KR20120112934A - A corrosion inhibiting cover of a copper electrolytic refining for negative plate - Google Patents

Abstract

The present invention relates to a negative electrode plate for copper electrolytic refining having a corrosion protection cover at a welded part, and an object thereof is to prevent galvanic corrosion of the hanger and electrodeposition plate of the negative electrode plate for copper refining, thereby increasing copper collection efficiency to increase productivity. To maximize.
The present invention for achieving the above object is formed in the shape of a rectangular cross-section rod of the same material, a hanger in which a groove is formed in one longitudinal center of the cross-section in the cross section, and welded welded in both sides symmetrically on the cross-section in a state where the upper end is fitted in the groove of the hanger. It relates to a copper electrolytic refining cathode (Cathode) formed of a stainless electrodeposition plate formed and coupled, at least one movement hole in the width direction,
The copper plate for electrolytic refining;
It includes a corrosion prevention cover formed of the same length as the width of the electrodeposition plate to surround the top of the hanger and the electrodeposition plate.
Accordingly, by preventing galvanic corrosion of the hanger and the electrodeposited plate of the copper electrolytic refining plate, there is an advantage of maximizing productivity by increasing the copper collection efficiency.

Description

Corrosion prevention cover of negative electrode plate for copper electrolytic refining {A CORROSION INHIBITING COVER OF A COPPER ELECTROLYTIC REFINING FOR NEGATIVE PLATE}

The present invention relates to a cathode electrolytic refining cathode plate (Cathode), and more particularly, to prevent corrosion of the anode electrolytic refining anode plate disposed so as to prevent corrosion by the coupling portion of the anode plate hanger and electrodeposition plate to the outside. It is about a cover.

In the electrolytic refining process, as shown in FIG. 1A, the positive electrode plate (PP) (Anode) and the negative electrode plate (MP) ( Cathode (final edition) is charged.

The distance between the negative electrode plate MP and the positive electrode plate PP, i.e., the distance between the poles (the "P" display area), is generally arranged at 98 mm, and is connected to the bus bars of the (+) and (-) poles. Each one is up.

Therefore, the positive electrode electricity flows through the electrolytic solution EW in which copper sulfate (CuSO ') is the main component to the negative electrode. At this time, copper (Cu) in the positive electrode in the positive electrode is electrodeposited into the negative electrode plate MP, that is, the end plate.

Electrolyte (EW) is designed to flow a predetermined amount continuously to each electrolytic cell (CC), it is equipped with the necessary equipment, such as a facility for the addition of heat exchangers and additives (not shown) for maintaining the temperature of the electrolyte (EW) Is provided.

Some of the electrolytic solution (EW) is drawn off in a bleeding process to remove copper components and impurities.

Various kinds of the cathode electrolytic refining negative electrode plate MP used for such use are disclosed.

For example, as shown in FIG. 1B, the "cathode for electrolytic refining" (10) (Patent Registration No. 0951436, filed by the present applicant on August 26, 2008 and registered on March 30, 2010) ( Hereafter, the " cathode plate " is representative, and the contents thereof are as follows.

The negative electrode plate 10 is composed of a hanger 11 and the electrodeposition plate 13, the hanger 11 is made of copper material, is formed long in the shape of a rod of a rectangular cross section, the electrode plate 13 in one longitudinal direction The groove 12 into which one end is inserted is formed.

After inserting one end of the stainless steel electrodeposition plate 13 into the groove 12, the welded portion 20 is formed by welding with a Monel metal welding material, and the bonding of the electrodeposition plate 13 and the hanger 11 is completed. .

In addition, the upper end of the electrodeposition plate 13 has a movement hole 14 is formed to pass through the hook device (not shown) to facilitate the movement in the electrolytic cell (CC) as described above.

However, welding with the above-described Monel metal welding material improves the suspension property of the negative electrode plate 10 and improves the productivity of the welding process. However, due to galvanic corrosion, an electrical chemical reaction caused by a potential difference between dissimilar metals, The hanger 11 and the electrodeposition plate 13 had a problem that the end portion ("a" indicated portion) of the cross section of the welded portion 20 was rapidly corroded by copper sulfate (CuSO '), which is the main component of the electrolytic solution EW.

