention, there is provided the electrolytic slime recovery apparatus, wherein the arrangement of the removal tool in the first to fifth aspects has an inverted V-shaped structure.

  According to a seventh aspect of the present invention, when the electrolytic slime recovery device according to the first to sixth aspects of the present invention is disposed at a location where the recovery device is installed in the electrolytic cell from a state suspended above the electrolytic cell, From the time when the suction part of the recovery device is immersed in the electrolytic solution stored in the electrolytic cell, the electrolytic slime removal treatment on the anode surface, the suction of the electrolytic solution containing electrolytic slime near the anode surface, and the vicinity of the cathode surface The electrolytic slime recovery method is characterized in that the supply of the electrolytic solution is started.

  According to an eighth aspect of the present invention, there is provided an electrolytic slime recovery device according to the first to sixth inventions of at least an even number group, the electrolytic slime recovery device is numbered, and two groups of the electrolytic slime recovery device are paired, and the anode Removal of electrolytic slime by means of the removal tool of the electrolytic slime recovery device is arranged so that one unit is installed on each side, and the removal tool and suction port of the electrolytic slime recovery device are immersed in the electrolytic solution. Electrolytic slime generated on the anode surface by alternately operating odd-numbered and even-numbered electrolytic slime recovery devices for treatment, suction of electrolytic solution containing electrolytic slime near the anode surface, and supply of electrolytic solution near the cathode surface An electrolytic slime recovery method characterized by recovering an electrolytic solution containing

  The ninth invention of the present invention is an electrolytic slime recovery method characterized in that the electrolytic slime generated on the anode surface is recovered using the electrolytic slime recovery device in the seventh and eighth inventions during the operation of electrolytic purification. is there.

  According to a tenth aspect of the present invention, there is provided the remover from a state in which the remover installed in the electrolytic slime recovery device according to the seventh to ninth aspects is suspended from the upper part of the electrolytic cell and the remover part downward. Is moved to the bottom of the electrolytic cell, and after the removal tool is completely submerged in the electrolytic solution stored in the electrolytic cell, an alternate operation of the electrolytic slime recovery device is started.

  According to the electrolytic slime recovery method using the electrolytic slime recovery apparatus of the present invention, the electrolytic slime remaining on the anode surface can be efficiently recovered, and the efficiency of electrolytic purification is significantly improved while maintaining the cleanliness of the cathode surface. It becomes possible to do.

It is a side view explaining the structure of an electrolytic vessel. It is a schematic block diagram of the collection device of the electrolytic slime concerning the present invention. (A) It is a block diagram which shows one Example of the removal part which concerns on this invention, (b) It is a block diagram which shows the other Example of this invention, (c) It is a block diagram which shows the other Example of this invention. is there. It is a schematic block diagram which shows the other example of the suction part which concerns on this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the scraper part which concerns on this invention, (a) is an example of a separate type | mold scraper part with a brush-type removal tool, (b) is an example of an integrated type scraper part with a brush-type removal tool. (C) is a figure which shows an example of the separate type | mold scraper part which has a scouring-type removal tool, (d) is a figure which shows an example of an integrated type scraper part which has a spatula-type removal tool. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the supply part which concerns on this invention, (a) is a figure which shows the state immediately after being immersed in the electrolyte solution of the supply part from the side, (b) is a figure from upper direction, (c) is collection | recovery. It is a figure which shows the state of the supply part in work. It is explanatory drawing of the electrolytic slime collection | recovery method based on this invention, (a) is a figure which shows the state immediately after electrolyte solution immersion of a collection | recovery apparatus, (b) is a figure during electrolytic slime collection | recovery. (C) is a figure which shows an example of the driving | operation mechanism by which a collection | recovery apparatus is alternately operated up and down.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side sectional view for explaining the configuration of an electrolytic cell in which the electrolytic slime recovery apparatus of the present invention is used.
An electrolytic solution 2 is stored in the electrolytic cell 1, and anodes 3 and cathodes 4 are alternately immersed in the electrolytic solution 2 at regular intervals.
Usually, as the anode 3 to be used, a raw material metal of a metal to be purified is used. For example, in the case of copper purification, crude copper having a copper grade of about 99.5% is used.
On the other hand, as the cathode 4, a pure copper plate or a stainless steel plate is used.
As the electrolytic solution 2, an acidic copper sulfate aqueous solution is used.

