JPS6352007A - Deciding method for thickness propriety of anode plate for electrolysis - Google Patents

Abstract

PURPOSE:To improve the efficiency of electrolytic refining by deciding the thickness of an anode plate from the movement quantity of the movable part of a hydraulic pressure cylinder when the anode plate is corrected. CONSTITUTION:A dog supporting rod 101 which is parallel to the reciprocating direction of the pressure metallic fitting 44 of the hydraulic pressure cylinder 58 of the anode plate 12, e.g., drum part correction part is coupled with the metallic fitting 44 and dogs 102 and 103 are fitted to the rod 101 in position movable states. A limit switch supporting rod 104 which is parallel to the rod 101, on the other hand, is fitted to a frame 52 where the cylinder 58 is fixed, and the rod 104 is provided with limit switches 105 and 106 that dogs 102 and 103 can engage. Then when the metallic fitting 44 is pressed in and reaches a position corresponding to the maximum permissible thickness of the plate 12, the dog 102 strikes on the switch 105 and when the metallic fitting 44 reaches a position corresponding to the minimum permissible thickness, the dog 103 strikes on the switch 106. Namely, only when the dog 102 strikes on the switch 105, it is judged that the thickness of the plate 12 is within a proper range. This structure is provided to another correction part as well and if there is even one improper thickness part, the plate is judged to be a defective.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for determining the suitability of the thickness of an electrolytic anode plate used in electrolytic refining when correcting its shape.

BACKGROUND TECHNOLOGY Generally, electrolytic refining of metals involves arranging a large number of shoulder-type anode plates cast from crude metal obtained by a dry process and thin cathode plates manufactured by a wet process in an electrolytic cell. This is done by suspending the electrode plates and passing a direct current through these electrode plates while circulating the electrolyte. In recent years, in order to increase production efficiency in electrolytic refining, efforts have been made to increase the size of the electrode plates and to increase the number of electrode plates by arranging the electrode plates close to each other. In order to arrange the electrode plates closely while avoiding short circuits, each electrode plate must be vertically suspended and the flatness of the electrode plates must be ensured.

By the way, the anode plates used in the electrolytic refining of steel are usually cast by pouring a molten metal into a number of open horizontal molds placed on a rotating table and cooling and solidifying them. The gJ electrode plate 12 molded in the horizontal mold 11 is peeled off from the mold 11 by being pushed up by a peeling push-up rod 13 provided at the bottom of the mold 11, and cooled with water until it reaches room temperature.

The anode plate 12 cast in this manner is shown in FIGS. As shown in the figure, the anode plate 12 is composed of a main body part 14 and one-ruder parts 15 projecting from both sides of the upper part thereof.

<Problems to be Solved by the Invention> The anode plate 12 cast as described above is subject to various conditions at the time of casting, such as the temperature of the mold, the rotation speed of the rotary table, the casting temperature of the steel molten metal, and the steel molten metal. The thickness of each point on the anode plate 1z may not be the desired thickness depending on the pouring conditions.

If such a defective anode plate having an inappropriate thickness is used for electrolysis, the following problems will occur.

(1) If the anode plate is thick, it may come into contact with the adjacent cathode plate in the electrolytic cell, causing short circuits, non-dissolution of the anode plate, and an increase in the drift of the electrolytic current. Poor arrival,
This results in an increase in electrolysis power and an increase in scrap rate.

(2) If the anode plate is thin, the anode plate may fall off during electrolysis, the shuffler part may break during transportation, and subsequent processing requires a great deal of effort and time.

As described above, if the thickness of the anode plate is inappropriate, various problems will occur, so if the anode plate is inappropriately thick, it is necessary to select it and remove it from the electrolysis line.

Conventionally, there is a technique described in Japanese Unexamined Patent Application Publication No. 173285/1985 in which a step for measuring the thickness of an anode plate is provided in a transfer line of the anode plate. This technology includes a step of checking the maximum thickness of the anode plate and checking its weight after the anode plate straightening process.

However, in this method, the process of measuring the thickness of the anode plate is provided independently from other processes, so it is inefficient from the perspective of the overall electrolytic refining process. The problem is that they haven't.

