JP2000104193A - Method for short-circuiting electrolytic cell blocks - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a switching device disposed under the floor of an electrolytic cell, to conduct short-circuiting with high efficiency and to improve operability by fixing the end of the terminal busbar of the terminal electrolytic cell of each block of electrolytic cells and a shot-circuiting conductor placed thereon with a clamping means and electrically connecting both terminal busbars through the short-circuiting conductor to form a short circuit. SOLUTION: Two blocks A and B of a plurality of electrolytic cells provided side by side and with an anode and a cathode alternately arranged along the longitudinal direction in each cell are short-circuited. When short-circuiting is needed, a short-circuiting conductor 30 is placed on the end of the terminal busbars 101 of the terminal electrolytic cells A1 and B1 of the adjacent blocks A and B and fixed to the end of the busbar with a clamping means 31. When normal electrolytic refining is performed, the conductor 30 is not placed on the end of both busbars, and both busbars 101 are isolated from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to an electrolytic refining technique such as copper electrolytic refining, and more particularly to an electrolytic cell used in an electrolytic cell used for copper electrolytic refining when an anode (anode) or a cathode (cathode) is pulled up. It relates to the method of shorting blocks.

[0002]

2. Description of the Related Art Conventionally, for example, in copper electrolytic refining, a rectangular electrolytic cell is usually provided, and a plurality of electrolytic cells are arranged side by side to constitute an electrolytic cell block. Is done. For example, in FIG. 3, a plurality of electrolytic cells A _1, A _2, A ₃ · · · · · electrolyzer and the block A consisting of A _n, a plurality of electrolytic cells _{B 1, B 2, B 3} ···· This shows an embodiment in which an electrolytic cell block B made of _Bn is provided. In practice, each of the electrolytic cell blocks A and B has 16 to 17 electrolytic cells, and a large number of such electrolytic cell blocks A and B are provided.

As shown in FIGS. 3 and 4, an anode (anode) 1 made of blister copper (99% Cu) is provided in each electrolytic cell.
And cathodes (cathodes) 2 serving as seed plates are alternately arranged in parallel.

In each of the electrolytic cells, as shown in FIG. 4, bus bars 10 (10 ₁ , 10 ₂ ,...)
10 _n ) are arranged, and on this bus bar 10, ears 1 A of a predetermined anode 1 produced by casting blister copper,
An end 3A of a crossbar (conductive rod) 3 to which a predetermined cathode 2 is attached is disposed. For example, there are 57 anodes and 56 cathodes per electrolytic cell.
The anode 1 and the cathode 2 are electrically connected to only one of the bus bars, respectively. Usually, the anode 1 and the cathode 2 inside each electrolytic cell are connected to a current supply system (Walker system) as shown in FIG. ) At power supply (+,
-).

That is, the electrolytic bath blocks A and B are connected to the electrolytic baths A ₁ , A ₂ , A ₃ ... From the terminal bus bar 10 ₁ of the terminal of the electrolytic bath A ₁ to which the positive (+) pole of the power supply is connected. ... A
_n , and the electrolytic cell B _n ... B
_2, is energized to B _1, and the terminal of the electrolytic cell B ₁ minus the bus bars 10 ₁ power terminal (-) current circuit to flow is formed into a pole.

When copper electrolytic refining is performed using such an apparatus, the anode 1 is consumed over time, and the exhausted anode 1 is pulled out of the electrolytic cell for replacement with a new one. In the electrolytic cell block in which the anode 1 needs to be lifted, a short-circuiting operation is performed to stop energization. Similarly, when the electrodeposition on the cathode 2 is sufficiently achieved, the electrolytic cell block is short-circuited to lift the cathode 2.

Conventionally, in order to perform such a short-circuiting operation, the electrolytic cell equipment is provided with a short-circuiting apparatus 100 for the short-circuiting operation. For example, in the electrolytic cell equipment of FIG. 3, as shown in FIG.
_1, the end portion of the terminal bus bar 10 ₁ B ₁ represents, a plurality of conductors 1
Switching device 1 installed below the floor 102 of the electrolytic cell at 01
03 is connected to the terminal 104. Typically, the switching device 103 is both bus bars 10 ₁ by an electrically non-conductive state (OFF). Therefore, the electrolytic cell blocks A and B
The electrolyzer A ₁ from the terminal bus bar (plus) 10 ₁ of the terminal electrolytic cell A ₁ as described above, A _2, A ₃ ····· flows to A _n, the electrolytic cell B _n by end conductors 11 ..... B ₂ ,
B ₁ is energized, and current flows to the terminal bus bar (minus) 10 _{1 of the} terminal electrolytic cell B ₁ .

