JPH05311477A - Liquid feed and discharge method for electrolytic cell for electrolytic refining of metal - Google Patents

Abstract

PURPOSE:To provide the liquid feed and discharge method for electrolytic cells for electrolytic refining of metals which can maintain the liquid levels of the many electrolytic cells at the same liquid level with good workability and facilitates the maintenance and control of the electrolytic cells. CONSTITUTION:An approximately U-shaped pool tank 20 for liquid discharge is juxtaposed with respective electrolytic cell arrays 1A (1B). The liquid discharge ports 10 of the respective electrolytic cells are communicated by a communicating pipe 22 to the pool tank 20. One liquid discharge pipe 24 is connected to the pool tank 20. Then, the electrolyte flowing out of the liquid discharge ports 10 of the respective electrolytic cells 1 and discharged to the pool tank 20 via the communicating pipe 22 is discharged via the liquid discharge pipe 24 to the outside of the electrolytic cells. The liquid levels of the electrolytes in the respective electrolytic cells 1 attached to the respective electrolytic cell arrays are, therefore, kept at the same height. The electrolyte inflow end 24a at the peak of the liquid discharge pipe 24 is held at the position (H) (H>H0) higher than the height (H0) of the bottom of the liquid discharge ports 10 at this time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is generally directed to crude copper, crude lead,
It is related to electrolytic refining technology for various other metals,
In particular, the present invention relates to a method of supplying and discharging an electrolytic solution to and from an electrolytic cell (hereinafter referred to as "supply / drain method").

[0002]

2. Description of the Related Art Conventionally, when electrolytically purifying crude copper, crude lead, and various other metals, a large number of electrolytic cells for containing an electrolytic solution are provided. Usually, however, a plurality of electrolytic cells are provided as shown in FIG. The electrolyzer rows 1A and 1B each including 1 are arranged in parallel with each other. Further, in order to supply the electrolytic solution L to each electrolytic tank 1, a pool tank 2 for supplying a liquid having a substantially U shape is arranged between the electrolytic tank rows 1A and 1B, and the pool tank 2 and each electrolytic tank 1 are provided. A communication pipe 6 is provided between the electrolytic solution supply port 4 and the electrolytic solution supply port 4 so that the pool tank 2 and the electrolytic solution supply port 4 of each electrolytic tank 1 communicate with each other. The liquid supply pipe 8 supplies the electrolytic solution L to the pool tank 2. This liquid supply method is advantageous in that the amount of liquid supplied to each electrolytic cell 1 can be averaged.

On the other hand, each electrolytic cell 1 is provided with a drainage port 10 at a position facing the liquid feed port 4, and a drainage pipe 12 is individually connected to the drainage port 10. Therefore, when the electrolytic solution supplied into the electrolytic bath 1 through the liquid supply port 4 reaches a predetermined liquid level or higher in the electrolytic bath 1, the electrolytic solution passes through the drain port 10 and the drain pipe 12. Is drained to the outside. Further, as shown in FIG. 5, a fulcrum 14 is provided at the drainage port 10 of each electrolytic cell 1.
A weir plate 16 that is rotatable around the
By properly rotating and positioning 6
The drainage height at 0, that is, the liquid level in the electrolytic cell 1 is adjusted.

[0004]

However, in order to make the liquid level of each electrolytic cell constant in the above-mentioned conventional electrolytic cells, an operator installs a weir provided at the drain port 10 of each electrolytic cell 1. It was necessary to rotate the plate 16 and individually adjust while measuring the liquid level of the electrolytic cell. Actually, each electrolytic cell row 1A, 1B is composed of at least 7 electrolytic cells, and hundreds of electrolytic cells are arranged as a whole. Therefore, the work of adjusting the liquid level is complicated. However, it took a lot of time and had a problem in workability.

Further, conventionally, a drainage pipe 12 for draining liquid is required for each electrolytic cell, and the number of pipes increases,
There was also a problem in terms of maintenance.

