CN201686759U - Cathodes for clean maintenance-free electrolytic manganese - Google Patents

Abstract

A cathode for clean and maintenance-free electrolytic manganese, including a cathode plate, a conductive rod, and a handle. The outer layer of the conductive rod, the cathode plate and the handle are made of homogeneous materials. The three are fixedly connected by welding. The upper chamber or the inner and lower chambers are covered with conductive copper cores. The outer layer of the conductive rods and the conductive copper cores are sealed with sealing materials. rows of contacts. The utility model adopts ingenious structural design, which greatly improves its mechanical strength, electrical conductivity and service life, and has stable quality, simple daily maintenance, low cathode manufacturing cost and electrolytic manganese production cost, and high efficiency. It greatly reduces the consumption of copper and effectively saves copper resources. This is of great significance for protecting the earth's scarce resources, saving energy and reducing consumption, green environmental protection, and saving foreign exchange. new initiative.

Description

Cathodes for clean maintenance-free electrolytic manganese

technical field

The utility model relates to the technical field of electrowinning and electrolytic processes, in particular to a cathode for electrolytic manganese.

Background technique

At present, in the electrolytic manganese production process, the cathode is generally made of pure copper row conductive rods, ordinary carbon steel bolts, and stainless steel cathode plates. The cathode plate and the conductive rod are connected by ordinary carbon steel bolts. The appearance of the conductive rod and the contact part with the cathode plate are easily polluted by the electrolyte and corroded during the actual production process, resulting in an increase in contact resistance (the new one currently used in production The cathode resistance is about 90 micro-ohms, and the cathode resistance after 3 months of use is about 190 micro-ohms), and it is necessary to manually remove the bolts from time to time to remove rust and reassemble the cathode. Ordinary carbon steel bolts are more likely to be polluted and corroded by the electrolyte, and cause loosening or Falling off into the electrolytic cell and the finished product when the product is peeled off, the components (Fe, C, S, P, Si) in the carbon steel bolts enter the electrolyte and cause pollution, reducing the purity of the electrolytic manganese (Fe, C, S, P and Si are impurities in electrolytic manganese. Long-term use of this old cathode will lead to a decrease in the purity of the produced electrolytic manganese, which can reduce the purity of the electrolytic manganese by about 0.002-0.005%). The conductive rod is made of pure copper row, with low mechanical strength. The mechanical strength can only be met by increasing the size of the pure copper bar beyond the need for electrical conduction, which increases the amount of copper used and increases the manufacturing cost of the cathode. Low strength, easy to deform during use, easy to cause poor contact between the conductive rod and the common busbar, increase the contact resistance, thereby increasing energy consumption, reducing the output of electrolytic manganese, and need to search manually many times a day to eliminate the contact between the conductive rod and the common busbar. The phenomenon of poor contact of the common busbar, the opening and operation of the cathode are all done by hand, the labor intensity of the workers is high, and the efficiency is low.

Contents of the invention

The technical problem to be solved by the utility model is: aiming at the problems existing in the above-mentioned prior art, to provide a kind of anti-pollution corrosion prevention and reduction, good environmental protection performance, good electrical conductivity, stable quality, high mechanical strength, simple daily maintenance, and low production cost. A clean and maintenance-free cathode for electrolytic manganese that is low cost and easy to realize mechanized operation.

The technical solution adopted by the utility model is: the cathode for clean and maintenance-free electrolytic manganese includes a cathode plate, a conductive rod, and the conductive rod includes an outer layer of the conductive rod and a conductive copper core; the outer layer of the conductive rod and the cathode plate are the same The two are fixedly connected by welding; the outer layer of the conductive rod is covered with a conductive copper core, and the conductive rod in contact with the common busbar has a gap to lead out the conductive copper core, and the conductive copper core is in contact with the common busbar.

In the above technical solution, the outer layer of the conductive rod is also connected and fixed with a handle, the handle, the outer layer of the conductive rod, and the cathode plate are made of the same material, and the three are connected by welding and fixing.

In the above technical solution, the outer layer of the conductive rod and the conductive copper core are sealed with a sealing material.

In the above technical solution, the cathode plate, the outer layer of the conductive rod and the handle are made of stainless steel or titanium, the conductive copper core is made of pure copper, and the sealing material is polymer material.

In the above technical solution, the outer layer of the conductive rod is a closed shell, one end is a square body, the middle section and the other end are concave in the middle or the middle waist is a combination of square body intervals, the middle section and the other end are concave in the middle or the middle waist is concave The inner upper chamber or the inner lower chamber of the spaced combination with the square body is coated with a conductive copper core, and the outer layer of the conductive rod and the conductive copper core are sealed with a sealing material.