  While electrolytic refining is being performed, a fluid mass, mainly roasting impurities contained in the anode, called electrolytic slime, is generated on the anode surface, and if it diffuses into the electrolyte, it will contaminate the electrolyte. As a result, the quality of the cathode, which is a product of electrolytic purification, is lowered, and at the same time, the electrolytic efficiency is lowered. Thus, conventionally, after the generation of the electrolytic slime, measures have been taken to maintain the stationary state in the electrolytic solution, but in the present invention, such electrolytic slime is positively removed from the anode surface. What has been found and completed is the electrolytic slime recovery device according to the present invention.

FIG. 2 is a diagram for explaining the configuration of an electrolytic slime recovery apparatus according to the present invention, in which 100 is an electrolytic slime recovery apparatus according to the present invention, A is an electrolytic slime removal unit, B is an electrolytic slime recovery unit, C is a supply unit, S is a scraper part, 5 is an electrolytic slime removal tool, 6 is a suction port, 7 is a suction part, 8 is a liquid filter, 8a is a filtration pot, 9 is a transport pipe, 10 is a supply port, b is an on-off valve, h partition wall, _{P 1} is a liquid feed pump.

An electrolytic slime recovery apparatus 100 shown in FIG. 2 includes a removal tool 5 (for example, a brush in the figure) that scrapes the electrolytic slime, a suction port 6 that sucks the electrolytic slime scraped by the removal tool together with the electrolytic solution, and electrolysis. Electrolytic slime removing part A composed of a scraper part S having a partition wall h having a partition wall h that suppresses the influence on the cathode surface during slime suction and ancillary equipment such as a transport pipe, and an electrolytic solution containing the sucked electrolytic slime The electrolytic slime is separated to produce an electrolytic solution after filtration and the separated electrolytic slime is collected, and the supply unit that circulates and supplies the filtered electrolytic solution to the electrolytic cell as an electrolytic solution with a liquid feed pump It is roughly divided into C.
Hereinafter, each part is demonstrated in order. In FIG. 2, the black arrow indicates the electrolytic solution containing electrolytic slime, and the broken line arrow indicates the flow of the electrolytic solution after filtration.

[Electrolytic slime removal section]
The scraper part S, which is the main part in the electrolytic slime removing part A, is disposed so as to contact the anode surface, and is removed like a brush for scraping the electrolytic slime generated on the anode surface during electrolytic purification from the anode surface. A suction part 7 having a suction port 6 for sucking together with the electrolyte 5 the electrolytic slime scraped by the removal tool 5 above the removal tool 5 is integrally or connected to the removal tool 5. Is provided. The removal tool 5 and the suction part 7 are integrated, and the removal tool 5 moves while maintaining contact with the anode surface, so that the removal tool 5 scrapes off the electrolytic slime on the anode surface and lifts it from the anode surface. The floated electrolytic slime is sucked from the suction port 6 and removed from the anode surface.
Further, the partition wall h that is scraped off from the anode surface and serves to prevent the electrolytic slime floating in the electrolytic solution from adhering to the cathode surface and contaminating the surface of the anode 3 on which the scraping operation is performed. And a position close to and substantially parallel to the surface of the cathode 4 at a position facing the surface of the anode 3.

