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Method for preparing and reusing barium plumbate from waste positive active substances

A positive active material and recycling technology, which is applied to battery electrodes, electrical components, circuits, etc., can solve problems such as complex methods, and achieve the effects of improving cycle life, increasing utilization rate, and reducing pollution

Active Publication Date: 2013-09-11
TIANNENG GRP JIANGSU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also reports in the literature that use high-purity lead oxide or lead dioxide to prepare barium lead acid, but the method is more complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for recycling barium cuprate prepared by using waste positive electrode active material, comprising the following steps:

[0018] (1) Determination of the lead content of the spent cathode active material: According to the national standard method, the lead dioxide content in the spent cathode active material is measured, and the balance is calculated as lead monoxide, and the lead content of the spent cathode active material is calculated;

[0019] Waste positive electrode active material 100g, lead dioxide accounts for 85%, aluminum oxide accounts for 15%,

[0020] Then the total lead content in the spent positive electrode active material is:

[0021] 100×85%÷239.2+100×(1-85%)÷223.2 = 0.422 mol

[0022] (2) According to the molar ratio of barium:lead equal to 1:1.1, take 0.384 mol (75.8g) of analytically pure barium carbonate and fully grind and mix it with the spent positive electrode active material;

[0023] (3) Put the mixture obtained in step (2) at 9...

Embodiment 2

[0027] A method for recycling barium cuprate prepared by using waste positive electrode active material, comprising the following steps:

[0028] (1) Determination of the lead content of the spent cathode active material: According to the national standard method, the lead dioxide content in the spent cathode active material is measured, and the balance is calculated as lead monoxide, and the lead content of the spent cathode active material is calculated;

[0029] Waste positive electrode active material 100g, lead dioxide accounts for 90%, aluminum oxide accounts for 10%,

[0030] Then the total lead content in the spent positive electrode active material is:

[0031] 100×90%÷239.2+100×(1-90%)÷223.2=0.421 mol

[0032] (2) According to the molar ratio of barium:lead equal to 1:1, take 0.421 mol (ie 83.1g) of analytically pure barium carbonate and fully grind and mix it with waste lead powder;

[0033] (3) Put the mixture obtained in step (2) at 1100°C and react for 1 hour i...

Embodiment 3

[0037] A method for recycling barium cuprate prepared by using waste positive electrode active material, comprising the following steps:

[0038] (1) Determination of the lead content of the spent cathode active material: According to the national standard method, the lead dioxide content in the spent cathode active material is measured, and the balance is calculated as lead monoxide, and the lead content of the spent cathode active material is calculated;

[0039] Waste positive electrode active material 100g, lead dioxide accounts for 90%, aluminum oxide accounts for 10%,

[0040] Then the total lead content in the spent positive electrode active material is:

[0041] 100×90%÷239.2+100×(1-90%)÷223.2=0.421 mol

[0042] (2) According to the molar ratio of barium:lead equal to 1:1.5, take 0.281 mol (ie 55.4g) of analytically pure barium carbonate and fully grind and mix it with waste lead powder;

[0043] (3) Put the mixture obtained in step (2) at 850°C and react for 3 hours...

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Abstract

The invention discloses a method for preparing and reusing barium plumbate from waste positive active substances. The method comprises the following steps: (1) measuring the oxidation degree of the waste positive active substances, and calculating the lead content in the waste positive active substances; (2) fully grinding and mixing barium carbonate and the waste positive active substances in proportion; (3) reacting the obtained mixture at a certain temperature in air atmosphere to obtain a black barium plumbate product; (4) grinding the obtained barium plumbate product, sieving the ground barium plumbate by a technology, and then adding the sieved barium plumbate to lead powder for preparing positive lead plaster in proportion for reuse. According to the method, the waste positive active substances generated in a lead-acid battery production process are transformed to prepare the barium plumbate which is then reused in the lead-acid battery production, the cost is saved, the pollution is reduced, the waste is changed into valuable substances, and the progress of lead-acid battery recycling technology is promoted.

Description

technical field [0001] The invention relates to the field of lead-acid storage battery production, in particular to a method for preparing lead-acid barium by using waste positive electrode active materials for recycling. Background technique [0002] During the production process of lead-acid batteries, a certain amount of scrapped positive plates will be produced, such as plate waste such as perforation and tab damage. The active material of the cooked positive plate is mainly composed of lead dioxide and a small amount of lead monoxide. At present, the processing of scrapped cooked positive plates mainly adopts grinding into powder as positive active material additives; or recycling by smelting technology. As a positive active material additive, it mainly plays a role in promoting the formation of the plate, has no obvious impact on the performance of the battery, and the amount of addition is limited; while the cost of smelting and recycling is high, and it is prone to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62
CPCY02E60/10
Inventor 陈飞张慧赵冬冬马换玉刘松方明学杨惠强
Owner TIANNENG GRP JIANGSU TECH