JP2023132817A - Anode correction device and thickness adjustment member used therefor - Google Patents

Abstract

To provide a technique by which even one worker can correct the ear part of an anode safely, easily, and quickly without an installation large-sized or complicated.SOLUTION: An anode correction device of the present invention is used for electrolytic refining, comprising: a reference block 12 in contact with the backside surface of an ear part C of an anode A; and a pressurizing block 13 provided to be accessible to and separable from the reference block 12. The reference block 12 comprises: a block body 21 including a contact surface facing the pressurizing block 13 and fixed to a device frame 1F located on the opposite side to the contact surface with a bolt 14; and a thickness adjustment member 22 inserted attachably/detachably between the block body 21 and the device frame 1F. A notch 22N is formed from the lower end part of the thickness adjustment member 22 in the height direction. The thickness adjustment member is fixed by passing the bolt 14 used for fixing the block body 21 through the notch 22N.SELECTED DRAWING: Figure 1

Description

The present invention relates to an anode correction device for correcting a distorted anode, and a thickness adjustment member used in the device.

Electrolytic smelting is a method for producing high-purity metals. In electrolytic smelting, an anode (an electrode made of a target metal of low purity or an electrode that does not dissolve in the electrolyte) and a cathode are alternately immersed in an electrolytic tank filled with an electrolyte and energized to remove the seed plate of the cathode. Products are manufactured by electrodepositing high-purity metals onto the surface. Since the energization process (electrolysis process) of such electrolytic smelting consumes a large amount of power, it is required to reduce the power consumption in order to improve the production efficiency of electrolytic smelting.

In order to reduce power consumption in electrolytic smelting, the anode and cathode are arranged such that the distance between them is suitable for electrodeposition. However, if the distance between the anode and cathode changes from an appropriate distance, power consumption will change under the influence of the change in distance.

For example, if the distance between the anode and the cathode becomes too large, the electrical resistance of the electrolytic solution increases and a large amount of power is required for electrodeposition. On the other hand, if the distance between the anode and the cathode becomes too small, although power consumption can be reduced, as electrodeposition progresses on the seed plate of the cathode, part of the electrodeposited metal may come into contact with the anode. When such a contact occurs, current flows directly from the anode to the cathode, resulting in wasted power. Therefore, in order to reduce power consumption and prevent wasted power, it is necessary to maintain an appropriate distance between the anode and the cathode in the electrolytic cell.

Both the anode and the cathode are held by a bus bar and an insulating plate, which are electrodes provided at the top of the electrolytic cell, and are suspended in the electrolytic cell. Therefore, the verticality of both electrodes influences the distance between the anode and cathode in the electrolytic cell. In other words, it is important to reduce the strain on both electrodes because the strain in the vertical direction has an effect.

By the way, the anode is manufactured by casting so as to have a shape as shown in FIG. That is, the anode A is integrally cast with a main body B and a pair of ears C provided on both sides of the upper part of the main body B. The pair of ears C and C of the anode A serve as supporting parts for suspending the anode A when the anode A is immersed in the electrolytic bath, and also function as a contact point with the bus bar. Therefore, in order to keep the anode A suspended in a stable state while maintaining good contact with the bus bar, the lower portions of the pair of ears C, C are cut so as to be flat.

However, in the mold used for casting the anode A, the inner bottom surface of the mold is slightly sloped or stepped in order to facilitate peeling off the anode. Therefore, the position of the pair of ears C, C of the anode A is slightly shifted from the back side (the side that was in contact with the bottom of the mold) to the front side (the hot water surface side in the mold) in the thickness direction of the anode A. Formed in an uneven position.