The present invention was made in order to solve the above-mentioned problems in the conventional method for determining the suitability of anode plate thickness. The purpose is to improve the overall efficiency of electrolytic refining by performing these processes at the same time.

Means for Solving the Problems> The structure of the present invention to achieve the above object is to apply a receiving member to one surface of the anode plate, and install a fluid pressure cylinder at a position corresponding to the receiving member on the other surface of the anode plate. When the anode plate is corrected by pressing a driven pushing member, it is determined whether the thickness of the anode plate is within an allowable range from the amount of movement of the movable part of the fluid pressure cylinder.

Effect> According to the above method, it is determined whether the thickness of the anode plate is within an allowable range from the amount of movement of the movable part of the fluid pressure cylinder that is driven to straighten the anode plate. In other words, the suitability of the thickness can be determined at the same time during the straightening process. The thickness is also within the acceptable range (between the minimum and maximum thickness)
is determined.

Example First, the entire positive plate straightening device including the positive plate loading/unloading device will be described.

FIG. 6 shows the overall plan view of the above-mentioned apparatus configuration, FIG. 7 shows the view from the ■--■ arrows, and FIG. 8 shows the view from the ■--■ arrows.

The anode plates 12 cast in the smelting factory are carried into the carry-in stage 21 in a plurality (approximately 20 plates) by a lift car. In the carry-in stage 21, the anode plates 12 are aligned by the entrance side controls 22 provided on both sides thereof, and the aligned anode plates 12 are suspended by the shield part 15 by the entrance conveyor 23 and withdrawn.

A side regulation 24 is provided at the tip of the entrance conveyor 23, where the anode plates 12 are again aligned one by one, and at the tip, a lifting device 25 is used to lift one anode plate 12 to a predetermined position. Lifted up and lifted up. The lifted anode plate 12 is hooked on the hook 27 of the inlet transfer device 26 and sent to the traverse feed device 28, and when the anode plate 12 reaches above the feed rail 29 of the traverse feed device 28, the anode plate 12 is lowered. arm 30
At the same time, the front and rear doors 31 are closed and the anode plate 12 is sandwiched between the doors 31. Next, the descending arm 30
The anode plate 12 is lowered onto the feed rail 29, and the movement of the feed rail 29 sends the anode plate 12 to the straightening device 32, where it is straightened as will be described later. The anode plate 12 that has been straightened is again placed on the feed rail 29 and sent to the end of the traversing device 28, and after the door 33 is opened, it is lifted there by the gripping claw 35 of the exit transfer device 34 and transferred to the exit conveyor. Thirty-six pieces are transferred onto the stock conveyor 37, and either taken out from the carry-out stage 38 or stored in a stocker (not shown).

Next, the correction section H32 will be explained.

2nd F! ! J is a side view of the correction device, FIG. 3 is a sectional view taken along the line T1 in FIG. 2, FIG. 4 is a sectional view taken along line IV-IV in FIG. 2, and FIG. 5 is a plan view thereof. As shown in FIGS. 2 to 5, the correction part Wt32 includes (a) a trunk holding correction part including a trunk holding correction receiving fitting 41 and its push fitting 42; (b) a trunk correction receiving fitting 43 and its push fitting 42; Torso correction part including pusher fitting 44, [el
Rod part correction part including rod part receiving fitting 45 and its pushing fitting 46, (d) horizontal correction fitting 47 and its pushing fitting 48
(e) a vertical correction part including a vertical correction receiving fitting 49 and its push fitting 50, and each of these correction parts is attached to a pair of opposing frames 51 and 52 with an appropriate interval Supported. These frames 51 and 52 are erected on the bed 53, reinforced by ribs 54, and firmly supported by four connecting rods 55 at predetermined intervals.