The remarkable effect of the utility model is that only the part of the conductive copper core that is in contact with the public busbar is exposed, the rest of the part is sealed and covered in the conductive rod and is in close contact with the outer layer of the conductive rod, and the part of the conductive copper core that is sealed and covered It will not be polluted and corroded by the electrolyte. The conductive rod and the electrode plate are welded and connected so that the electrolyte avoids the pollution of the rusted carbon steel falling off in the traditional technology, which is conducive to the maintenance of the purity of the electrolyte and the stability of the electrolyte volume. The conductive copper core and the common busbar The contact part is flat and the area is small, and the pollution on the surface is easy to be removed, which improves the conductivity and stability of the cathode for electrolytic manganese. The cathode resistance does not increase with the increase of its use time, and is maintained at about 90 microohms No change, there is no need for irregular manual derusting to reassemble the cathode; because the outer layer of the conductive rod is made of stainless steel, it has high mechanical strength and is not easy to deform, and it saves the amount of copper and reduces the cost. The daily maintenance of the cathode is simple and convenient for workers. The labor intensity is greatly reduced, the integrity rate of the cathode is high, and the service life is long, which is conducive to improving production efficiency. Through the use test, the purity of electrolytic manganese is increased by about 0.003-0.006%, the output of electrolytic manganese per production cycle (24 hours) of a single cathode plate is increased from 3.3-3.5 kg to 3.5-3.8 kg, and the power consumption per ton of electrolytic manganese is reduced The amount of copper used for a single cathode is reduced by about half, which reduces the production cost. The width of the contact between the conductive copper core and the common busbar is increased to about 15mm, and the contact area increases. The contact between the conductive copper core and the common busbar The fit is good, which reduces the contact resistance. It is convenient to use the handle to check the electrodeposition quality of the cathode plate during the electrowinning process. Using the handle in the subsequent production process can realize mechanized production, reduce the labor intensity of workers, and improve production efficiency. .

It should be pointed out that copper is an important strategic material of the country, and it is also a rare precious metal resource in the world. The traditional technology of pure copper conductive rod consumes a lot of copper, which exceeds the conductive demand, greatly wastes copper resources, and requires a large amount of foreign exchange for import. The utility model adopts ingenious structural design, which greatly reduces the consumption of copper materials and effectively saves copper resources. This is of great significance for protecting the earth's scarce resources, saving energy and reducing consumption, being green and environmentally friendly, and saving foreign exchange. Carbon economy, a new measure to transform the mode of economic growth.

Description of drawings:

Fig. 1 is the structural representation of the utility model

Figure 2 is a side view of Figure 1

Fig. 3 is a sectional view of A-A of Fig. 1

Fig. 4 is a B-B sectional view of Fig. 1

Fig. 5 is a C-C sectional view of Fig. 1

Fig. 6 is a D-D sectional view of Fig. 2

Figure 7 is a partial enlarged view of I in Figure 2

Figure 8 is a partial enlarged view of II in Figure 6

Notes on drawings:

1——cathode plate 2——conductive copper core 3——conductive rod

4——handle 5——outer layer of conductive rod 6——sealing material

Detailed ways:

Referring to the accompanying drawings, the utility model's clean maintenance-free electrolytic manganese cathode includes a cathode plate 1, a conductive rod 3, and a handle 4. The outer layer of the conductive rod 5, the cathode plate 1 and the handle 4 are homogeneous materials. The outer layer 5 of the conductive rod is covered with a conductive copper core 2 and sealed with a sealing material 6. The conductive rod 3 in contact with the common busbar has a gap to expose the conductive copper core 2. The cathode plate 1, The outer layer 5 of the conductive rod and the handle 4 are made of stainless steel or titanium, the conductive copper core 2 is made of pure copper, and the sealing material 6 is made of polymer material.

Claims (6)

1. the non-maintaining cathode for electrolytic manganese of cleaning comprises cathode plate, current conducting rod, it is characterized in that: current conducting rod comprises the outer and conductive copper core of current conducting rod again; The current conducting rod skin is a homogeneous material with cathode plate, and both are fixedly connected with welding process; Coated with conductive copper core in the current conducting rod skin, the current conducting rod position that contacts with public busbar has breach, draws the conductive copper core, and the conductive copper core contacts with public busbar.

2. the non-maintaining cathode for electrolytic manganese of cleaning according to claim 1 is characterized in that the current conducting rod skin also is fixedly connected with handle, and handle and current conducting rod skin, cathode plate are homogeneous material, and the three connects with the welding fixed form.

3. the non-maintaining cathode for electrolytic manganese of cleaning according to claim 1 is characterized in that sealing with sealing material between current conducting rod skin and the conductive copper core.

4. the non-maintaining cathode for electrolytic manganese of cleaning according to claim 1 is characterized in that cathode plate, current conducting rod skin and handle are stainless steel or titanium material simultaneously, and the conductive copper core is the fine copper material.

5. the non-maintaining cathode for electrolytic manganese of cleaning according to claim 3 is characterized in that sealing material is a macromolecular material.

6. the non-maintaining cathode for electrolytic manganese of cleaning according to claim 1, it is characterized in that the current conducting rod skin is closure casing, one end is a square body, the stage casing and the other end are middle part of the side indent or middle part of the side indent and square body interval combination, the middle part of the side indent of the stage casing and the other end or middle part of the side indent and square body be the interior epicoele or the interior cavity of resorption coated with conductive copper core of combination at interval, and current conducting rod is outer to be sealed with sealing material with the conductive copper core.

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