Specifically, as shown in FIG. 6, the pair of ears C and C of the anode A are shifted toward the surface side from the center lines X and X' passing through the center of gravity G of the main body B of the anode A (FIG. (A)). Therefore, even if the lower parts of the pair of ears C and C are cut flat, when the anode A is inserted into the electrolytic cell, the anode A will swing about the point P, and the ears will come into contact with the bus bar. The posture is changed so that the plane including the points P, P and the center of gravity G faces vertically (FIG. 6(B)). In other words, the anode A changes its posture so that its surface is inclined with respect to the vertical direction. In this case, when the anode A is immersed in the electrolytic bath, the lower end of the main body B of the anode A has a shorter distance to the cathode on the surface side (the left side in FIG. 6) than the upper end. The back side (the right side in FIG. 6) is longer. In other words, even if the upper part of the electrolytic cell is installed so that the distance to the cathode is appropriate and the cathode is immersed in the electrolytic cell, the anode A and the cathode at the lower part of the main body B (i.e., the main body B in the electrolytic cell) are The distance between the two will shift. Then, the contact between the anode A and the cathode as described above may occur, and the production efficiency of electrolytic smelting may decrease.

Therefore, in order to correct the misalignment of the pair of ears C and C of the anode A, that is, the misalignment with respect to the center lines X and X' passing through the center of gravity G of the main body B of the anode A, it is possible to press the anode A. (For example, Patent Documents 1 and 2).

Specifically, the pair of ears C and C are pressed and bent toward the back side by press working, and the point P where the ears contact the bus bar is a center line X passing through the center of gravity G of the main body part B of the anode A. Correct it so that it overlaps with X'. By correcting in this way, when the anode A is inserted into the electrolytic cell, the plane including the points P, P where the pair of ears C and C come into contact with the bus bar and the center of gravity G can be oriented close to the vertical direction. Thereby, when the anode A is immersed in the electrolytic bath, it is possible to effectively prevent the anode A from tilting.

Japanese Patent Application Publication No. 2017-122254 Japanese Patent Application Publication No. 2012-41612

Now, as described above, when pressing the pair of ears C, C of the anode A and adjusting the positions of the ears C, C appropriately, if the thickness of the pair of ears C, C changes, The amount by which the ears C, C are pressed must be changed. Therefore, it is necessary to adjust the amount of deformation of the ears C, C during press working in accordance with the thickness of the anode A (that is, the thickness of the pair of ears C, C).

Conventionally, the amount of deformation of the pair of ears C, C has been adjusted by changing the thickness of the receiving mold located on the back side. However, in order to change the thickness of the receiving mold, it is necessary to remove and attach the receiving mold each time. Changing the receiving mold requires about 25 to 30 minutes of work time, and the equipment must be stopped while changing the receiving mold. On days when the equipment is in operation, if the equipment is stopped for only 25 to 30 minutes, it will have a significant impact on other processes, so changes to the receiving mold are carried out on days when the equipment is not in operation. However, the thickness of the anode A, including the pair of ears C and C, varies by about 5 mm or less depending on the day the anode A is manufactured, so it seems that the receiver mold was changed only on days when the equipment was not in operation. , it is difficult to appropriately adjust the amount of deformation of the ears C, C.

For example, Patent Document 1 discloses an apparatus for straightening an anode A used in electrolytic smelting. Specifically, the anode correction device includes a reference block that comes into contact with the back surface of the ear portion C of the anode A, and a pressure block that is provided so as to be able to move toward and away from the reference block. The reference block includes a block body having a contact surface facing the pressure block, and a thickness adjustment member removably provided on the block body, and the thickness adjustment member is attached to the contact surface of the block body. A contact member is provided, a fixing portion that fixes the contact member to the block body, and a thickness adjustment member that is detachably attached to the block body. Such an anode correction device is excellent in that it can easily and quickly correct the ears of the anode without increasing the size and complexity of the equipment.

However, in the anode correction device disclosed in Patent Document 1, the thickness adjustment member has a complicated shape including a contact member, an insertion member, and a connection member, and is removably attached to the block body. However, the fixing method is complicated as described below. That is, Patent Document 1 describes the thickness adjustment member as follows: ``The thickness adjustment member may be fixed to the block body 11 with a bolt or the like. and a fixing plate placed on the top or side surface of the block body 11 as a fixing part is provided.The fixing plate is provided with a through hole through which a bolt or the like can be inserted (paragraph [0047]), Furthermore, it is disclosed that "thickness adjustment member 12 can be fixed to block body 11 by inserting a bolt or the like into the through hole of contact member 12a and inserting the bolt or the like into the hole of block body 11." (paragraph [0048]). Then, when such a thickness adjustment member is fixed, in order to remove it, at least the bolt must be pulled out from the through hole of the contact member, and the work of loosening the bolt and adjusting the thickness after removal is required. The problem is that the work of holding the members must be done at the same time, and it is difficult for a worker to do it alone from a safety standpoint.

