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Electrolyte, system and method for waste lead storage battery lead plaster ternary system wet-process lead recovery

A waste lead storage battery, ternary system technology, applied in battery recycling, waste collector recycling, electrolysis process and other directions, can solve the problems of large equipment corrosion, environmental pollution, low recovery rate, etc., to achieve low equipment corrosion and high recovery rate , less corrosive effect

Pending Publication Date: 2021-06-29
赵坤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the technical problems of polluting the environment, large equipment corrosion, low recovery rate and high cost in the existing treatment method of lead paste in waste lead-acid batteries, and to provide a three-component wet system for lead paste in waste lead-acid batteries. Method lead recovery electrolyte, system and method

Method used

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  • Electrolyte, system and method for waste lead storage battery lead plaster ternary system wet-process lead recovery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Waste lead storage battery adopts silica gel battery, and its lead paste 4 contains lead composition 76.94%, and its lead-based phase composition (%):

[0044] Total Pb PbO PbSO 4

PbO 2

Pb 76.94 13.24 26.23 26.12 11.35

[0045] 1. A total of 22.5 L of electrolyte solution 5 is configured in electrolytic cell 1 of 25 L. The concentration of sulfuric acid in electrolyte solution 5 is 0.1 g / L, the concentration of sodium sulfate is 183 g / L, and the concentration of ferrous sulfate is 0.89 g / L;

[0046] 2. After coating the lead paste 4 in the stainless steel cathode frame 2 to be 1392g (dry weight), the size of the cathode frame 2 is 200*200*10mm, and the cathode frame 2 is a louver-type cathode frame, which is enclosed by four slats Frame, the closed frame is provided with a plurality of slats that are parallel to each other and have the same angle with the plane of the closed frame;

[0047] 3. Put the lead-coated cathode frame 2 ag...

Embodiment 2

[0051] Waste lead storage battery adopts silica gel battery, and its lead paste 4 contains lead composition 76.94%, and its lead-based phase composition (%):

[0052] Total Pb PbO PbSO 4

PbO 2

Pb 76.94 13.24 26.23 26.12 11.35

[0053] 1. A total of 22.5L of electrolyte solution 5 is configured in electrolytic cell 1 of 25L. The concentration of sulfuric acid in electrolyte solution 5 is 0.05g / L, the concentration of sodium sulfate is 217g / L, and the concentration of ferrous sulfate is 3g / L;

[0054]2. After coating the lead paste 4 in the stainless steel cathode frame 2 to be 1292g (dry weight), the size of the cathode frame 2 is 200*200*9mm, and the cathode frame 2 is a louver-type cathode frame, which is enclosed by four slats Frame, the closed frame is provided with a plurality of slats that are parallel to each other and have the same angle with the plane of the closed frame;

[0055] 3. Put the coated cathode frame 2 that has been fo...

Embodiment 3

[0059] Lead paste (4) is acid waste lead battery material, containing 74.43% lead, and its lead-based phase composition (%):

[0060] Total Pb PbO PbSO 4

PbO 2

Pb 74.43 12.71 37.24 20.64 3.84

[0061] 1. A total of 22.5 L of electrolyte solution 5 is configured in electrolytic cell 1 of 25 L. The concentration of sulfuric acid in electrolyte solution 5 is 5 g / L, the concentration of sodium sulfate is 296 g / L, and the concentration of ferrous sulfate is 0.1 g / L;

[0062] 2. After coating the lead paste 2 in the stainless steel cathode frame 2 to be 1392g (dry weight), the size of the cathode frame 2 is 200*200*9mm, and the cathode frame 2 is a louver-type cathode frame, which is enclosed by four slats Frame, the closed frame is provided with a plurality of slats that are parallel to each other and have the same angle with the plane of the closed frame;

[0063] 3. Put the lead-coated cathode frame 2 aged for 1 hour into the electrolytic ce...

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Abstract

The invention relates to a system and method for recycling lead in a waste lead storage battery, in particular to an electrolyte, system and method for waste lead storage battery lead plaster ternary system wet-process lead recovery. The electrolyte, system and method for waste lead storage battery lead plaster ternary system wet-process lead recovery aim to solve the technical problems of environmental pollution, high equipment corrosion, low recovery rate and high cost in an existing treatment method of lead plaster in waste lead-acid storage batteries. An electrolyte system adopted by a lead recovery system is a ternary system of sulfuric acid, sodium sulfate and ferrous sulfate, so that selection of lead and titanium-based plated lead dioxide on an anode becomes feasible, the recovery rate is high, side reaction of the anode is effectively inhibited, generation of oxygen is avoided, electrolyte volatilization caused by oxygen overflow is inhibited, and the production operation environment is improved. The concentration of the adopted sulfuric acid is less than 10 g / L, so that the equipment corrosion is small, and the cost is effectively saved.

Description

technical field [0001] The invention relates to a recovery system and method for lead in waste lead storage batteries, in particular to an electrolyte, system and method for wet lead recovery of lead paste ternary system of waste lead storage batteries. Background technique [0002] The processing method of lead paste in the existing waste lead storage battery generally has the following several kinds: [0003] 1. Fire treatment [0004] The typical process of fire treatment is side-blowing furnace reduction smelting-fluosilicate electrolytic refining process. The disadvantage of this process is that carbonaceous reducing agent is needed, so it will inevitably produce lead-containing smoke, sulfur dioxide, carbon dioxide and other waste gases, which is easy to cause Severe environmental pollution and damage to the health of the operator. [0005] 2. Wet recycling [0006] 1) Lead plaster conversion-leaching-electrodeposition method: This method is to desulfurize the lead ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/18C25C7/00C25C7/06H01M10/54C01D5/00
CPCC25C1/18C25C7/00C25C7/06H01M10/54C01D5/00Y02W30/84
Inventor 赵坤
Owner 赵坤