JP2003048141A - Device for polishing cathode beam for electrolysis, and cathode manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for polishing a cathode beam for electrolysis which can excellently polish an inclined surface of each corner part, remove a film of oxides and sulfates causing electric resistance thereby, keeping the inclined surface clean, reducing the voltage drop and unifying the current distribution. SOLUTION: Polishing means 30A and 30B for polishing both inclined surfaces 107 of the beam which is held and moved by a guide means 10 are installed below the guide means 10 which holds the beam 104, and moves and guides the beam in the longitudinally axial direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam (conducting rod) for suspending and supporting a cathode (cathode plate) used in electrolytic processes such as electrolytic refining and electrowinning of non-ferrous metals in an electrolytic cell. ), And a cathode manufacturing apparatus for manufacturing a cathode having a beam attached to a seed plate (cathode) with a polished beam attached to a seed plate (cathode).

[0002]

2. Description of the Related Art Conventionally, for example, in an electrolytic process in copper electrolytic refining, a rectangular electrolytic cell is usually provided, and each electrolytic cell has an anode made of crude copper (99% Cu) as shown in FIG. 101 and a cathode 102 serving as a seed plate
Are arranged in parallel with each other.

The bus bar 103 (10
3a, 103b) are arranged in the bus bar 10
3A, the ear portion 101A of the anode 101 and the end portion 104A of the beam 104 that suspends and supports the cathode 102 are arranged. For example, 10 anodes per electrolytic cell
There are 56 sheets of 1 and 57 sheets of cathode 102.

In particular, in order to suspend the cathode 102 from the electrolytic cell, two attachments (ribbons) 105 formed in a loop shape by a thin plate made of the same material as the cathode 102 are attached to the upper end of the cathode 102. Through the beam 104, and current is passed through the contact surface between the loop 105 and the beam 104. Therefore, the loop 105 and the beam 10
It is necessary for the electrical contact portion with 4 to maintain a good electrical contact state.

As shown in FIG. 8, the beam 104 is usually a rod having a quadrangular cross section, that is, a rectangular parallelepiped beam, and pure copper is used as a material for reducing electric resistance. The beam 104 removed from the cathode 102 after the electrolytic operation is finished is repeatedly used.

[0006] The applicant of the present invention filed Japanese Patent Laid-Open No. 2000-345380.
In the publication, as shown in FIG. 8, a beam 104 in which an inclined surface 107 is formed at each corner extending along the longitudinal axis of the beam 104 and which has good electrical contact with the cathode ribbon 105 is disclosed. Proposed.

[0007]

However, as a result of the deposition of the electrolytic solution or the like on the beam 104 during the electrolytic operation, a film of an oxide or a sulfate is formed, and as a result, the electrical resistance on the beam surface increases if left unattended. . Ribbon 10 because of this resistance
A voltage drop occurs at the contact portion between the beam 5 and the beam 104, resulting in an increase in power consumption and non-uniformity of current distribution in the tank.
When the current distribution is non-uniform, local current concentration occurs, and as a result, the electrodeposit becomes a dendritic form and a short circuit occurs, resulting in a decrease in current efficiency.

Therefore, conventionally, the beam 104 once used in the electrolysis step is used again in the electrolysis step after polishing the surface to improve the electric characteristics of the surface before the next use. There is. The beam 104 polishing operation is usually
A method is adopted in which a large number of beams 104 are closely contacted and aligned in a plane, and then the upper surface of each aligned beam 104 is polished.

However, according to the results of the research and experiment conducted by the present inventors, in the above-described method, as shown in FIG. 8, the cross section is rectangular and the inclined surface 107 is formed along the longitudinal axis of the beam. It has been found that it is difficult to satisfactorily polish the inclined surface 107 at each corner of the beam 104.

Therefore, an object of the present invention is to provide a beam having a rectangular cross section in which an inclined surface is formed along the longitudinal axis direction, and the inclined surface at each corner can be polished well.
Provided is a cathode beam polishing apparatus for electrolysis, which can remove oxide or sulfate film that causes electric resistance, keep it in a clean state, reduce voltage drop and make current distribution uniform. Is.