Further, Patent Document 2 discloses a technique for an anode verticality correction method that automates the verticality correction of the anode and makes it possible to shorten the time required for verticality correction. Specifically, we will use a verticality measuring device that measures data regarding the verticality of the anode, and the angle of the back surface of the ear that is suspended and supported in the electrolytic cell by pressing the ear receiver on which the anode ear is placed. Discloses a technique for adjusting the angle of the ear receiver part to an angle that corrects the verticality based on measurement data by the verticality measuring device using a verticality measuring device equipped with an ear vertical press machine for correcting the verticality. has been done.

However, there is a problem in that devices such as a verticality measuring device, a control section, and a drive mechanism are required, which increases the scale of the device and increases the cost.

The present invention has been proposed in view of the above circumstances, and allows a single worker to safely, simply and quickly correct the ear portion of an anode without increasing the size or complexity of the equipment. The aim is to provide technology that makes it possible.

As a result of extensive studies, the inventor of the present invention found that, in an anode correction device that performs pressure correction by sandwiching between a reference block and a pressure block, a predetermined notch is used as a thickness adjustment member to adjust the thickness of the reference block. The inventors have discovered that the above-mentioned problems can be solved by using the formed one, and have completed the present invention.

(1) A first aspect of the present invention is a device for straightening an anode used in electrolytic smelting, which includes a reference block that contacts the back surface of an ear portion of the anode, and a reference block that is provided so as to be able to approach and separate from the reference block. a pressure block, the reference block having a contact surface facing the pressure block, and a block body fixed with bolts to an apparatus frame located on the opposite side of the contact surface; a thickness adjusting member detachably inserted between the block body and the device frame, the thickness adjusting member having a notch formed in a height direction from a lower end thereof, and the thickness adjusting member having a notch formed in a height direction from a lower end thereof; The anode straightening device is inserted and fixed by passing the bolt that fixes the block body.

(2) In a second aspect of the present invention, in the first aspect, the block main body is fixed to the device frame with two or more bolts, and the thickness adjusting member has a plurality of bolts. An anode straightening device in which a corresponding number of incisions are formed.

(3) A third aspect of the present invention is a thickness adjusting member for an apparatus for straightening an anode used in electrolytic smelting, the apparatus comprising: a reference block in contact with the back surface of the ear part of the anode; a pressure block provided so as to be able to move toward and away from the reference block; the reference block in the device has a contact surface facing the pressure block; and a device located on the opposite side of the contact surface. It has a block body fixed to the frame with bolts, and the thickness adjustment member has a predetermined thickness, and a cut is formed in the height direction from the lower end of the thickness adjustment member. This is a thickness adjusting member that is inserted and fixed by passing the bolt between the block body and the device frame.

According to the present invention, the ear portion of the anode can be safely, simply and quickly corrected by a single worker without increasing the size and complexity of the equipment.

FIG. 3 is a side view of main parts of the anode correction device. FIG. 3 is a cross-sectional view of the main parts of the anode correction device. It is a figure which shows an example of the structure of a thickness adjustment member. FIG. 3 is a process diagram showing an example of the flow of an anode correction method. FIG. 3 is a diagram showing the configuration of an anode. FIG. 3 is an explanatory diagram showing the relationship between the center of gravity G of the main body portion of the anode and the position P where the ear portion contacts a bus bar or the like.

Hereinafter, a specific embodiment of the present invention (hereinafter referred to as "this embodiment") will be described. Note that the present invention is not limited to the following embodiments, and various changes can be made without departing from the gist of the present invention.

