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Combined electrolytic cathode plate

An electrolysis cathode plate and combined technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of high labor intensity for workers, take up a lot of time, increase the area of ​​the electrolysis cathode plate, and reduce the installation The effect of reducing the working time of the tank, improving production and labor efficiency, and increasing the effective time of electrolysis

Inactive Publication Date: 2009-02-04
DONGGUAN SONGSHAN TECH GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The electrolytic output of the electrolytic cathode plate is low and the cost is high, which cannot meet the large-scale industrial production requirements of wet electrolysis, and is only suitable for small and medium-scale production with an annual output of less than 10,000 tons of lead.
[0005] (2) Thickened plates can also be used to increase the electrolysis output appropriately, but due to the increase in the thickness of the raw material layer after paste coating, the resistance will increase, the current effect will be poor, and the power consumption will be greatly increased. At the same time, due to the thickening of the lead paste, the resistance will increase. , is not conducive to electrolysis. Therefore, the range of increasing the electrolysis output by thickening the plate is very limited, and it is not an effective method.
[0006] (3) It is also possible to increase the electrolysis output by adding electrolytic plates and electrolytic cell equipment, but because the higher the design output is, the more electrolytic plates and electrolytic cell equipment are needed, which not only requires increased investment, but also increases the cost of installation. The operation time of the tank and the tank is too long. Since each group of electrolytic tanks is composed of multiple electrolytic tanks and a rectifier, when loading and unloading operations, most of them are powered off. The lower the level of mechanical operation, the greater the labor intensity of the workers. The more time it takes to load and unload the tank, the more the production efficiency will be affected. Therefore, this method can only increase the electrolysis output by a limited amount, which is also one of the reasons why the annual output of the existing technology can only be below 10,000 tons of lead. one
[0007] However, if the area of ​​the single plate of the electrolysis cathode plate is simply increased, another problem will be caused:
[0008] (1) It is very difficult to paste and degrease the large electrolytic cathode plate. When the electrolytic cathode plate is pasted and weighs more than 50KG / piece, normal operation cannot be achieved by manpower
[0009] (2) The wet electrolytic reduction process has certain requirements on the water permeability of the coated lead paste. If it is too dense, the conductivity of the electrolyte is poor, which affects the amount of electrolyte; because usually in the electrolysis process, the coated lead paste must have a certain degree of porosity. After the electrons are deposited on the surface of the lead paste of the cathode, the conduction of the sponge lead and the infiltration of the electrolyte into the lead paste conduct electricity to the negative electrode of the electrolytic plate to form an electrolysis process.
Therefore, the lead paste coated on the electrolytic cathode plate must have a certain degree of porosity. When the general large single-plate cathode plate is used, the lead paste is very easy to fall off. Out of slot job
[0010] (3) The biggest problem is that if the area of ​​the electrolytic cathode plate is made larger, it will not be possible to realize mechanized automatic paste application and depaste, which is a necessary condition for large-scale industrial production of wet electrolysis One, therefore, it cannot meet the large-scale industrial production requirements of wet electrolysis without mechanized automatic paste application and depaste
[0012] (5) Once the large electrolytic plate is damaged, it needs to be repaired as a whole, the repair cost is high, and the construction period is delayed
[0013] Due to the aforementioned defects, the existing wet solid-phase electrolytic reduction process is in the state of small-scale production or testing, and cannot realize large-scale automated production

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0070] Such as Figure 2 to Figure 15 A combined electrolysis cathode plate shown is one of the embodiments of the present invention, and it includes an electrolysis mother board 1, a plurality of electrolysis unit boards 2 and their connecting mechanisms and conductive connectors. The electrolysis mother board 1 is a flat plate structure with The upper end edge 11 and the plate body 12, the upper end edge 11 of the electrolytic mother board 1 is connected with the conductive connector, and is used for the circuit conduction of the electrolytic cathode plate. On the body 12, the area of ​​the electrolytic mother plate is 32-1=31 times larger than the electrolytic unit plate.