(The al trunk holding and straightening part stably and reliably holds the anode plate 12 so that the correction can be performed reliably, and includes a plurality of (four in this embodiment) trunk holding and straightening brackets 4 as receiving members.
1 is attached to the receiving plate 56 of one frame 51 so that the anode plate 12 comes into contact with an appropriate location on the main body portion 14 on the curved surface 12a side of the anode plate 12 when the anode plate 12 is placed in a predetermined position. As shown in FIG. 3, the receiving plate 56 has a flat receiving surface large enough to cover the entire surface of the main body portion 14 of the anode plate 12, and is fixed to one frame 51. On the other hand, the torso holding correction bracket 4] is fixed on the receiving plate 56 via a liner (not shown).
The receiving surface of the receiving plate 56 protrudes slightly from the receiving surface of the receiving plate 56. This amount of protrusion can be adjusted appropriately by changing the thickness of the liner, and in this example, the amount of protrusion can be adjusted as appropriate by changing the thickness of the liner.
Considering the allowable height of the protrusion 2, it is set at around 3m+a. The receiving surface of the receiver 41 is formed with unevenness so as to securely hold the anode plate 12, and in this embodiment, a multi-striped groove with a chevron-shaped cross section is formed. Further, the receiving metal fitting 41 is arranged inside the anode plate 12, avoiding the peripheral edge of the anode plate 12 where a protrusion such as a calyx (bulge on the peripheral edge of the anode plate 12) is formed.

In addition, in this embodiment, a total of four torso holding correction brackets 4 are provided at the four corners.
1 is provided, but five or more may be provided around the torso correction section, which will be described later.

On the other hand, fluid pressure cylinders (eg, hydraulic cylinders) 57 are fixed to the other frame 52, facing these brackets 41, and each fluid pressure cylinder 571
ζ is attached with a pusher 42 as a pushing member that is in contact with the receiver 41, and the pusher 42 moves toward and away from the receiver 41 by the operation of the fluid pressure cylinder 57.

(The bl body part correction part corrects the warpage of the main body part 14 of the anode plate 12 held by the above-mentioned body part holding correction part. The present embodiment has two torso correction receiving fittings 43 as receiving members, a pushing fitting 44 as a pushing member, and a fluid pressure sill 58, and their configuration ( This is similar to the above-mentioned torso holding and correcting part.The torso correcting part may have 1 ([!1 or more) in the center of the main body portion 14.

(The Cl rod part correction part is a protrusion 1 formed on the mold surface 12b side of the anode plate 12 due to the push-up rod 13 for peeling.
9, and is disposed where the protrusion 19 is located when the anode plate 12 is vertically placed in a predetermined position. This rod part correction part also has a rod part receiving fitting 45 as a receiving member, a pushing fitting 46 as a pushing member, and a fluid pressure cylinder 59 for driving them, and its structure is the same as that of the above-mentioned trunk holding correction part. be.

fd) The horizontal correction unit corrects the bending of the shoulder portion 15 of the anode plate 12 so that its center line in the thickness direction passes through the center of gravity G of the main body portion 14, as shown in FIG. The horizontal correction fittings 47 as two receiving members are attached to the anode plate 1.
2 is placed vertically in a predetermined position.
Horizontal correction push metal fittings 48 are fixed to one frame 51 so as to abut on the side surfaces of the overhanging portions of 5 and so that their receiving surfaces are vertical, while facing them and attached to the other frame 52 as push members. is attached to the receiver 47 by a guide bar 60 so as to be able to move toward and away from it, and is driven by a fluid pressure cylinder 61. As shown in FIG. 10, the horizontal correction bracket 47 protrudes from the hot water surface 12a (reference surface) of the anode plate 12 at a predetermined position by a predetermined distance Bx;
The horizontal correction pusher 48 has a length t corresponding to its protrusion amount! It has a step that is retracted toward the mold surface 12b side. Note that the amount of protrusion of this receiving metal fitting 47 can be adjusted by changing the thickness of a liner (not shown) interposed between it and the frame 52.
By changing the amount of protrusion and the shape of the pusher 48, the degree of bending of the shoulder portion 15 can be changed appropriately.

+e) The vertical correction section is for correcting the lower surface of the shoulder portion 15 of the anode plate 12 by bending it downward so that it is horizontal, that is, perpendicular to the reference plane. 2 as a receiving member
The vertical straightening brackets 49 each have a horizontal receiving surface that comes into contact with the lower surface of the shoulder portion 15 when the positive Ti plate 12 is placed in a predetermined position, and are each fixed to the frame 51. Further, above and facing the receiving fittings 49, a fluid pressure cylinder 62 to which a vertical correction receiving fitting 50 as a pushing member is attached is also fixed to the frame 51, and when the hydraulic cylinder 62 is actuated, the pushing The fixture 50 is designed to move toward and away from the receiving fixture 49 vertically.