≪1. About the anode correction device≫
The anode straightening device according to the present embodiment is a device for straightening an anode used in electrolytic smelting, and is a device for straightening distortion caused during casting by, for example, pressing the ears of an anode.

FIG. 1 is a side view of the main parts of the anode correction device according to the present embodiment. Moreover, FIG. 2 is a sectional view of the main parts of the anode correction device. 1 and 2 show a state in which the anode correction device is used with an anode A to be corrected installed. In addition, in FIGS. 1 and 2, the anode to be corrected is indicated by the symbol "A". The anode A includes a main body B and a pair of ears C, C. The anode A is suspended in an electrolytic cell by a pair of ears C, C, and in this state is immersed in an electrolytic solution in the electrolytic cell to perform electrolytic refining.

Specifically, the anode correction device 1 includes an anode holding part 11 that holds the anode A, a reference block 12 that contacts the back surfaces of the ears C and C of the anode A, and a reference block 12 that is provided so as to be able to approach and separate from the reference block 12. and a pressurizing block 13. Further, the reference block 12 has a contact surface facing the pressure block 13 and has a block main body 21 fixed with bolts 14 to the device frame 1F located on the opposite side of the contact surface. It includes a thickness adjusting member 22 that is removably inserted between the frame 1F.

In the anode correction device 1, the reference block 12 and the pressure block 13 are arranged to sandwich the anode A with the anode A being held by the anode holding part 11. Specifically, the reference block 12 is placed on the back side of the anode A (the right side in FIG. 1, the upper side in FIG. 2), and the reference block 12 is placed on the front side of the anode A (the left side in FIG. 1, the top side in FIG. 2, the pressure block 13 is arranged on the lower surface side). Then, the pressure block moving mechanism 15 moves the pressure block 13 toward and away from the reference block 12 .

By moving the pressure block 13 toward the reference block 12 in this manner, the pair of ears C, C of the anode A are pressed by the pressure block 13 toward the reference block 12. Then, the pair of ears C, C is corrected by being sandwiched between the pressure block 13 and the reference block 12.

[Anode holding part]
The anode holding section 11 suspends and holds the anode A. The anode holding section 11 has a pair of ears C, C on its upper surface, and holds the anode A in a suspended state. The structure of the anode holding part 11 is not particularly limited as long as it can hold the anode A, and can be configured, for example, by a rod-shaped member installed so that its upper surface is horizontal. Further, the structure may be such that it is received by a U-shaped member or by a mechanism such as a vise.

In the anode correction device 1, a reference block 12 and a pressure block 13, which will be described later, are arranged so as to sandwich the anode A in a state where the anode A is held by the anode holding part 11.

[Reference block]
As described above, the reference block 12 includes a block main body 21 that has a contact surface facing the pressure block 13 and is fixed with bolts 14 to the device frame 1F located on the opposite side of the contact surface. 21 and a thickness adjusting member 22 that is removably inserted between the device frame 1F and the device frame 1F. By freely attaching and detaching the thickness adjusting member 22, the reference block 12 can adjust the thickness of the reference block 12, that is, the amount of deformation when the pair of ears C, C is pressed by the pressure block 13. It is now possible to do so.

(block body)
The block body 21 constitutes the reference block 12 and has a contact surface facing the pressure block 13. Note that the "contact surface" of the block body 21 is a surface that faces the pressure block 13 and is a surface that comes into contact with the anode A sandwiched between the block body 21 and the pressure block 13.

The block main body 21 is a substantially rectangular parallelepiped block, as shown in FIGS. 1 and 2. The block body 21 is arranged such that its front surface (that is, the surface facing the pressure block 13 (contact surface)) is approximately parallel to the surface of the pressure block 13 (pressure surface), and its back surface (opposite to the contact surface) side surface) is fixed by the device frame 1F.

Here, the block main body 21 is fixed by bolts 14 to the device frame 1F located on the opposite side to the above-mentioned contact surface. Specifically, bolts 14 are provided perpendicularly to the respective surfaces of the device frame 1F and the block body 21 so as to bridge the gap between the device frame 1F and the block body 21. In contrast, the block body 21 is fixed.

