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Technology for reclaiming lead from waste lead storage batteries by using pulse power supply

A lead-acid battery and pulse power supply technology, which is applied in the field of recycling waste batteries by pulse capacitor technology, can solve the problems of generating large heat, low current density, and evaporation of electrolyte water, and achieves the effects of short time, low power consumption and convenient connection.

Inactive Publication Date: 2012-04-18
ZHEJIANG HUITONG POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the current density is small, the reaction process will generate a lot of heat, it is easy to make the water in the electrolyte evaporate, and the polar plates of the two poles will be polarized quickly, and it needs to be heated or kept stirring to remove the poles during polarization. phenomenon

Method used

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  • Technology for reclaiming lead from waste lead storage batteries by using pulse power supply
  • Technology for reclaiming lead from waste lead storage batteries by using pulse power supply
  • Technology for reclaiming lead from waste lead storage batteries by using pulse power supply

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1 A kind of process of recycling lead in waste lead-acid storage battery by pulse power supply Use the lead plaster made of waste lead-acid storage battery as raw material, first carry out desulfurization treatment to the lead plaster, use the solution of sodium nitrate and sodium nitrite to prepare the lead plaster Perform 5 to 7 times of filtration, apply the lead paste on the electrode separator, and carry out in a closed electrolytic cell, which is divided into 4 to 8 mutually independent areas by 3 to 7 fast electrode separators , the sodium hydroxide solution as the electrolyte is provided in the mutually independent areas, and the concentration of hydroxide ions in the sodium hydroxide solution is 15% to 30%; the upper end of the electrolytic cell is provided with a liquid inlet pipe, and the lower end A liquid outlet pipe is provided for supplementing sodium hydroxide and water to maintain the concentration of free hydroxide ions during the electrolysi...

Embodiment 2

[0021] Embodiment 2 A process of recycling lead in waste lead-acid storage batteries with pulse power supply. Using the lead paste made from waste lead-acid storage batteries as raw material, first desulfurize the lead paste, and use the solution prepared by sodium nitrite to process the lead paste for 5~ 7 times of filtration; the pulse power supply adopts a trigonometric function waveform, and the cycle is 4s; calcium hydroxide is used as the electrolyte in the electrolytic cell, and the concentration of hydroxide ions in the calcium hydroxide is 15% to 30%, and others are the same as those in the examples One is the same.

Embodiment 3

[0022] Embodiment 3 A kind of technique of recycling lead in waste lead-acid storage battery with pulse power supply, pulse power supply adopts triangular wave, cycle is 2s; Connect a container after the liquid outlet pipe, the liquid after reaction in the electrolytic cell is recovered in the described container, in Calcium hydroxide solution is added in the container, and the temperature is lowered so that there are enough hydroxide ions in the solution; others are the same as in Example 1.

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Abstract

The invention discloses a technology for reclaiming lead from waste lead storage batteries by using a pulse power supply, and belongs to the technical field of reclamation and reprocessing of waste lead storage batteries. The pulse direct-current power supply is adopted in electrolysis treatment, the pulse direct-current power supply is connected with an electrolytic bath, 3 to 7 electrode partition plates are arranged in the electrolytic bath, the electrode partition plates partition the electrolytic bath into 4 to 8 independent areas, and each independent area forms a micro electrolysis field in a power-on state; and a liquid inlet pipe is arranged at the upper end of the electrolytic bath, and a liquid outlet pipe is arranged at the lower end of the electrolytic bath. The technology has the advantages of power saving in the whole process flow, low voltage, pulse polarization prevention, short time, low power consumption and no pollution.

Description

technical field [0001] The invention relates to a pulse capacitance process for recovering waste batteries. Background technique [0002] In modern life, lead-acid batteries have been widely used in consumable products in many fields such as automobiles, telecommunications, railways, electric vehicles, solar energy, and other fields. Due to the huge annual consumption of lead-acid batteries, if they can be recycled and reused, they may even be used The recovered products are basically used in the production of lead-acid batteries to realize the full cycle regeneration of waste lead-acid batteries, which not only has extremely high economic benefits, but also has the characteristics of energy saving, consumption reduction and environmental protection, and has significant social benefits. [0003] Wet processing of lead paste to recover lead has always been the concern of the secondary lead industry. However, using the traditional reproduction process to recycle waste lead-aci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54C25C1/18
CPCY02E60/12Y02P10/20Y02W30/84
Inventor 唐路路矫坤远魏兴虎马秀中
Owner ZHEJIANG HUITONG POWER
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