Desulfurization and transformation method for waste lead accumulator regenerative lead

A waste lead-acid battery, desulfurization conversion technology, applied in the chemical industry, can solve the problems of complex process and high cost of waste lead-acid battery

Inactive Publication Date: 2007-11-28
上海飞轮有色冶炼厂
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  • Abstract
  • Description
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Problems solved by technology

[0004] The object of the present invention is to provide a desulfurization conversion method for regenerated lead in waste lead storage batteries. The desulfurization conversion method for regenerated lead in waste lead storage batteries needs to so...

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  • Desulfurization and transformation method for waste lead accumulator regenerative lead

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Embodiment Construction

[0013] As shown in Fig. 1, a kind of desulfurization conversion method of the regenerated lead of waste lead storage battery of the present invention comprises a process that waste lead storage battery is crushed, and the lead mud slurry material produced after crushing carries out liquid-solid separation to produce wet lead mud, wet lead Put the mud into a desulfurization tank, put the desulfurizing agent sodium carbonate in the desulfurization tank, and stir it. After fully reacting, let it stand for liquid-solid separation to obtain precipitate lead carbonate and liquid sodium sulfate. Liquid sulfuric acid Sodium is put into a reactor, barium carbonate is added in the reactor, stirred, after fully reacting, stand still, carry out liquid-solid separation, obtain precipitate barium sulfate and liquid sodium carbonate, described liquid sodium carbonate is sent into desulfurization In the tank, it is recycled as a desulfurizer.

[0014] Further, in the first desulfurization pro...

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Abstract

A kind of desulfitation transformation method to regenerate Pb with waste chloride accumulator, it contains a procedure to break waste chloride accumulator, the liquid and the solid in the Pb mud fluid after breaking will be separated, and wet lead slime can be gained. The wet lead slime will be put into a desulfurizer. And sodium carbonate will be also added as desulfurating agent, then they will be fully agitated, they will fully react. The liquid and solid will be separated after stewing, The sediment lead carbonate and liquid sodium sulfate can be gained, the later will be put into a reactor, and barium carbonate will also be put in, then they will be agitated, and reacted fully, they will be stew, and then the liquid and solid of them will be separated, the sediment barium sulfate and liquid sodium carbonate can be gained, and the later will be delivered into the desulfurizer to recycle as desulfurating agent. This patent translates the reaction between sodium sulfate and barium carbonate in the remained liquid, recycle the desulfurater sodium carbonate. It not only resolves the problem how to deal with the sodium sulfate in the desulfitation transformation technology, but also resolves the regeneration and the recycle of desulfurater sodium carbonate.

Description

Technical field: [0001] The invention belongs to the field of chemical industry, in particular to a process for recovering lead, in particular to a desulfurization conversion method for waste lead storage batteries. Background technique: [0002] 80% of the recycled lead raw materials come from waste lead batteries, and waste lead batteries are classified and sorted into lead grids, lead mud, PVC shells, plastics, and waste acids through the MA crushing and sorting system. There is a certain amount of lead sulfate in the lead sludge. To completely restore the lead in the lead sulfate, the temperature needs to be above 1200°C. Not only will it consume a lot of energy, but also a large amount of lead will be evaporated into the furnace gas, and the dust will be collected and smelted repeatedly. , Repeated waste of energy, the investment, operation, maintenance and energy costs of these environmental protection equipment for handling these lead-containing furnace gases are very...

Claims

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Application Information

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IPC IPC(8): C22B13/00C22B3/00C01D7/12
CPCY02P10/20
Inventor 沈嘉麟杨波顾秀峰吴建华张忠民韩鹰陈正明黄惠民朱卫敏
Owner 上海飞轮有色冶炼厂
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