Another object of the present invention is to efficiently polish a beam, which is continuously supplied one by one, and which has a rectangular cross section with an inclined surface formed along the longitudinal axis, during transportation, Accordingly, the contact resistance between the beam and the ribbon for attaching the beam to the cathode is reduced, and the cathode manufacturing apparatus capable of increasing the electrolysis efficiency is provided.

[0012]

The above objects can be achieved by the electrolytic cathode beam polishing apparatus and cathode manufacturing apparatus according to the present invention. In summary, according to an aspect of the present invention, the inclined surfaces of the cathode beam for electrolysis having a rectangular cross section and having inclined surfaces at both adjacent corners extending along the longitudinal axis are provided. A polishing apparatus for polishing, which holds the beam and guides the beam to move and guide in the longitudinal axis direction, and the beam which is arranged above the guide means and is held by the guide means in the longitudinal axis direction. Drive means for driving, and arranged below the guide means,
Polishing means for polishing both inclined surfaces of the beam that is held and moved by the guide means, and is a cathode beam polishing apparatus for electrolysis.

According to one embodiment of the present invention, the inclined surface is a flat surface or a curved surface, and has a quadrangular cross section.

[0014] According to another embodiment of the present invention, the driving means is a chain device having endless circulation motion, and tongue-shaped attachments are attached to the outer periphery of the chain device at predetermined intervals longer than the length of the beam. The beam is driven by contacting the rear end surface of the beam.

According to another embodiment of the present invention, the guide means has a bottom wall for holding and guiding the beam, and a side wall extending above the bottom wall, the side wall of the beam. It is formed to extend to a position slightly higher than the upper surface and further expand upward in a V shape.

According to another embodiment of the present invention, the polishing means polishes the inclined surfaces of the beam by first and second polishing.
A notch is formed on the side wall and the bottom wall of the guide so as to be staggered on both sides, and the first and second polishing means are arranged corresponding to the notch. . According to another embodiment, the polishing means includes a polishing rotary brush and an electric motor that rotationally drives the polishing brush in a predetermined rotation direction at a predetermined rotation speed.

According to another aspect of the present invention, the beam polished by the polishing apparatus is rotated by 90 ° to position both the polished inclined surfaces in a horizontal direction, and then the beam is cathodically. There is provided a cathode manufacturing apparatus, characterized in that the cathode manufacturing apparatus is connected with a ribbon. According to one embodiment, the beam is fed to a cathode platen and the cathode is located on the opposite side of the beam from both polished slopes, after which the polished slopes of the beam are aligned. From the side, the ribbon is mounted in place on the beam and the end of the ribbon is fixed to the cathode.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a cathode beam polishing apparatus for electrolysis and a cathode manufacturing apparatus according to the present invention will be described in more detail with reference to the drawings.

Also in the present invention, similarly to the cathode shown in FIG. 8, the cathode 102 is formed in a loop shape by a thin plate made of the same material as the cathode 102 at the upper end in order to suspend and support the cathode 102 in the electrolytic cell. The formed ribbon (mounting tool) 105 is mounted at, for example, two places. The beam 104 is passed through this loop.

According to the present embodiment, the beam 104 is shown in FIG.
As shown in FIG. 5, a rod-shaped body having a rectangular cross section, for example, a quadrangle, that is, a rectangular parallelepiped beam is used and is usually made of pure copper. In particular, two adjacent corners of the beam 104 are chamfered linearly, that is, in a plane, so that an inclined surface 107 is formed.

Therefore, according to the beam 104 of the present invention,
Ribbon 105 is beam 104
The two inclined surfaces 107 facing each other connected to the upper surface of the are in a surface contact state, and an electrically good contact state can be maintained, and a current flows through the inclined surface 107.

To show one specific dimension and shape of the beam 104, in this embodiment, the length (W) of one side is 3 cm, the length (L) is 120 cm, and the chamfer length (w) of the inclined surface 107 is 5 mm. Can be

In the above description, the inclined surface 10 of the beam 104 is used.
7 is formed in a flat shape by linearly deleting the corners, but the corners of the beam 104 are cut into a curved shape to form curved inclined surfaces at the corners of the beam. May be.