The number of bolts 14 is not particularly limited, but is preferably two or more. Further, the positions of the bolts 14 are preferably such that two or more bolts 14 are arranged horizontally at a predetermined interval.

(thickness adjustment member)
The thickness adjustment member 22 is detachably inserted and attached between the block body 21 and the device frame 1F, and adjusts the thickness of the reference block 12 composed of the block body 21 and the thickness adjustment member 22. This is to adjust the

FIG. 3 shows an example of the configuration of the thickness adjusting member 22, and mainly shows a front view of the thickness adjusting member 22, as well as a plan view, a right side view, and a bottom view. As shown in FIG. 3, the thickness adjusting member 22 has a plate shape with a predetermined thickness. In the anode correction device 1, a plurality of thickness adjustment members 22 with different thicknesses are prepared as a set, and the thickness adjustment members 22 with various thicknesses are used depending on the degree of deformation (degree of distortion) of the anode A to be corrected. can be selected and used.

As described above, the thickness adjustment member 22 is detachably inserted and attached between the block body 21 and the device frame 1F. By selecting and using an appropriate thickness adjusting member 22 according to the amount of deformation of the anode A, the thickness of the reference block 12 can be freely changed. As a result, the amount of deformation of the ear portion C of the anode A that is sandwiched between the reference block 12 and the pressure block 13 and press-corrected can be adjusted by simply changing the thickness adjustment member 22 to one with an appropriate thickness. Can be done. This makes it possible to easily and quickly adjust the amount of deformation of the ear portion C.

Here, as shown in FIG. 3, the thickness adjustment member 22 has a notch 22N formed in the height direction from the lower end. The thickness adjusting member 22 is inserted and fixed by passing the bolt 14 that fixes the block body 21 to the device frame 1F through the notch 22N.

According to the thickness adjusting member 22 having such a shape, the thickness adjusting member 22 can be inserted from above between the device frame 1F and the block body 21 so that the notch 22N is aligned with the installation position of the bolt 14. It can be installed by simply following the steps. Furthermore, since the thickness adjusting member 22 is mounted so that the bolt 14 is held between the notches 22N, it hardly moves left or right even during press working, and can be stably held.

Further, when removing the thickness adjusting member 22, the thickness adjusting member 22 mounted between the device frame 1F and the block body 21 can be removed by an extremely simple operation of pulling it upward. Therefore, when selecting an appropriate thickness adjusting member 22 according to the amount of deformation of the anode A to be corrected, it can be done in a short time, and the accuracy of selecting an appropriate thickness adjusting member 22 can be improved. It is also possible to improve it. As a result, the accuracy of correction of the anode A can be improved.

In the past (for example, the technique disclosed in Patent Document 1), the thickness adjusting member was fixed to the block body by bolting. However, when correcting the anode A, it is necessary to select and replace an appropriate thickness adjustment member in order to adjust the amount of deformation, and it is necessary to perform a bolt tightening operation on the thickness adjustment member each time. This was an extremely complicated task for a single worker. On the other hand, according to the thickness adjustment member 22 in the anode correction device 1 according to the present embodiment, as described above, operations such as bolt tightening are not required, and the attachment can be stably fixed. Since it can be easily removed during replacement work, the work can be done safely, extremely simply and quickly by a single worker.

In the thickness adjusting member 22, the shape of the notch 22N is not particularly limited, and may have a size and shape that allow the bolt 14 to pass through. Note that if the size of the notch 22N in the width direction is too large than the diameter of the bolt 14 (the diameter of the circumscribed circle), the stability when the thickness adjustment member 22 is attached may be impaired. The size in the width direction is preferably slightly larger than the diameter of the bolt. In FIG. 3, the broken line portion shown at the notch 22N indicates the cross-sectional shape of the bolt 14.