Therefore, an object of the present invention is for metal electrolytic refining, which has good workability, can maintain the liquid level of a large number of electrolytic cells at the same level, and facilitates maintenance and management of the electrolytic cells. The purpose of the present invention is to provide a method of supplying and discharging liquid in an electrolytic cell.

[0007]

The above object can be achieved by the liquid supply / drainage method in the electrolytic cell for metal electrorefining according to the present invention. In summary, the present invention supplies the electrolytic solution to a plurality of electrolytic cells from the liquid supply port of each electrolytic cell, and the electrolytic solution flowing out from the drain port of each electrolytic cell is drained to the drain pool tank. A method for supplying and discharging metal in an electrolytic bath for metal electrorefining, which is discharged through one drain pipe provided in the pool tank, wherein the electrolysis of the drain pipe provided in the drain pool tank The liquid inflow end is located above the bottom of the drainage port of the electrolytic cell, thereby defining the liquid surface level of each electrolytic cell. .. According to a preferred embodiment, a liquid level adjusting socket is detachably attached to the electrolytic solution inflow end of the drainage pipe, and the electrolytic cell liquid level can be adjusted in a plurality of stages. In addition, the electrolytic solution is supplied to the electrolytic solution through the liquid supply port of each electrolytic tank through one liquid supply pool tank, and the amount of liquid supplied from the liquid supply pool tank to each electrolytic tank liquid supply port is adjusted by the dam member. Can be adjusted at.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for supplying and discharging liquid in an electrolytic cell for metal electrorefining according to the present invention will be described in more detail with reference to the drawings.

According to the present invention, as shown in FIG. 1 and FIG. 2, a pool pool 20 for drainage having a substantially U-shape is provided in parallel with each electrolytic cell row 1A (1B), and Electrolyzer 1
The drainage port 10 is communicated with the pool tank 20 by a communication pipe 22. Further, one drainage pipe 24 is connected to the pool tank 20. Therefore, it flows out from the drainage port 10 of each electrolytic cell 1,
The electrolytic solution discharged to the pool tank 20 via the communication pipe 22 is discharged to the outside of the electrolytic tank via the drain pipe 24. With such a configuration, the liquid level of the electrolytic solution in each electrolytic cell 1 belonging to each electrolytic cell row is the same. At this time, the electrolyte inflow end 24 a at the top of the drainage pipe 24 is configured to be located at a position (H) (H> H ₀ ) higher than the bottom height (H ₀ ) of the drainage port 10.

According to a preferred embodiment of the present invention,
As shown in FIGS. 3A and 3B, the liquid level adjusting socket 30 can be detachably attached to the electrolyte inflow end 24 a of the drain pipe 24.

That is, the liquid level adjusting socket 30 has an inner diameter that can be fitted into the electrolyte inflow end 24a of the drain pipe 24, and has an annular partition wall 32 formed therein. The annular partition wall 32, in FIG. 3 (A), h _1, is formed at the position of _{h 2 (h 2> h 1} ) from the upper end than the lower end. Therefore, in the state shown in FIG. 3 (A), the liquid level of the electrolytic cell 1 is at a position higher than the liquid level (H) defined by the electrolyte inflow end 24 a of the drain pipe 24 by ΔH _1. Maintained. In the state shown in FIG. 3B, that is,
When the liquid level adjusting socket 30 is fitted in the electrolytic solution inflow end 24a of the drainage pipe 24 in a state opposite to the case of FIG. 3A, the liquid level of the electrolytic cell 1 is Liquid pipe 24
Level (H) defined by the electrolyte inflow end 24a of
It is maintained at a position higher by ΔH ₂ (ΔH ₂ <ΔH ₁ ).

As described above, according to the preferred embodiment of the present invention, by mounting the liquid surface level adjusting socket 30 on the electrolytic solution inflow end 24a of the drain pipe 24, all the electrolytic cells belonging to one electrolytic cell row are connected. It is possible to set the liquid level of the tank 1 in three ways, and the workability is extremely good.