[0071] Both sides of the body 12 of the electrolytic mother board 1 are assembled with electrolytic unit boards 2, and each side is provided with four pairs of guide rail connection mechanisms 13 parallel to each other along the transverse direction (X direction). 1. The four secondary guide rails 13 on...

Embodiment 2

[0076] Figure 16 to Figure 19 A combined electrolytic cathode plate shown is the second embodiment of the present invention, which consists of electrolytic mother board 1, 32 electrolytic cell boards 2 and their connecting mechanisms and conductive connectors. The difference from the first embodiment is the connection The mechanism adopts a hanging connection structure, which is composed of 8 pairs of hanging rails 101 arranged longitudinally (Y direction) on the front and back of the electrolytic motherboard, and each pair of hanging rails 101 is respectively provided with 4 pairs of hooks 102 from top to bottom. The electrolytic unit board 2 is also provided with a hanging block 201 adapted to each pair of hooks 102 on the electrolytic mother board 1, and the hanging block 201 on the electrolytic unit board 2 is hung on the hook 102 on the electrolytic mother board 1. To realize its installation on the electrolytic mother board 1; when dismounting, it is only necessary to r...

Embodiment 3

[0078] Figure 25 to Figure 26 The shown combined electrolytic cathode plate is the third embodiment of the present invention, and the difference between it and another variation (see FIGS. 20 to 24) in the first embodiment is the plate body 12 of the electrolytic mother plate 1 It is a stencil structure, and each of its two sides is provided with 8 pairs of guide rail connection mechanisms 13 parallel to each other along the longitudinal direction (Y direction), and a supporting electrolysis is provided at the bottom end of each of the two sides of the body 12 of the electrolytic motherboard 1. The support 12a of the unit board 2, each pair of guide rails is composed of an "L" shaped left guide rail 13a and a right guide rail 13b, and each guide rail forms a "U" shaped track with the electrolytic motherboard 12, and each pair of guide rails 4 The openings are opposite, that is, the opening directions of each left guide rail 13a are all to the right, and the opening directions...

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Abstract

The invention discloses a combined electrolysis cathode plate which comprises an electrolysis cathode plate and a conductive connecting piece, and is characterized in that the electrolysis cathode plate comprises an electrolysis mother plate, a plurality of electrolysis unit plates and connecting mechanisms thereof, wherein, the electrolysis mother plate is in a plane structure, and the upper end of the mother plate is connected with a conductive connecting structure; the connecting mechanism is arranged on the surface of the electrolysis mother plate; the electrolysis unit plates are frame plates which are applicable to paste application and removing devices with surface area smaller than that of the electrolysis mother plate; the electrolysis unit plates are movably arranged on the electrolysis mother plate by the connecting mechanisms, to form a large removable combined electrolysis cathode plate. The combined electrolysis cathode plate of the invention can not only meet the requirements for the mechanical operation during paste application and removing processes, but also realize wet electrolysis mass industrialized production, improve production efficiency, improve current efficiency and reduce power consumption.

Description

technical field [0001] The invention relates to an electrolysis cathode plate, in particular to a combined electrolysis cathode plate. The electrolysis cathode plate can realize large-scale industrial production of wet electrolysis and improve electrolysis output and production efficiency. Background technique [0002] Among the existing waste lead-acid battery lead recycling technologies, the wet electrolytic reduction technology is an advanced regeneration technology, and the electrolytic cathode plate is the necessary production equipment for the wet electrolytic reduction technology to realize the reduction of lead oxide. The basic process of the existing wet electrolytic reduction process is to first coat the electrolytic cathode plate with PbSO 4 , PbO 2 , PbO lead paste, and then put the electrolytic cathode plate into the electrolytic tank for electrolysis, so that the electrolytic negative plate is reduced to lead sponge, and then the electrolytic negative plate is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C7/02C25C1/18
CPCC25C1/18C25C7/02
Inventor 刘志强梁礼祥
Owner DONGGUAN SONGSHAN TECH GROUP
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