Further, the number of cuts 22N preferably corresponds to the number of bolts 14 between the device frame 1F and the block body 21, and is preferably two or more. Stability can be improved by forming two or more cuts 22N and attaching the bolt 14 so as to be sandwiched between the respective cuts 22N. Note that FIG. 3 shows an example in which two notches 22N are formed corresponding to two bolts 14.

≪2. About the anode correction method≫
Next, a method for straightening an anode using the above-described anode straightening device 1 will be described. As described above, the anode straightening method is a method of pressurizing and straightening the anode A that has been distorted during casting.

Specifically, as shown in FIG. 4, the anode straightening method includes a preliminary straightening step S1 and a main straightening step S2. Further, the preliminary straightening step S1 includes an anode selection step S11 of selecting an anode A to be straightened, a preliminary straightening step S12 of performing preliminary straightening on the selected anode A, and a thickness adjusting member based on the result of the preliminary straightening. 22, a thickness adjustment member selection step S13 is included.

[Preliminary straightening process]
In the preliminary straightening step S1, prior to the main straightening (S2), the degree of distortion of the anode A to be straightened is measured, and an appropriate thickness adjustment member 22 is selected to be used in the straightening work using the anode straightening device 1. This is the process of deciding.

As described above, the thickness adjustment member 22 can freely change the thickness of the reference block 12 by selecting and using an appropriate thickness adjustment member 22 according to the amount of deformation of the anode A. Thereby, it is possible to adjust the amount of deformation of the ear portion C of the anode A that is sandwiched between the reference block 12 and the pressure block 13 and press-corrected. In this way, when correcting the anode A, selecting an appropriate thickness adjustment member 22 is an important task, and also leads to improving the accuracy of correction.

(Anode selection process)
In the preliminary correction step S1, first, an anode A to be corrected is selected. Specifically, from among the anodes A obtained in the same lot of anode casting (casting with the same melt), a plurality of anodes are selected that have no abnormality such as swelling or warping when visually confirmed.

(Preliminary straightening process)
Next, preliminary correction is performed on the selected plurality of anodes A using the anode correction device 1. At this time, the thickness of the thickness adjusting member 22 is changed by the number of selected anodes A, and the preliminary correction work is performed by each thickness adjusting member 22.

(Thickness adjustment member selection process)
Then, a thickness adjustment member 22 having an appropriate thickness is selected based on the result of the correction of the anode A corrected by the preliminary correction work. Specifically, each of the anodes A that has been pre-straightened (straightened) is suspended in an electrolytic bath, and the verticality is evaluated using a predetermined measuring jig. That is, the correction effect in preliminary correction is evaluated. Note that the method for evaluating the verticality of the anode A is not particularly limited.

As a result, the anode A with the best verticality among the plurality of anodes A that has undergone preliminary correction is determined, and the thickness adjustment member 22 used for the correction of that anode A is used for the main correction of the anodes A of the same lot. This is selected as the thickness adjustment member 22 used for.

Here, in the preliminary straightening process S1, in the preliminary straightening of the plurality of selected anodes A, the straightening work is performed using thickness adjusting members 22 having different thicknesses. At this time, according to the anode correction device 1, the thickness adjustment member 22 has a notch formed in the height direction from the lower end, and the block body 21 and the device frame 1F are fixed to the notch. Since it is inserted and fixed by passing the bolt 14, the operation of attaching and detaching is extremely simple and can be performed quickly.

Thereby, even if a plurality of anodes A are corrected using thickness adjustment members 22 having different thicknesses, preliminary correction can be performed efficiently without requiring a long time. Furthermore, since preliminary correction can be performed with such a simple operation, the accuracy of selecting an appropriate thickness adjustment member 22 can be increased.

[Main correction process]
In step S2 of the main straightening, the thickness adjusting member 22 having the predetermined thickness selected in the step S1 of the preliminary straightening is used to correct the anode A of the same lot as the target anode A in the preliminary straightening. Perform correction.

In this main correction, since an appropriate thickness adjustment member 22 is selected in the preliminary correction step S1, the ear portion C of the anode A, where distortion has occurred, is pressurized and corrected by an appropriate amount of deformation. It is possible to carry out highly accurate correction.