Further, in a large number of electrolytic cells having the construction shown in FIG. 4, as shown in FIG. 6, one electrolytic cell row due to deterioration over time, for example, in FIG. Lifted to tank row 1A, resulting in electrolysis tank row 1B
The position of the liquid supply port 4 of each electrolytic cell 1 may vary with respect to the position of the liquid supply port 4 of another electrolytic cell 1. In this case,
The amount of liquid supplied from the liquid supply port 4 of each electrolytic cell 1 of the electrolytic cell array 1B to the electrolytic cell is smaller than the amount of liquid supplied from the liquid supply port 4 of each electrolytic cell 1 of the electrolytic cell array 1B.

In order to deal with such a situation, as shown in FIG. 7, the electrolyte solution inlet port 40 corresponding to each liquid supply port 4 of the liquid supply pool tank 2 will be described with reference to FIG. A weir member similar to that described above, that is, a weir plate 42 can be provided, and the amount of liquid supplied to each electrolytic cell 1 is adjusted and averaged. In the embodiment shown in FIG. 7, the dam plate 42 is configured to rotate around the shaft 44 to adjust the liquid level, but the dam plate 42 is configured to move in the vertical direction. You can also

That is, as can be seen from FIG. 8, the dam plate 42 corresponding to the liquid supply port 4 of each electrolytic cell 1 of the electrolytic cell row 1A having a large liquid supply amount is moved upward, The amount of liquid supplied from the liquid supply port 4 of each electrolytic cell 1 of the electrolytic cell array 1B is the same.

[0016]

According to the method for supplying and discharging liquid in the electrolytic cell for metal electrorefining of the present invention configured as described above, particularly, the electrolytic solution flowing out from the drain port of each electrolytic cell is a pool tank for draining liquid. And is drained through a drain pipe provided in the pool tank. Further, the electrolyte inflow end of the drain pipe provided in the pool tank is drained from each electrolyte tank. Since it is located above the bottom of the mouth, the liquid level of many electrolytic cells can be maintained at the same level with good workability, and the maintenance of the electrolytic cells is easy. Has features.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view of an electrolytic cell for carrying out a liquid supply / drainage method in an electrolytic cell for metal electrolytic refining according to the present invention.

FIG. 2 is a cross-sectional view of a drainage pool tank.

FIG. 3 is a cross-sectional view of a drainage pool tank and a liquid level adjustment socket for explaining the operation of the drainage pool tank.

FIG. 4 is a partial sectional perspective view of a conventional electrolytic cell for metal electrolytic refining.

FIG. 5 is a front view showing a dam plate of a drainage port.

FIG. 6 is a cross-sectional view of a liquid supply pool tank.

FIG. 7 is a front view showing a dam plate of a pool tank.

FIG. 8 is a front view for explaining the action of the dam plate of the pool tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrolysis tank 2 Pool tank for liquid supply 4 Liquid supply port 6, 22 Communication pipe 8 Liquid supply pipe 10 Drain port 20 Pool pool for liquid discharge 24 Drain pipe 30 Liquid level adjustment socket 42 Weir member

Claims (3)

[Claims] 1. An electrolytic solution is supplied to a plurality of electrolytic cells from a liquid supply port of each electrolytic cell, and an electrolytic solution flowing out of a drain port of each electrolytic cell is discharged to a drain pool tank, and A method for supplying and discharging liquid in an electrolytic bath for metal electrorefining, which is discharged through one drain pipe provided in a pool tank, wherein the electrolyte inlet end of the drain pipe provided in the pool tank for drain liquid is provided. Is located above the bottom of the drainage port of the electrolytic cell to define the liquid level of each electrolytic cell, and the liquid supply / drainage method in the electrolytic cell for metal electrolysis refining. 2. The liquid supply / drainage method according to claim 1, wherein a liquid level adjusting socket is detachably attached to the electrolytic solution inflow end of the drainage pipe, and the electrolytic cell liquid level can be adjusted in a plurality of stages. 3. The electrolytic solution is supplied through one liquid supply pool tank to the liquid supply port of each electrolytic tank, and is supplied from the liquid supply pool tank to each electrolytic tank liquid supply port. The liquid supply / drainage method according to claim 1, wherein the amount can be adjusted by a dam member provided in the liquid supply pool layer.