The form can employ | adopt a structure as shown to Fig.3 (a)-(c).
FIG. 3A shows a unit composed of a removal unit 5 having a length shorter than the width of the anode (for example, about 1/10 to 1/5) and a suction unit 7 including a suction port 6 disposed above the removal tool 5. It is in the form of being equipped alone. Note that a plurality of the units may be used and arranged so as to fill the anode width. In addition, the black arrow in a figure has shown the operation | movement locus | trajectory of the scraper part.
FIG. 3B shows a configuration in which a removal tool 5 having substantially the same length as the anode width is provided, and a unit including a suction portion 7 having a suction port 6 disposed thereon is provided. In addition, the white arrow in a figure has shown the operation | movement locus | trajectory of the scraper part.
FIG. 3C shows a form in which a unit including a suction part having a single or a plurality of inverted V-shaped removal tools 5 and having a suction port 6 above is provided. In addition, the white arrow in a figure has shown the operation | movement locus | trajectory of the scraper part.
FIGS. 3A to 3C are diagrams showing the arrangement of each component when the direction from the anode to the cathode is visually recognized.

The suction part has a trumpet-shaped housing with an opening (suction port) spreading toward the removal tool, and the electrolyte containing the sucked electrolytic slime is conveyed to the recovery unit at a position facing the normal suction port. comprising a transport pipe 9, the transport pipe 9 is connected to the liquid feed pump P ₁ (see FIG. 2).
Moreover, as seen in FIG. 4, vertically it may be configured to include at least two Sukureiba portion S _1, S _2.
When a suction part is provided with a plurality of scraper parts S ₁ and S ₂ , an electrolysis slime scraping operation can be performed by providing on-off valves b ₁ and b ₂ in transport pipes 9 and 9 from each scraper part to the suction part. the suction working independently for each Sukureiba unit enables control, for example, when immersed in the electrolyte, the on-off valve b ₂ and an open position, the opening and closing valve b ₁ as the closed position by immersion timing to the electrolyte, first operate the Sukureiba section S _2, while recovery operations electrolysis slime, moves to the electrolytic cell bottom direction.
Further, in synchronization with the immersion in the electrolytic solution Sukureiba section S _1, the opening and closing valve b ₁ is in an open position, recovery operations electrolytic slime by Sukureiba portion S ₁ is being started. In a state where the Sukureiba portion S ₁ is the operation, close the shutoff valve b _2, even interrupt the operation of Sukureiba section S _2, it may be intact continuation state, the electrolyte status and electrolytic slime occurrence And the cathode surface condition.

  The shape of the removal tool 5 is assumed to be a brush shape in which one end of a hair tip is constrained, such as a general deck brush, a car wash brush, and a hairstyling brush. It is important that the electrolytic slime can be scraped off without damaging the anode surface. Furthermore, the brush handle is hollow, and the electrolytic slime can be absorbed into the handle portion of the brush tip base. In a brush provided with a certain amount of holes, it is possible to provide a suction port together. Further, it is possible to use a removal tool of a T-shaped shape such as a glass wiper, the T-shaped portion at the tip of which is made of resin, and scraping the electrolytic slime at that portion.

FIG. 5 shows an example of the scraper unit including the removal tool.
The scraper portion Sa in FIG. 5A constitutes a separate scraper portion in which the brush-type removal tool 5a, the suction port 6 and the suction portion 7 are adjacent to each other. FIG. 5B is an example of a car wash brush-type scraper portion Sb having a hollow handle, in which the brush-type removal tool 5a, the suction port 6, and the suction portion 7 are integrated. FIG. 5 (c) shows a separate-type scraper portion Sc provided with a scouring-type removing tool 5b. FIG. 5 (d) shows a scraper portion Sd having a shape like a T-shaped glass wiper. The removing tool includes a resin spatula 5c in the T-shaped portion, and the T-shaped member is a suction portion 7, and the suction portion. 6 is an integrated scraper portion Sd provided with a suction port 6.
In addition, the white arrow in FIG. 5 has shown the direction through which the electrolyte solution containing the attracted electrolytic slime flows.

  As the material of the removal tool 5, various materials can be used without distinction between metal and base metal as long as the material does not deeply damage the anode surface and is not attacked by the electrolyte solution. As a material that does not damage the anode surface, an organic polymer material such as polypropylene (PP) or vinyl chloride (PVC) can be suitably used.