However, when the anode 1 or the cathode 2 of each of the electrolytic cell blocks A and B is pulled up and replaced with a new one, the switching device 103 operates the two bus bars 10 _1.
Are electrically connected (ON). As a result, a short circuit is formed. Accordingly, the current applied to the terminal bus bar (plus) 10 ₁ of the terminal electrolytic cell A ₁ is changed to the electrolytic cell A ₁ ,
_{A 2, A 3 ····· A n} , terminal conductors 11 and not flow into the electrolytic cell _{B n ····· B 2, B 1} , the terminal electrolytic cell B _1, which is a low resistance Terminal busbar (minus) 1
0 flows directly into the _1. That is, the power supply to the electrolytic cell blocks A and B is stopped, and the anode 1 or the cathode 2 can be replaced.

[0009]

However, according to the above-described conventional short-circuit method, a long conducting wire 101 for wiring to the switching device 103 installed under the floor of the electrolytic cell, and contact of the switching device itself. There is also a resistance, causing a large resistance loss.

Further, since the switching device 103 is installed under the floor of the electrolytic cell, a switching failure frequently occurs, and the switching device 10 is disposed due to a small installation space of the device.
There is also a problem that the maintenance management of No. 3 is troublesome.

Accordingly, an object of the present invention is to provide an electrolytic cell block in which a switching device disposed under the electrolytic cell installation floor is eliminated, a resistance loss at the time of short circuit is eliminated, a short circuit is performed with high efficiency, and workability is improved. It is to provide a short way.

[0012]

The above object is achieved by a method for shorting an electrolytic cell block according to the present invention. In summary, the present invention is a method for short-circuiting two electrolytic cell blocks each provided with a plurality of electrolytic cells each having a plurality of electrolytic cells in which anodes and cathodes are alternately arranged along a longitudinal direction, wherein each of the electrolytic cells is provided. A short conductor is placed on the end of the terminal bus bar of the terminal electrolytic cell of the block, and the short conductor and the end of the terminal bus bar are fixed by clamping means to electrically connect the two terminal bus bars via the short conductor. And a short circuit is formed to form a short circuit.

According to a preferred embodiment of the present invention, the electrolytic cell is an electrolytic cell used for copper electrolytic refining.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for short-circuiting an electrolytic cell block according to the present invention will be described in more detail with reference to the drawings.

In this embodiment, the present invention will be described as being embodied in an electrolytic cell in copper electrolytic refining. However, the method of the present invention is not limited to copper electrolytic refining, but can be applied to other electrolytic refining techniques.

Referring to FIG. 2, in the present embodiment, a plurality of electrolytic cells are juxtaposed to constitute an electrolytic cell block, and FIG.
As described in connection with the above, a plurality of electrolytic cells A ₁ , A ₂ ,
And electrolyzer block A consisting of A ₃ · · · · · A _n, and electrolyzer block B composed of a plurality of electrolytic cells _{B 1, B 2, B 3} ····· B n are juxtaposed. Usually, each electrolytic cell block A, B
Has 16 to 17 electrolytic cells, and a large number of such electrolytic cell blocks A and B are provided.

As described with reference to FIG. 4, an anode (anode) made of blister copper (99% Cu) is provided in each electrolytic cell.
1 and a cathode (cathode) 2 serving as a seed plate are alternately arranged in parallel. A bus bar 1 on the wall of the electrolytic cell
0 (10 ₁ , 10 ₂ ,..., 10 _n ) are arranged on the bus bar 10, and a lug 1A of a predetermined anode 1 made by casting blister copper, and a predetermined cathode 2 The end 3A of the crossbar (conduction rod) 3 to which is attached is disposed. For example, 57 anodes per electrolytic cell,
The number of cathodes is 56. Anode 1 and cathode 2
Are electrically connected to only one of the bus bars 10. Also in this embodiment, as shown in FIG. 2, the anode 1 and the cathode 2 inside each electrolytic cell are connected to power sources (+,-) by a current supply system (Walker system) as in the conventional case. .

More specifically, the electrolytic cell blocks A and B are connected to the positive electrode (+) of the power supply at the terminal of the electrolytic cell A.
_From the bus bar 10 ₁ of the terminal ₁ to the electrolytic cells A ₁ , A ₂ , A _3.
... flows to A _n, the electrolytic cell B _n · · by end conductors 11
... Electricity is supplied to B ₂ and B ₁ , and electrolytic cell B _{1 at the} terminal
Minus from bus bars 10 _first terminal of the power source (-) current to the electrode circuit to flow is formed.

When copper electrolytic refining is performed using such an apparatus, the anode 1 is consumed over time, and the exhausted anode 1 is pulled out of the electrolytic cell for replacement with a new one. In the electrolytic cell block in which the anode 1 needs to be lifted, a short-circuiting operation is performed to stop energization. Similarly, when the electrodeposition on the cathode 2 is sufficiently achieved, the electrolytic cell block is short-circuited to lift the cathode 2.