Further, the straightening device 32 is connected to the feed rail 2 of the lateral feed device 28.
Lifting device 6 for lifting anode plate 12 on 9 to a predetermined height
It has 3. The lifting device 63 has a pair of lifting levers 64 that are rotatably supported on the side of the frame 52 and a fluid pressure cylinder 65 that drives the lifting levers. It comes into contact with the lower surface of the shoulder portion 15 of the anode plate 12 on 29 and lifts it to a position equivalent to the upper surface of the vertical correction bracket 49. The straightening device 1132 also includes a push-out device 66 for pushing back the anode plate 12 after straightening, and is configured to engage with an appropriate position on the hot water surface 12a side of the main body portion 15 of the positive plate 12. Plural (four in this example) extruded metal fittings 6
7 is provided so as to be movable in the horizontal direction by a hydraulic cylinder 68 attached to the frame 51. Furthermore, as shown in FIG. 2, a belt conveyor 69 for discharging powdery waste is provided below the transverse feeder [28], and the waste generated by the straightening work is conveyed to the belt via a collection guide 70. It falls onto a conveyor 69 and is collected by a scrap boat 71 shown in FIG.

Each fluid pressure cylinder 57 in the trunk holding correction section, trunk correction section, hood correction section, horizontal correction section, and vertical correction section,
The movable parts of 58, 59, 61, and 62 (for example, the rod or the pusher at the tip of the rod) are equipped with position detection devices to detect whether each part to be corrected has an allowable thickness or whether it has been correctly corrected. A mechanism is provided.

Since these position detection mechanisms have the same configuration, the position detection mechanism in the torso correction section will be described here as a representative.

As shown in FIG. 1, the fluid pressure cylinder 58 of the torso correction section
A dog support rod 101 parallel to the reciprocating direction of the cylinder S8 is coupled to a pusher 44 which is a movable part of the cylinder S8, and two dogs 102 and 103 are attached to this dog support rod 101 in a manner that allows the attachment position to be changed. There is. On the other hand, a limit switch support rod 104 parallel to the dog support rod 101 is attached to the frame 52 to which the fluid pressure cylinder 58 is fixed, and the dogs 102 and 103 are respectively engaged with the limit switch support rod 104. Matchable limit switches 105, 106 are provided. Dog 102,
The positional relationship between the limit switches 105 and 106 is such that when the pusher 44 is pushed in by the operation of the fluid pressure cylinder 58 and the pusher 44 comes to a position corresponding to the maximum allowable thickness of the positive plate 12, the dog 102 is limit switch 10
The dog 103 is arranged so as to strike the limit switch 106 when the pusher 44 reaches a position corresponding to the minimum allowable thickness of the anode plate 12.

Fluid pressure cylinder 57° 59.61 in other correction part,
62 also has a similar structure. However, in the horizontal line correction section, it is also determined whether the center line of the shoulder portion 15 passes through the center of gravity G of the main body portion 14 or within its permissible range.

Limit switches 105, 106, etc. in each part are connected to a display device etc. via a processing device, and the anode plate 12
The appropriate or inappropriate thickness of the material is notified through a display or an alarm. In the straightening device 32, when the anode plate 12 is carried in by the feed rail 29 of the lateral feed device 28, the anode plate 12 is first lifted from the feed rail 29 by the lifting device 63.

Next, the fluid pressure cylinder 57 of the torso holding and straightening section is actuated to advance the pusher 42 to press the anode plate 12 against the torso holding and straightening receiving fitting 41. The hydraulic cylinders 58 and 59 are operated to advance the pusher fittings 44 and 46, correct the warpage of the anode plate 120, crush the protrusion 19 caused by the push-up rod 13, and further push the pusher fittings 41 and 43 forward. Crush calyxes, bulges, castings, etc. that have a protrusion of .45 or more. In addition, in synchronization with this, the fluid pressure cylinder 61 of the horizontal correction section is operated to advance the pusher 48 to correct the bending of the shoulder portion 15 of the anode plate 12 in the horizontal direction. Thereafter, the hydraulic cylinder 62 of the vertical correction section is operated to remove the pusher 50.
is lowered to straighten the lower surface of the shoulder portion 15 horizontally.