[Electrolytic slime recovery section]
In this electrolytic slime recovery part B, the electrolytic solution containing the sucked electrolytic slime is separated into an electrolytic slime (including some electrolytic solution) and an electrolytic solution with less dirt as a filtered electrolytic solution, and the electrolytic slime is recovered. And it plays the role which sends the electrolyte solution after filtration to a supply part.

  The specific configuration shown in FIG. 2 is that the electrolytic slime is filtered from the electrolytic solution containing the electrolytic slime and separated into the recovered electrolytic slime and the filtered electrolytic solution, and the filtered electrolytic solution is temporarily used. It consists of the filtration pot 8a which stores automatically. The electrolytic slime separated by the liquid purification filter 8 is stored in the liquid purification filter 8 to some extent, and is subjected to disposal processing such as replacement of the liquid purification filter and removal of the electrolytic slime from the inside of the electrolytic cell. To be discharged.

[Supply section]
As shown in FIG. 2 or FIG. 6, the supply part C is a position facing the anode 3 via the scraper part S, a position close to the surface of the cathode 4 adjacent to the anode 3, and a substantially parallel position. Between the partition wall h and the cathode 4, which are disposed in the same, a supply port 10 for discharging the electrolytic solution after filtration is provided. Further, the supply port 10 is connected to the filtration after the electrolysis solution side of the solution purification filter 8 through transport pipe 9, the electrolytic solution filtered by the liquid feed pump P ₁ is the cathode surface of the anode near doing removal of electrolysis slime The liquid is fed toward the electrolytic cell from the supply port 10. When the partition wall h is not used, the post-filter electrolyte supply port 10 can gently release the post-filter electrolyte near the surface of the upper part of the cathode, that is, has a laminar flow property with respect to the cathode surface. It is discharged at a position where it can be discharged so as to have a flow and conditions.

  In FIG. 6, the form of the supply part C in an electrolytic cell is shown. (A) is a schematic side view showing a state immediately after being immersed in the electrolyte solution of the supply unit from the side, (b) is a schematic top view showing the state of the upper surface of the electrolytic cell from above, and (c) is a recovery. It is a side surface schematic diagram which shows the state of the supply part in operation | work, and has shown the case where the scraper part S exists in the front-end | tip part of the electrolytic cell bottom direction of an anode. FIG. 6 shows and describes one unit of electrolytic purification in the electrolytic cell, and a plurality of states shown in FIG. 6 are set in the electrolytic cell.

Usually, the electrolytic slime recovery apparatus is installed on the surface of the two scraper portions S _n (odd number group) and S _{n + 1} (even number group) via the anode 3 that performs electrolytic slime removal treatment. Further, partition walls h and h are provided between the anode 3 and the adjacent cathodes 4 and 4 in order to avoid an adverse effect due to the electrolytic solution soiled with the scraped electrolytic slime. Between the partition wall h and the cathode 4, a post-filtered electrolyte solution supply port 10 is disposed in order to suppress the influence of the electrolyte solution contamination as much as possible. In order to prevent electrolytic slime from leaning toward the cathode surface due to the discharge of the electrolytic solution, the supply port 10 is not disposed at least below the central position in the electrolytic cell bottom direction of the cathode so that the recovery unit B And are controlled separately in synchronization. Broken line arrows in the figure indicate a part of the flow of the electrolyte solution to be discharged. Moreover, the solid line arrow has shown the flow direction of the electrolyte solution containing the attracted electrolytic slime.
In addition, the form of the pump for liquid feeding provided in each part is not restrained by the structure shown to a figure, and can employ | adopt a desirable structure suitably. Also, the white arrow in the figure indicates the vertical movement operation of the electrolytic slime removal unit, and the horizontal movement is in the direction perpendicular to the page.