According to the present invention, when a short work is required, as shown in FIG. 1, a short circuit is applied to the end of the terminal bus bar 10 ₁ of the adjacent terminal electrolytic cells A ₁ and B ₁ in the electric circuit. The conductor 30 is placed, and the short conductor 30
Is preferably, but not limited to, a rod material having a rectangular cross-section.
Is fixed appropriately.

That is, according to the present invention, the switching device 103 below the floor 102 of the electrolytic cell, which has been conventionally provided, is not required. That is, during the normal electrolytic refining operation, the short conductor 30 is not placed between both busbar ends,
Both bus bars 10 ₁ are electrically disconnected. Therefore, as described above, the electrolytic cell block A, the of B, the terminal bus bar (plus) electrolyte than 10 ₁ vessel _{A 1, A 2, A 3} ·
.... flows to A _n, the electrolytic cell B _n · by end conductors 11
... Electric current is supplied to B ₂ and B ₁ , and current flows to bus bar (minus) 10 ₁ .

On the other hand, when the cathodes of the electrolytic cells A and B are lifted and replaced with new ones, as shown in FIGS. 1 and 2, the end of the terminal bus bar 10 ₁ of the terminal electrolytic cells A ₁ and B ₁ is used. Since the short conductor 30 is placed on the portion, both bus bars 10 ₁ are electrically connected via the short conductor 30, thereby forming a short circuit, and therefore, the terminal bus bar (plus) 10 ₁ is energized. currents are electrolytic cell _{a 1, a 2, a 3} ····· a n, terminal conductors 11 and not flow into the electrolytic cell _{B n ····· B 2, B 1} ,
It flows directly to the terminal bus bar (minus) 10 _{1 of the} terminal electrolytic cell B ₁ . That is, the power supply to the electrolytic cell blocks A and B is stopped, and the anode 1 or the cathode 2 can be replaced.

In this embodiment, the short conductor 30 is made of a rectangular copper rod material and has a cross-sectional area of 280 to 350 mm.
² , the length (L) was 1-2 m. Also, clamping means 3
The 1, multiplied by the clamp 32 of U-shaped short conductor 30 and bus bars 10 _1, to fix the short conductor 30 and bus bars 10 ₁ by tightening bolts 33 screwed into screw holes formed in the side plates of the clamp 32 One used.

Also, should the short conductor 30 be made of copper sulfate (C
Even when uSO ₄ ) or the like adheres, the copper sulfate film can be easily removed by washing with water, which is extremely convenient in terms of maintenance of the apparatus.

The method of short-circuiting an electrolytic cell block according to the present invention is effectively applied to a case where adjacent electrolytic cell blocks are adjacent to each other or a short conductor is near.

[0026]

As described above, according to the method for short-circuiting the electrolytic cell blocks of the present invention, the short conductor is placed on the end of the terminal bus bar of the electrolytic cell at the end of each electrolytic cell block. The end of the bus bar is fixed by clamping means and both terminal bus bars are electrically connected via a short conductor to form a short circuit.Therefore, there is no need for a switching device disposed under the electrolytic cell installation floor. In addition, it is possible to achieve the effects of eliminating resistance loss at the time of short-circuit, performing short-circuit with high efficiency, and improving workability.

[Brief description of the drawings]

FIG. 1 is a view for explaining a method for short-circuiting an electrolytic cell block according to the present invention.

FIG. 2 is a diagram for explaining an arrangement of electrolytic cells used for copper electrolytic refining at the time of short circuit to which the present invention is applied, and a current supply method between electrolytic cells.

FIG. 3 is a diagram showing an arrangement of electrolytic cells used for copper electrolytic refining to which the present invention can be applied and a current supply method between electrolytic cells.

FIG. 4 is a perspective view illustrating an arrangement state of anodes and cathodes in an electrolytic cell.

FIG. 5 is a view for explaining a conventional method of shorting an electrolytic cell block.

[Explanation of symbols]

A, B Electrolytic tank block A ₁ , B ₁ Terminal electrolytic cell 1 Anode 2 Cathode 10 ₁ Terminal bus bar 30 Short conductor 31 Clamping means

Claims (2)

[Claims] 1. A method for short-circuiting two electrolytic cell blocks each having a plurality of electrolytic cells in which anodes and cathodes are alternately arranged along a longitudinal direction, wherein each of the electrolytic cell blocks includes a plurality of electrolytic cells. A short conductor is placed on the end of the terminal bus bar of the electrolytic cell, and the short conductor and the end of the terminal bus bar are fixed by clamping means to electrically connect the two terminal bus bars via the short conductor. And forming a short circuit. 2. The method according to claim 1, wherein the electrolytic cell is an electrolytic cell used for copper electrolytic refining.