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Method for preparing tetrabasic lead sulfate from waste batteries and application of tetrabasic lead sulfate

A four-basic lead sulfate and waste battery technology, which is applied in the direction of lead sulfate, battery recycling, recycling technology, etc., can solve the problems of polluting the environment and low economic benefits of waste battery recycling, and achieves simple operation, low cost, and huge economy benefit effect

Active Publication Date: 2013-04-03
SHENZHEN CENT POWER TECH
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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a method for preparing tetrabasic lead sulfate from waste batteries, which solves the technical problems of low economic benefits and serious environmental pollution in the prior art of waste battery recycling

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  • Method for preparing tetrabasic lead sulfate from waste batteries and application of tetrabasic lead sulfate

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] see figure 1 , figure 1 Show the embodiment of the present invention to prepare tetrabasic lead sulfate method flowchart from waste battery, comprise the steps:

[0017] Step S01, processing waste battery lead paste

[0018] Drying and grinding the waste battery lead paste to obtain the waste battery lead paste after grinding;

[0019] Step S02, preparing lead citrate or lead oxalate, lead sulfate mixture

[0020] Adding the ground waste battery lead paste to the citric acid or oxalic acid solution containing hydrogen peroxide, separating the solid and liquid after the reaction, and coll...

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Abstract

The invention is applicable to the field of waste treatment technologies and provides a method for preparing tetrabasic lead sulfate from waste batteries and the application of the prepared tetrabasic lead sulfate in batteries. The method comprises the steps of processing lead plaster of the waste batteries, preparing a lead citrate or lead oxalate and lead sulfate mixture, determining the content of lead oxalate and the content of the lead citrate or lead oxalate in filter residue, preparing the tetrabasic lead sulfate, and the like. According to the method for preparing the tetrabasic lead sulfate from the waste batteries and the application of the tetrabasic lead sulfate, the lead plaster is recovered from the waste batteries and used for preparing the tetrabasic lead sulfate, so that the battery recovery processing has a great economic benefit, and substances polluting the environment are not generated, thereby being environment-friendly; and the method is simple in operation and low in cost, thereby being very applicable to industrialized production.

Description

technical field [0001] The invention belongs to the technical field of waste treatment, in particular to a method for preparing tetrabasic lead sulfate from waste batteries and the application of the prepared tetrabasic lead sulfate in batteries. Background technique [0002] Tetrabasic lead sulfate (hereinafter referred to as 4BS) exists as an intermediate in the positive electrode, which can avoid the early decay of the capacity of the lead-acid battery. At present, the 4BS content in the lead paste is usually increased by increasing the paste or curing temperature. During the battery formation process, 4BS will undergo oxidation reaction and be converted into a large amount of fine-grained PbO. 2 , even into porous PbO 2 Fine-grain aggregates. This aggregate is similar to the original form of 4BS in terms of overall morphology. The PbO obtained by this process 2 The structural strength is stronger than that of PbO transformed from 3BS 2 Much larger, the mechanical str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54C01G21/20
CPCY02W30/84
Inventor 张华农
Owner SHENZHEN CENT POWER TECH
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