Referring to FIG. 1, the cathode 102 taken out from the electrolytic cell is conveyed from the cathode line L1 to the beam extraction line L2, where the beam extraction roller 201 extracts the beam 104. The extracted beam 104 is transferred to the beam container 202 and conveyed to the beam delivery conveyor 203,
Then, it is sent to the beam sending position P on the beam sending conveyor 203. At this time, the beam 104
Both inclined surfaces 107 are conveyed so as to be located on the lower surface. Since the steps and device configuration up to this point are well known to those skilled in the art, further detailed description will be omitted.

The beam polishing apparatus 1 of the present invention is arranged adjacent to the beam delivery position P.

2 to 5 show an embodiment of the beam polishing apparatus 1 of the present invention. According to the present embodiment, the beam polishing apparatus 1 has a chain device 2 as an endless circulating motion and a guide unit 10 arranged below the chain unit 2.

The chain device 2 is constructed by winding an endless chain 5 between a drive wheel 3 and a driven wheel 4.

Further, the chain device 1 has tongue-shaped attachments 6 attached to the outer periphery thereof at a predetermined interval longer than the length of the beam 104. In this embodiment, the beam 10
Since the length of 4 is 120 cm, attach 6 is 1
They were arranged at a distance of 295.4 cm.

According to this embodiment, the driven wheel 4 located on the side opposite to the drive wheel 3 of the chain device 1 is arranged at a position traversing the feed conveyor 203, as can be seen in FIG. . Therefore, the beam 1 transported to the delivery position P by the delivery conveyor 203
When the chain device 1 circulates, 04 is engaged with the attachment 6 of the chain device 1 whose beam rear end surface circulates endlessly, and is sent out to the inlet 10A (FIG. 2) of the guide means 10 by the chain device 1. .

In this way, the beams 104 sent from the beam delivery position P to the guide inlet 10A of the beam polishing apparatus 1 one by one by the chain device 1 are attached 6 of the chain device 1 whose rear end face moves endlessly in a circulating manner. By being continuously pressed by, the sheet is sent out to the outlet 10B (FIG. 2) of the guide means 10.

Although not limited, the guide means 10 is formed of a stainless steel plate in this embodiment, and the beams 10 are delivered one by one from the beam delivery position P.
It has a bottom wall 11 for holding and guiding 4, and a side wall 12 extending upward from the bottom wall 11. The bottom wall 11 is made slightly larger than the size of one side of the rectangular parallelepiped beam 104 so that the beam 104 can smoothly move along the guide means 10. Further, the side wall 12 extends to a position slightly higher than the upper surface of the beam, and is further formed so as to expand upward in a V shape. In this embodiment, the total length (L) of the guide means is approximately 3.9 m in FIG. 2 and the bottom wall 1 in FIG.
The width (W1) of 1 is 4 cm, and the height (H) of the side wall 12 is 4 c.
m, the spread width (W2) was 6 cm.

Notches 13 are formed on the side wall 12 of the guide means 10 so that they are staggered on both sides. or,
In this portion, as shown in FIG. 5, the bottom wall 11 is also formed with a partial cutout portion 14 at a portion connected to the side wall cutout portion 13.

Polishing means 30 corresponding to the notches 13 and 14
Are placed. In this embodiment, the polishing means 30 comprises first and second polishing means 30A and 30B. The first and second polishing means have the same structure, and each polishing means 30
Both A and 30B are composed of a polishing rotary brush 31 pressed by the beam 104, and an electric motor 32 that rotationally drives the polishing rotary brush 31 in a predetermined rotation direction at a predetermined rotation speed. The polishing rotary brush 31 and the electric motor 32 are
Due to the space, the drive is transmitted by the flexible shaft 33 in the present embodiment, but it is not limited to this.

With the above structure, the beam 104 sent out to the guide outlet 10B by the chain device 2 is
When passing through the position where the polishing rotary brush 31 is arranged, both the inclined surfaces 107 located on the lower surface are polished.