As such, the corroded hanger 11 and the electrodeposition plate 13 have a sharp decrease in cross-sectional area, as shown by the double-dotted line ("EL" indication region) of FIG. As a result, the net copper collection rate is lowered, resulting in a decrease in production.

Furthermore, the welded portion in which the different metals such as the hanger 11, the electrodeposition plate 13, and the monel metal welding material are concentrated has a severe galvanic corrosion due to the potential difference between the dissimilar metals as described above, so that the lifetime of the negative electrode plate 10 is short. There was a problem losing.

The present invention has been made to solve the conventional problems as described above, the object of the present invention is the galvanic corrosion due to the potential difference between the dissimilar metal between the hanger of the copper electrolytic refining negative electrode plate made of mutually dissimilar metal and electrodeposition plate welding ( Galvanic Corrosion).

In addition, another object of the present invention, as described above, to prevent the corrosion of the hanger and electrodeposition plate, to increase the collection efficiency to maximize the productivity.

In addition, another object of the present invention is to prolong corrosion of the negative electrode plate by preventing corrosion of the welding part of the negative electrode plate in which dissimilar metal materials such as hangers, electrodeposition plates, and welding materials are concentrated.

The present invention for achieving the above object is formed in the shape of a rectangular cross-section rod of the same material, a hanger in which a groove is formed in one longitudinal center of the cross-section in the cross section, and welded welded in both sides symmetrically on the cross-section in a state where the upper end is fitted in the groove of the hanger. It relates to a cathode electrolytic refining cathode plate (Cathode) formed of a stainless electrodeposition plate bonded to form,

The copper plate for electrolytic refining;

Comprised of a rectangular cross-section to surround the hanger, and comprises a corrosion preventing cover formed in the same length as the width of the electrodeposition plate.

According to the present invention having such a structure, the hanger and electrodeposition plate of the copper electrolytic refining negative electrode plate made of mutually dissimilar metals have an effect of preventing galvanic corrosion caused by sulfuric acid.

In addition, by preventing the corrosion of the hanger and electrodeposition plate at the source, it has the effect of maximizing productivity by raising the copper collecting efficiency.

In addition, the welding part of the negative electrode plate in which the dissimilar metal materials such as a hanger, electrodeposition plate, and monel welding material are concentrated is not exposed to sulfuric acid, thereby extending the life of the negative electrode plate.

In addition, there is an effect of obtaining a trust to users by widely supplying a negative electrode plate prevented corrosion of the weld.

Figure 1a is a view showing the electrolytic refining process,
Figure 1b is a perspective view showing a conventional copper electrolytic refining negative plate,
2 is a perspective view showing a corrosion preventing cover according to an embodiment of the present invention;
Figure 3 is an exploded perspective view showing a method of coupling a corrosion protection cover according to another embodiment of the present invention,
Figure 4 is a side view showing the anti-corrosion cover is completed in the copper electrolytic refining negative electrode plate,
5A and 5B are cross-sectional views taken along lines “A”-“A” and lines “B”-”B” of FIG. 4.

Referring to FIG. 2, the corrosion preventing cover 100 of the anode plate for copper electrolytic refining according to the present invention is made of a stainless material, and includes a hanger case 110, an opening 130, and a mounting flange 150.

The hanger case 110 is formed in a square tubular shape so as to surround four sides on the cross section of the hanger 11, and is formed in a rather large standard so as to be easily combined with the hanger 11 in a coupling method described later.

The opening 130 is formed in one side of the hanger case 110 in the longitudinal direction, and the opening 130 is formed on any one side of the four sides of the hanger case 110, and the one side of the hanger 11 described above. Combined electrodeposition plate 13 is to be formed to pass through.

The mounting flange 150 is formed in a symmetrical cross-section in the lower vertical direction of the end of the opening 130 is formed.

The mounting flange 150 has a cutout portion 151 formed as much as the portion where the moving hole 14 of the negative electrode plate 10 is formed, and moves the negative electrode plate 10 to a moving hook device (not shown) so that no interference occurs. It was.

With reference to Figures 3 to 5 will be described a coupling method of the anti-corrosion cover 100 and the negative electrode plate 10 according to the present invention.

