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Lead compound nano-powder preparation method for recovery and manufacture of lead-acid battery

A lead-acid battery and lead compound technology is applied in the field of preparation of lead compound nano-powders, and can solve the problems of unsuitability for lead-acid battery recycling and manufacturing process, inconsistent manufacturing process requirements, difficult commercial production and application, and the like, Achieve the effect of shortening the production cycle, simplifying the process and related logistics steps, and reducing production costs

Active Publication Date: 2012-09-26
杨春晓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent No. is 02100264.9 (authorization announcement number CN 1171797C) invention patent also discloses a kind of method of synthesizing α, β type lead dioxide nanocrystal and trilead tetraoxide nanocrystal, but the prepared Pb oxide is different from existing Mature lead-acid battery manufacturing process requirements do not meet
[0005] In the above method for preparing Pb oxide powder, either the process cost is too high, or it is not suitable for the recovery and manufacturing process of the existing lead-acid battery, and it is difficult to be applied in commercial production.

Method used

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  • Lead compound nano-powder preparation method for recovery and manufacture of lead-acid battery

Examples

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Effect test

Embodiment 1

[0035] The method for preparing lead compound nano-powder used in lead-acid battery recycling and manufacturing of the present invention has a schematic flow chart, as shown in the accompanying drawings in the specification, and its steps include:

[0036] (1) Mix 0.1kg (0.33mol) of lead sulfate and 0.9kg of 30% (mass concentration) acetic acid (5mol) solution, and react for 10 minutes at room temperature while stirring to dissolve lead sulfate in the solution; The steps can be supplemented by ultrasound;

[0037] (2) Add 0.7kg (20mol) NH to the new soluble lead salt solution 4 OH until precipitation no longer occurs;

[0038] (3) Filter the obtained precipitate, dry it to remove water, and heat and decompose it at a temperature lower than 800°C for 1-60 min. Observe by transmission electron microscope (TEM), X-ray diffraction (XRD) and X-ray photoelectron Energy spectrum (XPS) analysis shows that the final powder obtained is Pb oxide nanopowder with a particle size between 0.1 and ...

Embodiment 2

[0040] The method for preparing lead compound nano-powder applied to lead-acid battery recycling and manufacturing of the present invention includes:

[0041] (1) Dissolve 0.1kg of lead acetate (0.31mol) in 0.9kg of water, and add 0.0031kg (0.000031mol) of surfactant PVP (molecular weight 100,000) to the aqueous solution, and stir; wherein, this step can be supplemented by ultrasound;

[0042] (2) Add 10.85kg (310mol) NH to the new soluble lead salt solution 4 0H until precipitation no longer occurs;

[0043] (3) Filter the obtained precipitate, dry it to remove water, and heat and decompose it at a temperature lower than 800°C for 1-60 min. Observe by transmission electron microscope (TEM), X-ray diffraction (XRD) and X-ray photoelectron Energy spectrum (XPS) analysis shows that the final powder obtained is Pb oxide nanopowder with a particle size between 0.1 and 300 nm.

Embodiment 3

[0045] The method for preparing lead compound nano-powder applied to lead-acid battery recycling and manufacturing of the present invention includes:

[0046] (1) Mix the lead salt mixture of 0.1kg (0.1mol) lead citrate and 0.1kg (0.33mol) lead sulfate with 86kg 30% (mass concentration) acetic acid (430mol) solution, and react for 10min at room temperature, at the same time Stir to dissolve the lead salt in the solution; wherein, this step can be supplemented by ultrasound;

[0047] (2) Add 15.05kg (430mol) NH to the new soluble lead salt solution 4 OH until precipitation no longer occurs;

[0048] (3) Filter all the obtained precipitates, dry to remove water, and heat and decompose at a temperature lower than 800°C for 1-60 min. Observe through transmission electron microscope (TEM), X-ray diffraction (XRD) and X X-ray photoelectron spectroscopy (XPS) analysis shows that the finally obtained powder is Pb oxide nanopowder with a particle size between 0.1 and 300 nm.

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Abstract

The invention discloses a lead compound nano-powder preparation method for recovery and manufacture of lead-acid battery. The lead compound nano-powder preparation method comprises the following steps that 1, lead, a lead salt or waste lead-acid battery lead paste reacts with one or more organic or inorganic compounds to produce a soluble lead salt solution or a lead hydroxide solution; 2, one or more alkalis or caustic alkalis are added into the soluble lead salt solution, or a part or excess amount of H2CO3 or CO2, sulfuric acid, one or more organic acids or their salts are added into the lead hydroxide solution, and 3, lead oxide or lead hydroxide precipitates obtained by the step 2 are filtered and are subjected to drying and pyrolysis to form the lead compound nano-powder. The lead compound nano-powder preparation method realizes environmentally friendly recovery and production, has low energy consumption, greatly reduces a production cost, and shortens a production period. The lead compound nano-powder obtained by the lead compound nano-powder preparation method is conducive to improvement of technical product performances.

Description

Technical field [0001] The invention relates to the preparation of lead (Pb) compound nano powder, in particular to a preparation method of lead compound nano powder applied to lead-acid storage battery recovery and manufacture. Background technique [0002] Compared with other commercialized batteries, lead-acid batteries show good recycling characteristics. This is because lead metal, the main raw material of the battery, is well recycled. Early methods of recovering lead mainly include the earth fire method, which uses reverberatory furnaces and blast furnaces to smelt the lead paste of waste batteries. PbSO in general lead paste 4 Content>50%, its melting point is high, the temperature of complete decomposition is above 1000 ℃ [Yang Jiakuan. Research progress in lead paste recovery technology for waste lead-acid batteries[J]. Modern Engineering, 2009, 29(3)]. In order to overcome the high energy consumption and high pollution emission (large amount of SO 2 And metal vola...

Claims

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Application Information

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IPC IPC(8): C01G21/02C01G21/06H01M10/54B82Y40/00
CPCY02E60/12Y02W30/84
Inventor 杨春晓徐志国
Owner 杨春晓
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