In this embodiment, the beam 10 is used as described above.
Two rotary brushes for polishing 3 on the left and right along the longitudinal direction of 4
Although 1 is arranged, any number can be arranged as desired. As the rotary brush 31 for polishing, any one can be used, but in the present example, good results could be obtained by using the polishing brush 31 having the following specifications.

[Brush bristles Manufacturer: DuPont Product Name: Tynex Material: Nylon (kneaded with abrasive) Thickness: 1-1.2mm ·brush Manufacturer: Takashima Sangyo Co., Ltd. Diameter: 190-230mm Width: 130 mm Rotation speed: 1710 rpm

With the above configuration, the polishing rotary brush 31
Are both inclined surfaces 107 of the beam 104 passing through the polishing position.
To polish.

The beam 104, which has been polished, is sent to the mounting table 21 so as to be transferred to the descending conveyor 20, as shown in FIG. The descending conveyor 20 is composed of a pair of conveyor conveyor chains 22 arranged in the vertical direction, and pedestals 23 are arranged at predetermined intervals on the outer peripheral surface thereof.

The beam 104 on the mounting table 21 is moved by the transfer cylinder device 24 that reciprocates at a predetermined timing.
It is transferred to the descending conveyor 20. At this time, the operating claw 2 attached to the tip of the piston of the transfer cylinder device 24
5 is configured to shallowly engage the upper portion of the beam 104,
Moreover, since the step ΔE (FIG. 6B) exists between the mounting table 21 and the conveyor receiving table 23, the beam 104
Is in the process of moving from the mounting table 21 to the receiving table 23,
In FIG. 6B, the counterclockwise rotational motion is received and the pedestal 23 of the descending conveyor 20 is rotated by 90 degrees, that is, both inclined surfaces 107 of the beam are front right in FIG. 6B. It is placed so that it faces.

As shown in FIG. 6C, the descending conveyor 2
The beam 104, which has been moved to a predetermined lower position at 0, is transported to a cathode plate adjusting machine (not shown) by the beam transport conveyor 40.

Then, as shown in FIG.
Are arranged in a predetermined relationship with the seed plate (cathode) 102 by the cathode plate adjusting machine (FIGS. 7A and 7B). Cathode 1
02 and the beam 104 are conveyed to the ribbon mounting position, and the ribbon 105 from the ribbon feeder (not shown) is mounted (FIG. 7C). Next, the assembly of the cathode 102, the beam 104, and the ribbon 105 is conveyed to a ribbon caulking machine (not shown), and a caulking process is performed (FIG. 7D). The process of transporting the beam 104 to the cathode flattening machine and attaching the beam 104 to the cathode 102 by the ribbon 105 is performed by a device and a procedure well known to those skilled in the art, and thus will not be described in further detail. The description is omitted.

[0042]

As described above, according to the present invention,
The cross section is rectangular, and the electrolysis cathode beam in which inclined surfaces are formed at both adjacent corners extending along the longitudinal axis direction, a polishing device for polishing the both inclined surfaces holds the beam, Guide means for moving and guiding in the longitudinal axis direction,
The driving means is arranged above the guide means and drives the beam held by the guide means in the longitudinal axis direction, and both inclined surfaces of the beam arranged below the guide means and held and moved by the guide means are polished. And (1) in a beam having a rectangular cross section in which an inclined surface is formed along the longitudinal axis direction, the inclined surface at each corner can be polished well. As a result, the oxide or sulfate film that causes electrical resistance is removed and kept in a clean state.
It is possible to reduce the voltage drop and make the current distribution uniform. (2) It is possible to efficiently polish a beam, which is continuously supplied one by one and has a rectangular cross-section with an inclined surface formed along the longitudinal axis direction, during transportation, whereby the beam and the beam are A contact resistance with a ribbon for attaching to the cathode can be reduced, and a cathode capable of increasing electrolysis efficiency can be manufactured. Such an effect can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a cathode manufacturing apparatus configured according to the present invention.