EXAMPLES Hereinafter, the present invention will be described in more detail by showing examples, but the present invention is not limited to the following examples.

[Example 1]
In Example 1, the anode A was corrected using the anode correction device 1 equipped with the thickness adjusting member 22 shown in FIGS. 1 to 3.

As a result, one operator can safely and quickly replace five thickness adjustment members 22 to adjust the amount of deformation during anode correction work (5 to 10 minutes per replacement). I was able to work.

[Comparative example 1]
In Comparative Example 1, unlike Example 1, the anode A was corrected using an anode correction device that fixes the thickness adjusting member by tightening bolts.

As a result, it took more than 20 minutes to replace one thickness adjustment member to adjust the amount of deformation in the anode correction work, so the work was stopped.

[Example 2]
In Example 2, when performing the straightening work of the anode A using the anode straightening device 1 equipped with the thickness adjusting member 22 shown in FIGS. 1 to 3, a preliminary straightening process is performed in which the thickness adjusting member 22 is selected. A series of anode correction methods consisting of (S1) and a main correction step (S2) were carried out.

Specifically, in the preliminary correction step S1, first, five anodes A of the same lot were selected. Next, for each of the five selected anodes A, a thickness adjustment member 22 of different thickness (5 types shown in Table 1 below. A thickness of 0.0 mm means that no thickness adjustment member was used. ) was prepared and preliminary correction was performed. Note that the anode straightening device 1 was used for the preliminary straightening. Then, the straightening effect of the preliminary straightening was evaluated by measuring the verticality of each of the five anodes A after the preliminary straightening.

Table 1 below shows the measurement results of the verticality of the five pre-corrected anodes A. The verticality was evaluated by measuring the distortion (absolute value) at nine locations on the main body of the anode A after preliminary correction, and Table 1 shows the average value of the absolute distortion value.

As shown in Table 1, in the straightening operation using the thickness adjustment member 22 with a thickness of 1.0 mm, the distortion of the anode A after straightening was the least. In the correction used, it was decided to use a thickness adjusting member 22 with a thickness of 1.0 mm.

Next, in step S2 of main correction, main correction was performed on the anodes A (50 pieces) of the same lot using the thickness adjusting member 22 having a thickness of 1.0 mm.

As a result, in all of the anodes A after the main correction, the absolute value of distortion came to be within 1.5 mm, and it was possible to perform correction effectively and improve the accuracy of correction. In addition, since re-straightening is no longer necessary, the overall time for the straightening work can be shortened.

1 Anode correction device 1F Device frame 11 Anode holding part 12 Reference block 21 Block body 22 Thickness adjustment member 22N Notch 13 Pressure block 14 Bolt 15 Pressure block moving mechanism

Claims (3)

A device for straightening an anode used in electrolytic smelting,
a reference block that comes into contact with the back surface of the ear part of the anode;
a pressurizing block that is provided so as to be able to move toward and away from the reference block;
The reference block is
a block body having a contact surface facing the pressure block and fixed with a bolt to an apparatus frame located on the opposite side of the contact surface;
a thickness adjusting member detachably inserted between the block main body and the device frame;
The thickness adjustment member has a notch formed in the height direction from its lower end, and is inserted and fixed by passing the bolt that fixes the block body through the notch.
Anode straightening device. The block body is fixed to the device frame with two or more bolts,
A number of notches corresponding to the number of bolts are formed in the thickness adjusting member.
The anode straightening device according to claim 1. A thickness adjustment member for an apparatus for straightening an anode used in electrolytic smelting,
The device includes:
Consisting of a reference block that comes into contact with the back surface of the ear part of the anode, and a pressure block that is provided so as to be able to approach and separate from the reference block,
The reference block in the device is
It has a block body that has a contact surface facing the pressure block and is fixed with a bolt to the device frame located on the opposite side of the contact surface,
The thickness adjusting member has a predetermined thickness, and has a notch formed in the height direction from its lower end, and the bolt between the block body and the device frame is passed through the notch. be inserted and fixed by,
Thickness adjustment member.

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