First, one end of the anti-corrosion cover 100 according to the present invention is fitted to the end of the hanger 11, at this time, the electrodeposition plate 13 is coupled to the opening 130 and the mounting flange 150 on the lower side of the hanger ) And then slide in the longitudinal direction to complete the joining.

 After inserting the anti-corrosion cover 100 into the hanger 11 of the negative electrode plate 10 as described above, the mounting flange 150 is welded in the longitudinal direction while being in close contact with the electrodeposition plate 13 without any gap and is primarily used. The installation is completed.

Then, the gap between the hanger 11 formed at both ends of the anti-corrosion cover 100 is filled with welding beads, or the end of the anti-corrosion cover 100 is hammered into close contact with the hanger 11. You may weld in the state made.

At this time, as shown in Figure 5 a) and b), the corrosion protection cover 100 according to the present invention is as close as possible to the lower side and the welded portion 20 with the hanger 11 and the electrodeposition plate 13 is mounted. It is desirable to avoid interference.

As such, when the coupling of the anti-corrosion cover 100 according to the present invention is completed, as shown in FIG. 5, a copper material 160 of the same material is inserted into an empty space portion in which the cutout 151 is formed. Welding in a state is completed mounting of the corrosion protection cover 100 according to the present invention.

The welding part 20 of the copper electrolytic refining negative electrode plate 10, in particular, the hanger 11 of the same material and the electrodeposited plate 13 made of stainless steel by the corrosion preventing cover 100 according to the present invention, which has been mounted as described above, Consists of different metals such as Monel welding material to prevent the welding portion 20 having a large potential difference between dissimilar metals from being exposed to the outside, thereby preventing galvanic corrosion caused by sulfuric acid, thereby increasing copper collection efficiency. Productivity has improved.

In addition, as described above, the welding part 20 of the negative electrode plate 10 in which the dissimilar metal materials such as the hanger 11, the electrodeposition plate 13, and the welding material are concentrated is not exposed to sulfuric acid to extend the life of the negative electrode plate 10. .

Corrosion-resistant cover 100 of the copper plate for electrolytic refining according to the present invention may cover the hanger 11 by forming a plate of stainless material as in the above embodiment, by extruding synthetic resin in the same shape to copper electrolytic Even if the hanger 11 of the refining negative electrode plate 10 is covered, it is a matter of course that the object of the present invention can be achieved.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Such modifications will fall within the scope of the claims of the present invention.

10; cathode plate 11; hanger
13; electrodeposition plate 20; welding part
100; anti-corrosion cover 110; hanger case
130; opening 150; mounting flange
151; incision 160; copper

Claims (5)

It is formed in the shape of a rectangular cross-section rod of the same material, and is formed by joining and forming a hanger in which the groove is formed in the longitudinal longitudinal direction of one side of the cross section, and a welded portion welded in both sides symmetrically in the cross section in a state where the top is fitted in the groove of the hanger, and at least in the width direction. It relates to a copper electrolytic refining cathode (Cathode) consisting of a stainless steel electrodeposition plate having one or more moving holes,
The copper plate for electrolytic refining;
Corrosion preventing cover of the negative electrode plate for copper electrolytic refining, characterized in that it comprises a corrosion prevention cover formed in the same length as the width of the electrodeposition plate to surround the top of the hanger and the electrodeposition plate. The method of claim 1,
The anti-corrosion cover is a cross-sectional rectangular tubular hanger case disposed on the outside of the hanger;
An opening formed in one longitudinal direction of the hanger case;
The anti-corrosion cover of the anode plate for copper electrolytic refining, characterized in that consisting of a mounting flange formed in a symmetrical cross-section in the direction perpendicular to the opening end. The method of claim 2,
The mounting flange further comprises a cutout portion formed so that interference does not occur on the upper side of the movable hole corrosion prevention cover of the copper electrolytic refining negative electrode plate. The method according to claim 1 or 3,
The anti-corrosion cover, the corrosion prevention cover of the negative electrode plate for copper electrolytic refining, characterized in that it further comprises a copper disposed in the incision empty space. The method of claim 1,
The corrosion protection cover is a corrosion protection cover of the negative electrode plate for copper electrolytic refining, characterized in that any one of stainless steel or synthetic resin.

Images