Method for synthesizing high-activity superfine lead oxide powder by waste lead paste

A technology of waste lead paste and high activity, which is applied in the direction of lead monoxide, lead oxide, and lead-acid batteries. It can solve the problems of difficult particle size refinement, easy damage to the crystal lattice, and low activity, and achieve good cycle performance and low price. Effect

Inactive Publication Date: 2017-09-05
HUBEI GREENHOME MATERIALS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for synthesizing high-activity ultra-fine lead oxide powder with waste lead paste, so as to solve the technical problems such as low activity of the existing products, difficulty in refining the particle size, and easy damage to the crystal lattice.

Method used

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Examples

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Effect test

Embodiment 1

[0020] A method for synthesizing highly active ultrafine lead oxide powder with waste lead paste, comprising the following processing steps:

[0021] (1) Collect the waste lead paste produced during the dismantling of waste lead-acid batteries, put the waste lead paste into the desulfurization reaction kettle, and pass the desulfurization agent NH 4 HCO 3 +NH 3 . h 2 O, where desulfurizer and PbSO in waste lead paste 4 The molar ratio of the mixture is 1.3, the reaction liquid-solid ratio is 5:1, mechanically stirred at normal temperature for 35min, after the reaction is complete, the mixture in the reactor is transported to the filter press for pressure filtration, and the desulfurization lead paste and filtrate are obtained by separation;

[0022] (2) Put the desulfurized lead paste into the reduction leaching reactor, and pass CH 3 COOH and H 2 o 2 , where CH 3 COOH and H 2 o 2 The molar ratio of CH is 8:1, CH 3 The molar ratio of COOH to the total lead content i...

Embodiment 2

[0026] A method for synthesizing highly active ultrafine lead oxide powder with waste lead paste, comprising the following processing steps:

[0027] (1) Collect the waste lead paste produced during the dismantling of waste lead-acid batteries, put the waste lead paste into the desulfurization reaction kettle, and pass the desulfurization agent NH 4 HCO 3 +NH 3 . h 2 O, where desulfurizer and PbSO in waste lead paste 4 The molar ratio of the mixture is 1.4, the reaction liquid-solid ratio is 5:1, mechanically stirred at room temperature for 30 minutes, after the reaction is complete, the mixture in the reactor is transported to the filter press for pressure filtration, and the desulfurization lead paste and filtrate are obtained by separation;

[0028] (2) Put the desulfurized lead paste into the reduction leaching reactor, and pass CH 3 COOH and H 2 o 2 , where CH 3 COOH and H 2 o 2 The molar ratio of CH is 8:1, CH 3 The molar ratio of COOH to the total lead conten...

Embodiment 3

[0033] A method for synthesizing highly active ultrafine lead oxide powder with waste lead paste, comprising the following processing steps:

[0034] (1) Collect the waste lead paste produced during the dismantling of waste lead-acid batteries, put the waste lead paste into the desulfurization reaction kettle, and pass the desulfurization agent NH 4 HCO 3 +NH 3 . h 2 O, where desulfurizer and PbSO in waste lead paste 4 The molar ratio of the mixture is 1.5, the reaction liquid-solid ratio is 5:1, mechanically stirred at normal temperature for 20 minutes, after the reaction is complete, the mixture in the reactor is transported to the filter press for pressure filtration, and the desulfurization lead paste and filtrate are obtained by separation;

[0035] (2) Put the desulfurized lead paste into the reduction leaching reactor, and pass CH 3 COOH and H 2 o 2 , where CH 3 COOH and H 2 o 2 The molar ratio of CH is 8:1, CH 3 The molar ratio of COOH to the total lead cont...

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Abstract

The invention discloses a method for synthesizing high-activity superfine lead oxide powder by waste lead paste. The method has the advantages that used desulfurizing agents are low in cost and easy to obtain and can be recycled, the method breaks a traditional desulfurizing-calcining process, a reduction leaching process is added in order to acquire high-activity superfine PbO (lead oxide powder), used reduction leaching agents are low in cost, corrosion of the reduction leaching agents for a kettle is smaller than that of commonly-used nitric acid, requirements for devices are not strict, and polyvinylpyrrolidone serving as surface active agents is added to synthesize high-activity superfine PbO, so that novel high-performance lead-acid battery products are prepared.

Description

technical field [0001] The invention belongs to the technical field of regenerated lead, and mainly relates to the recovery of waste lead-acid storage battery lead paste, specifically a method for synthesizing highly active ultrafine lead oxide powder with waste lead paste. Background technique [0002] Lead remains a globally common neurotoxin capable of causing severe, and in some cases irreversible, neurological damage. Although China's leaded gasoline was phased out in 2000, the rate of lead poisoning among children continues to increase. This is mainly due to the rapid development of China's lead-acid battery industry, which produces a large number of waste lead-acid batteries. Unreasonable treatment leads to pollution in water and air. Lead content seriously exceeds the standard, causing lead poisoning. Therefore, it is very necessary to recycle waste lead-acid batteries reasonably. [0003] Waste lead-acid batteries are usually composed of the following four parts: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54H01M4/56H01M10/12C01G21/06
CPCC01G21/06C01P2004/62H01M4/56H01M10/12H01M10/54Y02E60/10Y02W30/84Y02P70/50
Inventor 刘芳芳杨华
Owner HUBEI GREENHOME MATERIALS TECH INC
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