Preparation method of lead compound nanopowder used in the recycling and manufacture of lead-acid batteries

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

Active Publication Date: 2017-04-19
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 (authorized 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.

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  • Preparation method of lead compound nanopowder used in the recycling and manufacture of lead-acid batteries

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Effect test

Embodiment 1

[0035] The preparation method of the lead compound nano-powder applied to the recovery and manufacture of lead-acid batteries of the present invention, its flow diagram, as shown in the accompanying drawings of the description, its steps include:

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

[0037] (2) Add 0.7kg (20mol) NH 4 OH until no more precipitation occurs;

[0038] (3) Filtrate the obtained precipitate, dry it to remove water, and conduct thermal decomposition at a temperature lower than 800°C for 1 to 60 minutes, observe through transmission electron microscope (TEM), X-ray diffraction (XRD) and X-ray photoelectron XPS analysis shows that the finally obtained powder is Pb oxide nanopowder with a particle size between 0.1-300nm.

Embodiment 2

[0040] The preparation method of the lead compound nano-powder applied to lead-acid storage battery recovery and manufacture of the present invention, its steps include:

[0041] (1) Dissolve 0.1kg lead acetate (0.31mol) in 0.9kg water, add 0.0031kg (0.000031mol) surfactant PVP (molecular weight is 100000) to aqueous solution simultaneously, stir; Wherein, can be supplemented with ultrasonic in this step;

[0042] (2) Add 10.85kg (310mol) NH 4 0H until no more precipitation occurs;

[0043] (3) Filtrate the obtained precipitate, dry it to remove water, and conduct thermal decomposition at a temperature lower than 800°C for 1 to 60 minutes, observe through transmission electron microscope (TEM), X-ray diffraction (XRD) and X-ray photoelectron XPS analysis shows that the finally obtained powder is Pb oxide nanopowder with a particle size between 0.1-300nm.

Embodiment 3

[0045] The preparation method of the lead compound nano-powder applied to lead-acid storage battery recovery and manufacture of the present invention, its steps include:

[0046] (1) Mix the lead salt mixture of 0.1kg (0.1mol) lead citrate and 0.1kg (0.33mol) lead sulfate with 86kg30% (mass concentration) acetic acid (430mol) solution, and react at room temperature for 10min while stirring , so that the lead salt is dissolved in the solution; wherein, in this step, ultrasound can be supplemented;

[0047] (2) Add 15.05kg (430mol) NH 4 OH until no more precipitation occurs;

[0048] (3) All the precipitates obtained are filtered, dried to remove water, and thermally decomposed at a temperature lower than 800 ° C for 1 to 60 minutes, observed by transmission electron microscope (TEM), X-ray diffraction (XRD) and X-ray diffraction (XRD) X-ray photoelectron spectroscopy (XPS) analysis shows that the finally obtained powder is Pb oxide nanopowder with a particle size between 0.1-...

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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 a lead (Pb) compound nano powder, in particular to a method for preparing the lead compound nano powder used in the recovery and manufacture of lead-acid batteries. Background technique [0002] Compared with other commercialized batteries, lead-acid batteries show good cycle characteristics. This is because lead, the main raw material for batteries, has been better recycled. The early methods of lead recovery mainly include earth-fire method, that is, using reverberatory furnace, blast furnace, etc. to smelt the lead paste of waste batteries. PbSO in general lead paste 4 Its content is more than 50%, its melting point is high, and the temperature of complete decomposition is above 1000°C [Yang Jiakuan. Research progress of waste lead-acid battery lead paste recycling technology [J]. Modern Chemical Industry, 2009, 29 (3)]. In order to overcome the high energy consumption of pyrotechnics, high pollution em...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G21/02C01G21/06H01M10/54B82Y40/00
CPCY02W30/84
Inventor 杨春晓徐志国
Owner 杨春晓
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