In each of the above straightening steps, the fluid pressure cylinders 57 to 6
Bracket 42° 44.46, 48, 5 which is the movable part of 2
The dogs 102, 103, etc. move due to the extrusion movement of 0,
It is determined whether the thickness of the portion to be corrected is within an appropriate allowable range based on engagement or non-engagement between these and the limit switches 105 and 106. For example, regarding the torso correction section, if the dog 102 does not hit the limit switch 105 (of course, the dog 103 also hits the limit switch 105)
06), the anode plate 12 is determined to be thicker than the maximum allowable value, and if the dog 102 hits the limit switch 105 and the dog 103 hits the limit switch 106, The anode plate 12 is determined to be thinner than the minimum allowable value. In other words, one dog 1
02 hits the limit switch 105, it is determined that the thickness of the anode plate 12 is within the appropriate range.

If even one of the parts to be corrected has an inappropriate thickness,
The anode plate 12 is determined to be a defective product.

After the pressure of each fluid pressure cylinder 57 to 62 reaches a predetermined value and correction is completed, each cylinder 57゜58, 59, 61,
62 is retracted and the pushing device 66 is operated, the positive plate 12 is transferred from the vertical straightening bracket 49 onto the lifting lever 64, and then the lifting device M63 is released and the positive plate 12 is placed on the feeding rail 29. It will be placed. The straightened Fa+> plate 12 is then ejected from the straightening device 32 by the feed rail 29.

Among the anode plates 12 carried out, the good ones are transferred to the stock conveyor 3.
7, they are sent to the stocker, and after a predetermined number are collected, they are sent to the next process. Defective products are carried to the exit side via conveyors 36 and 38, that is, they are separated from non-defective products, and are collected and processed.

In the above embodiments, a dog and a limit switch are used as the position detection mechanism, but other sensors such as a potentiometer, a displacement meter, and an optical sensor can also be used. Further, in the above embodiment, it is possible to correspond to different allowable depth ranges by changing the position of the dog, but in order to facilitate this, a scale may be provided on or near the dog support rod 101. can also be considered.

<Effects of the Invention> According to the method for determining the suitability of the thickness of an anode plate for electrolysis according to the present invention, the suitability of the thickness is also determined during the straightening process of the anode plate, so that the efficiency of the entire electrolysis system is improved. However, since suitability is judged only by thickness, the judgment results are clear.
Post-processing becomes easier.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an embodiment of the thickness suitability determination method according to the present invention, FIG. 2 is a side view of the correction device, and FIG.
- ■ Cross-sectional view, Figure 4 is the IV-IV cross-sectional view of Figure 2, Figure 5
The figure is a plan view of the same, FIG. 6 is a plan view of the correction device including the anode plate loading/unloading device, and FIG. 7 is a view taken along the ■-■ arrow in FIG. 6.
Figure 8 is a view taken along the ■-■ arrow in Figure 6, Figures 9 and 10 are explanatory diagrams of horizontal correction, Figure 11 is a sectional view of the anode plate being peeled off from the mold, Figures 12 and 10 are FIG. 13 is a front view and a side view of the anode plate. In the drawing, 12 is an anode plate, 32 is a correction device, 41.43, 45, 47, 49 are metal fittings, 42.44,
46, 48, 50 are pusher fittings, 51.52 is a frame, 56 is a receiving plate, 57.58, 59, 61, 62 are fluid pressure cylinders, 10
1 is a dog support rod, 102 and 103 are dogs, 104 is a limit switch support rod, and 105 and 106 are limit switches. Patent applicant Mitsui Mining & Mining Co., Ltd. Agent

Claims (1)

[Claims] When straightening the anode plate by applying a receiving member to one side of the anode plate and pressing a pushing member driven by a fluid pressure cylinder to a position corresponding to the receiving member on the other side of the anode plate, the movement of the fluid pressure cylinder is performed. A method for determining suitability of thickness of an anode plate for electrolysis, characterized in that it is determined whether the thickness of the anode plate is within a permissible range based on the amount of movement of the parts.