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Waste lead-acid battery lead plaster molten bath smelting treatment method

A waste lead-acid battery, molten pool smelting technology, applied in chemical instruments and methods, inorganic chemistry, chemical industry and other directions, can solve problems such as hidden dangers, achieve high efficiency, solve environmental pollution, and save investment.

Active Publication Date: 2017-08-22
ANHUI NARADA RENEWABLE RESOURCE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are huge hidden dangers in the desulfurized lead paste treatment in the later stage.

Method used

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  • Waste lead-acid battery lead plaster molten bath smelting treatment method

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Embodiment 1

[0022] like figure 1 As shown, the oxygen side-blowing furnace is used to process waste lead-acid batteries, which is completed in two stages. One furnace (less than 150,000 tons / year for waste lead-acid batteries) can be used for periodic production operations, or two furnaces, one for oxidation and the other for continuous production operations (for processing more than 150,000 tons / year of lead-acid batteries) .

[0023] The first stage: desulfurization and smelting. Firstly, the waste battery lead plaster mud and limestone (flux) that have been decomposed and separated, and dehydrated by pressure filtration are automatically batched, and then transported by a belt conveyor and continuously fed from the top of the furnace. In the furnace, granular coal (coke) is added to the furnace at the same time, and oxygen-enriched air is sent into the furnace through the tuyere at the lower part of the furnace.

[0024] PbSO 4 =PbO+SO 3 (1)

[0025] SO 3 = SO 2 +1 / 2O 2 (2) ...

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Abstract

The invention discloses a waste lead-acid battery lead plaster molten bath smelting treatment method. Waste lead-acid battery lead plaster is treated by adopting an oxygen-enrichment molten bath smelting technology which replaces an existing production technology. The method is suitable for industrialized and large industrial production, and has the characteristics of being small in investment, high in efficiency and environmentally friendly and saving energy. Produced lead is returned to storage battery manufacturing after being subjected to pyrogenic or electrolytic refining, and circular economy is formed. Sulfuric acid can be prepared from produced high-concentration sulfur dioxide through a standard acid preparation process, the problem that environmental pollution is caused by low-concentration sulfur dioxide can be effectively solved, the lead content in produced slag does not exceed 2%, and the slag contains no ingredient which is dissolved in water and affects environment and does not need to be subjected to hazardous waste treatment.

Description

technical field [0001] The invention relates to the technical field of waste lead-acid battery treatment, in particular to a method for smelting a waste lead-acid battery lead paste melting pool. Background technique [0002] After more than 100 years of development and improvement, lead-acid batteries have become a chemical power source widely used in the world. It is also the battery with the largest output and widest application in the world. It is an indispensable product in social production and operation activities and human beings. . [0003] At present, there are more than 300 enterprises engaged in the production of secondary lead in my country. The large number, small scale, high energy consumption, heavy pollution, low recovery rate, low degree of mechanization and intensification make the whole industry in a small, chaotic and scattered state. [0004] In recent years, the introduction of foreign and domestic independent research and development technology has g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B13/02C01B17/74
CPCC01B17/74C22B13/025Y02P20/10Y02P20/129
Inventor 蔺公敏朱保义刘喆吴国庆
Owner ANHUI NARADA RENEWABLE RESOURCE TECH CO LTD
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