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Horizontal movement type continuous electrolytic method and device of lead in regenerative lead-containing material

A technology of electrolytic regeneration and horizontal movement, which is applied in the direction of photographic technology, equipment, and photographic auxiliary technology, etc., which can solve the problems of affecting production efficiency, increasing the frequency of dredging, and excessive labor workload, so as to achieve continuous stability in the production process and reduce Cathode and anode spacing, conducive to the effect of uniform distribution

Active Publication Date: 2011-06-15
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the conventional box-type electrolytic cell and intermittent electrolysis method are adopted in the implementation of this process. The disadvantages are: (1) Since the cathode and anode in the electrolytic cell are placed vertically, the oxygen produced by the anode and the cathode in different electrolysis stages Part of the generated hydrogen is precipitated from bottom to top, so that the electrolyte between the cathode and anode is filled with a large number of bubbles, forming a gas resistance layer, increasing the cell voltage and energy consumption, and disturbing the uniform distribution of the current; (2) During electrolysis, the electrodes are vertical Placement, in order to avoid the short circuit between the cathode and the anode caused by the shelling of the material in the cathode frame, a larger cathode-anode spacing (such as 8cm) is generally selected, resulting in high cell voltage and large electrolysis energy consumption; (3) Since the electrodes are placed vertically, when When the current is large or in the later stage of electrolysis, a large number of bubbles generated by hydrogen evolution at the cathode will cause the lead powder layer on the surface of the cathode to be washed and loosened, resulting in the dispersion of spongy lead floaters into the external solution, which will easily cause a short circuit between electrodes, and at the same time lead products will also fall into the The bottom of the electrolytic tank causes collection difficulties, increases the frequency of dredging and poses hidden dangers; (4) The production adopts an intermittent operation mode. After the electrolysis is completed, the power supply needs to be cut off, and the heavy cathode plate is lifted out of the electrolytic tank and the lead sludge is taken out , the labor workload is too large, and at the same time affect the production efficiency

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  • Horizontal movement type continuous electrolytic method and device of lead in regenerative lead-containing material
  • Horizontal movement type continuous electrolytic method and device of lead in regenerative lead-containing material
  • Horizontal movement type continuous electrolytic method and device of lead in regenerative lead-containing material

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Embodiment 1

[0029] refer to Figure 1 ~ Figure 4 , a method for horizontally mobile continuous electrolytic regeneration of lead in lead-containing materials, using waste lead-acid batteries and lead-containing paste sludge produced in the production process of lead-acid batteries as raw materials for electrolytic regeneration, during the electrolysis process, alkaline electrolyte is used , the cathode and anode are arranged in a horizontal manner, and the lead-containing paste slurry to be treated is filled and coated on the cathode plate and moves horizontally continuously, and is electrolytically reduced to lead at the same time, realizing the continuous electrolytic regeneration of lead;

[0030] When the electrolysis is running, firstly fill the lead-containing paste evenly in the cathode plate, and then put the cathode plate into the electrolyte one by one from the feeding port through the feeding mechanism, place it on the transmission track, and drive the track drive through the dr...

Embodiment 2

[0036] refer to Figure 1 ~ Figure 4 A device for horizontally moving continuous electrolytic regeneration of lead in lead-containing materials, comprising an electrolytic cell 1 for placing alkaline electrolyte and a cathode disc 7 for placing lead-containing materials to be electrolyzed, the electrolytic cell 1 The lower part is provided with a transmission crawler 3, and the two ends of the transmission crawler 3 are set on the rotating shaft 2, and the rotating shaft 2 is connected to the driving device through transmission;

[0037]The double-row coaxial crawler 3 is horizontally arranged at the lower part of the electrolytic cell, and the shaft is driven by an external motor and a transmission system to move forward continuously; the cathode conductive copper bar 4 is arranged under the middle of the double-row crawler, and the upper part of the copper bar is provided with A horizontal notch for placing a liquid conductive agent; the cathode disk 7 is horizontally placed...

Embodiment 3

[0048] In this embodiment, the electrolysis test: take an appropriate amount of caustic soda solution with a mass concentration of 10% of the waste battery lead paste after pre-desulfurization, and adjust the apparent density of the lead paste to 2.5g / cm in a mixer 3 . After analysis, the material composition is PbO 2 Content is 34.1%, PbO content is 51.2%, sodium hydroxide 0.9%, water 13.8%, fill and smear this lead paste mud material on cathode disc then and weigh the quality of lead paste, make the filling in each cathode disc The amount of lead paste is 10kg.

[0049] Put the cathode disks on the crawler one by one through the lifting device of the feed port of the electrolytic cell, set the motor speed, and make the crawler continuously transport forward at a speed of 0.55m / h. When the cathode disk is conveyed to the discharge port of the electrolytic cell by the crawler, The cathode disk is separated from the power supply through the lifting device, and the electrolysi...

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Abstract

The invention relates to a horizontal movement type continuous electrolytic method of lead in a regenerative lead-containing material and the method uses the lead-containing paste in waste lead acid storage batteries and the lead-containing paste generated in the production process of the lead acid storage batteries as raw material to perform electrolytic regeneration. In the electrolytic process, alkaline electrolyte is used, a cathode and an anode are arranged in a horizontal manner, the lead-containing paste to be treated is filled in a cathode disk to perform continuous horizontal movements; and the lead-containing paste is reduced to obtain lead and realize the continuous electrolytic regeneration of lead. The invention also provides a horizontal movement type continuous electrolytic device of lead in the regenerative lead-containing material. By adopting the method and device of the invention, the continuous production can be realized, the gas lock effect can be avoided or greatly reduced, the current distribution of the cathode and the anode can be improved, the cell voltage can be improved and the production efficiency can be effectively increased.

Description

technical field [0001] The invention relates to the technical field of wet regeneration of lead resources, in particular to a method and a device for continuous electrolytic regeneration of lead in lead-containing materials. Background technique [0002] At present, lead-acid batteries are widely used, but it also brings about the problem of disposal of the batteries after they fail. Due to the particularity of lead materials, if the waste batteries are not handled and utilized well, it will not only cause harm to the ecological environment, but also cause a great loss of lead resources. Therefore, waste lead-acid batteries and other lead-containing materials (such as lead-containing paste sludge produced in the production process of lead-acid batteries) must be properly treated and utilized. For the recycling of waste lead-acid batteries and lead-containing materials, large-scale production of pyrotechnics has been developed, and wet technology has also been developed. Py...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/18
Inventor 高云芳董志根徐新
Owner ZHEJIANG UNIV OF TECH
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