Next, an electrolytic slime recovery method using the electrolytic slime recovery apparatus of the present invention will be described.
FIG. 7 is an explanatory view of an electrolytic slime recovery method according to the present invention. FIG. 7 (a) is a diagram showing a state immediately after immersion of the electrolytic solution in the recovery device, and FIG. 7 (b) is a diagram during recovery of electrolytic slime. (C) is a figure which shows an example of the driving | operation mechanism by which a collection | recovery apparatus is alternately operated up and down.
When the electrolytic slime recovery device according to the present invention is placed from the state suspended above the electrolytic cell at the recovery device installation position in the electrolytic cell, first, as shown in FIG. After being immersed in the electrolytic solution 2 stored in the tank, the partition wall h is preceded by another part and arranged in the direction of the bottom of the electrolytic tank, so that the other part is immersed, the electrolytic slime is recovered, or the partition wall is disposed. (Normally set at the bottom of the electrolyzer from the top of the electrolyzer bottom side of the anode) After placing in front of the other parts, sequentially from the immersed part of the other parts of the recovery device, The suction of the electrolytic solution containing the electrolytic slime in the vicinity of the anode surface and the supply of the electrolytic solution to the vicinity of the cathode surface are started.

  In that case, at least two numbered electrolytic slime recovery devices are used, and two of the electrolytic slime recovery devices are paired and arranged above the electrolytic cell so that each one is installed on both sides of the anode. The scraper part S is completely immersed in the electrolytic solution while the removal of the slime, the suction of the electrolytic solution containing the electrolytic slime, and the supply of the electrolytic solution after filtration are synchronized with the immersion in the electrolytic solution (FIG. 7B). reference). In order to maintain and improve the purity of the cathode, the supply of the electrolytic solution is not limited to the supply of only the electrolytic solution after filtration. , Unused electrolytic solution, etc.) may be supplied.

Next, using an operating mechanism using the crankshaft 21 as shown in FIG. 7C, the odd-numbered and even-numbered electrolytic slime recovery devices are alternately operated, and the scraper part S and the supply part C are shown in FIG. Removal of the electrolytic slime generated on the anode surface and suction of the electrolytic solution containing the electrolytic slime by the operation along the form of the removal tool 5 of the scraper part S, that is, the vertical movement or lateral movement, or a combination thereof. Carry out the collection work. Usually, the recovery operation of the electrolytic slime is performed by a pattern in which the operation toward the bottom of the electrolytic cell (up and down movement) and the operation in the horizontal direction (lateral movement) are combined. M represents a motor, and 20 represents a bearing.
In the present invention, the operation of the recovery device can recover the electrolytic slime generated on the anode surface even during the operation of electrolytic purification.
When the removal of the electrolytic slime is completed, the operation is stopped, and the recovery device is pulled up from the electrolytic solution to the upper side of the electrolytic cell, and the process is terminated.

Note that the electrolytic slime recovery device according to the present invention may prepare a number that can be installed in the total number of anodes of the electrolytic cells to be used, and may collect the total number of electrolytic slimes on the anode surface at a time. A method of collecting electrolytic slime from all anodes belonging to the compartment may be adopted.
In the electrolytic slime recovery device according to the present invention, when the electrolytic slime increases during electrolysis, the voltage between the anode and the cathode rises. Therefore, a threshold is set for the voltage, and the above-mentioned electrolytic slime is applied to the electrolytic cell exceeding the threshold. By performing the recovery method, it becomes possible to maintain a highly efficient operation.