FIG. 2 is a perspective view showing an embodiment of a cathode beam polishing apparatus for electrolysis constructed according to the present invention.

FIG. 3 is a plan view of a beam polishing apparatus constructed according to the present invention.

FIG. 4 is a side view of a beam polishing apparatus constructed in accordance with the present invention.

FIG. 5 is a front view of a beam polishing apparatus constructed in accordance with the present invention.

FIG. 6 is an illustration of a 90 ° turning device for a polished beam.

FIG. 7 is a diagram illustrating a cathode manufacturing process according to the present invention.

FIG. 8 is a diagram showing a state in which a cathode is loaded in an electrolytic cell.

[Explanation of symbols]

1 Cathode Beam Polishing Device for Electrolysis 2 Driving Means (Chain Device) 10 Guide Means 20 Lowering Conveyor 21 Mounting Table 22 Conveyor Chain 23 Receiving Table 24 Transfer Cylinder Device 25 Actuating Claw 30 (30A, 30B) Polishing Means 31 Polishing Rotating brush 32 electric motor 40 beam conveyor 102 electrolysis cathode 104 beam 105 ribbon 107 inclined surface

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazunori Tajiri             3382 No. 3 of Seki, Saga-seki-cho, Kitakaibu-gun, Oita Prefecture             Jichi Nippon Mining & Metals Co., Ltd.Saganoseki Smelter F-term (reference) 3C043 AC04 CC06 CC11

Claims (9)

[Claims] 1. A polishing apparatus for polishing both inclined surfaces of a cathode beam for electrolysis, which has a rectangular cross section and is formed with inclined surfaces at both adjacent corner portions extending along the longitudinal axis direction. A guide means for holding the beam and guiding it in the longitudinal axis direction; a drive means disposed above the guide means for driving the beam held by the guide means in the longitudinal axis direction; Polishing means for polishing both inclined surfaces of the beam, which is arranged below the means and is held by the guide means and moving, and a cathode beam polishing apparatus for electrolysis. 2. The cathode beam polishing apparatus for electrolysis according to claim 1, wherein the inclined surface is a flat surface or a curved surface. 3. The cathode beam polishing apparatus for electrolysis according to claim 1 or 2, wherein the cross section has a quadrangular shape. 4. The drive means is a chain device that performs endless circulation motion, and tongue-shaped attachments are attached to the outer periphery of the chain device at a predetermined interval longer than the length of the beam, and the attachment means contacts the rear end surface of the beam. The cathode beam polishing apparatus for electrolysis according to claim 1, 2 or 3, wherein the beam is driven by coming into contact with each other. 5. The guide means has a bottom wall for holding and guiding the beam, and a side wall extending above the bottom wall, the side wall extending to a position slightly higher than the upper surface of the beam. The cathode beam polishing apparatus for electrolysis according to any one of claims 1 to 4, wherein the cathode beam polishing apparatus for electrolysis is further formed by expanding upward in a V shape. 6. The polishing means comprises first and second polishing means for polishing each inclined surface of the beam, and a side wall and a bottom wall of the guide are notched so as to be staggered on both sides. 6. The cathode beam polishing apparatus for electrolysis according to claim 5, wherein the first and second polishing means are respectively arranged corresponding to the notches. 7. The polishing means includes a rotary brush for polishing,
The electrolysis cathode beam polishing apparatus according to any one of claims 1 to 6, further comprising: an electric motor that drives the polishing brush to rotate in a predetermined rotation direction at a predetermined rotation speed. 8. The beam polished by the polishing apparatus according to claim 1, is rotated by 90 °,
A cathode manufacturing apparatus, characterized in that, after arranging both the polished inclined surfaces in a horizontal direction, the beam is connected to the cathode by a ribbon. 9. The beam is supplied to a cathode flattening machine, the cathode is disposed on the opposite side of the polished inclined surfaces of the beam, and then the polished inclined surface sides of the beam. 9. The cathode manufacturing apparatus according to claim 8, wherein the ribbon is attached to a predetermined position of the beam, and an end portion of the ribbon is fixed to the cathode.