DESCRIPTION OF SYMBOLS 1 Electrolysis tank 2 Electrolyte 2 'Electrolyte liquid level 3 Anode 4 Cathode 5 Remover 5a Brush type remover 5b Brush type remover 5c Spatula type remover 6 Suction port 7 Suction part 8 Clean solution filter 8a Filter pot 9 Transport Pipe 10 Supply port 100 Electrolytic slime recovery apparatus 20 according to the present invention Bearing 21 Crankshaft A Electrolytic slime removal part B Electrolytic slime recovery part C Supply part M Motor P ₁ Liquid feed pump S, S ₁ , S ₂ , _Sn , S _{n + 1} Scraper part Sa, Sc Separate type scraper part Sb, Sd Integrated type scraper part b On-off valve h Bulkhead

Claims (10)

A device for recovering electrolytic slime generated on the anode surface in an electrolytic cell storing an anode disposed opposite to the cathode and the cathode surface, and an electrolytic solution in which the cathode and anode are immersed, during electrolytic refining of metal There,
A removal tool for removing the electrolytic slime on the anode surface from the anode surface;
A scraper portion including a suction portion provided integrally or adjacent to the removal tool and having a suction port for an electrolyte solution containing the electrolytic slime,
An electrolytic slime recovery device comprising:   2. The electrolysis according to claim 1, wherein the scraper portion has a partition wall disposed at a position close to and substantially parallel to the surface of the cathode facing the anode on which the removal tool is disposed. Slime recovery device. An electrolytic slime recovery unit that separates the electrolytic slime from the electrolytic solution containing the electrolytic slime sucked by the suction unit, generates an electrolytic solution after filtration, and recovers the separated electrolytic slime;
The electrolytic slime recovery apparatus according to claim 1, further comprising a supply unit that circulates and supplies the electrolytic solution after filtration to the electrolytic cell.   The said electrolytic slime collection | recovery part has a liquid filter which filters the said electrolytic slime from the electrolyte solution containing electrolytic slime, and isolate | separates it into the collect | recovered electrolytic slime and the electrolyte solution after filtration, The said Claim 3 characterized by the above-mentioned. Electrolytic slime recovery device.   Supply in which the supply unit releases the post-filtration electrolyte solution between a partition wall and a cathode disposed close to the surface of the cathode at a position facing the anode on which the removal tool is disposed and a position substantially parallel to the cathode The electrolytic slime recovery device according to claim 3 or 4, further comprising a mouth.   The electrolytic slime recovery apparatus according to any one of claims 1 to 5, wherein an arrangement of the removal tool is an inverted V-shaped structure.   The electrolytic slime recovery device according to any one of claims 1 to 6 is stored in the electrolytic cell when the electrolytic slime recovery device is disposed at an installation location of the recovery device in the electrolytic cell from a state suspended from the electrolytic cell. In order from the time when the suction part of the recovery device is immersed in the electrolyte solution, the removal treatment of the electrolyte slime on the anode surface, the suction of the electrolyte solution containing the electrolyte slime near the anode surface, and the electrolyte solution near the cathode surface An electrolytic slime recovery method characterized by starting supply. Using the electrolytic slime recovery device according to any one of claims 1 to 6 of at least an even number group,
Numbering the electrolytic slime recovery device,
Two sets of the electrolytic slime recovery device are paired, and arranged so that each one is installed on both sides of the anode,
While immersing the removal tool and suction port of the electrolytic slime recovery device in the electrolytic solution,
Electrolytic slime removal treatment by the removal tool of the electrolytic slime recovery device, suction of an electrolytic solution containing electrolytic slime in the vicinity of the anode surface, and supply of the electrolytic solution to the vicinity of the cathode surface are performed at odd-numbered and even-numbered electrolytic slime. An electrolytic slime recovery method comprising recovering an electrolytic solution containing electrolytic slime generated on the anode surface by alternately operating a recovery device. The electrolytic slime recovery method according to claim 7 or 8, wherein the electrolytic slime generated on the anode surface is recovered using the electrolytic slime recovery device during the operation of electrolytic purification.
  From the state where the removal tool installed in the electrolytic slime recovery device is hung on the top of the electrolytic cell and the removal tool part is directed downward, the removal tool is moved toward the bottom of the electrolytic cell, and the removal tool is moved to the electrolytic cell. 10. The electrolytic slime recovery method according to any one of claims 7 to 9, wherein the alternating operation of the electrolytic slime recovery device is started after being completely immersed in the stored electrolytic solution.

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