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Waste lead-acid storage battery recycling process

A lead-acid battery, recycling technology, applied in the direction of lead-acid battery, battery recycling, waste collector recycling, etc., can solve the problems of no recycling of positive and negative electrode paste and other spare parts, poor atomic economy, high price, etc. , achieve the effect of shortening the processing time, good absorption effect and high recovery rate of waste acid

Inactive Publication Date: 2020-01-14
骆驼集团(安徽)再生资源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention only considered the recycling of positive and negative plates, and did not propose how to recycle positive and negative electrode paste and other spare parts
[0005] The Chinese patent application number 201610691120 discloses a method for recovering lead oxide by a full wet method, which can obtain high-purity lead oxide solids without high-temperature roasting, but a large amount of oxidant H is required in this process. 2 o 2 , high price, high consumption, and poor atom economy

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0032] A recycling process for waste lead-acid batteries, characterized in that it comprises the following steps:

[0033] Step S1, dismantling and sorting: dismantling the collected waste lead-acid batteries to obtain waste acid solution, lead paste, plastic and grids;

[0034] Step S2, waste acid treatment: filter the waste acid solution obtained in step S1 to remove slag, and then enter the acid production process system for the preparation of finished sulfuric acid;

[0035] Step S3, plastic treatment: put the sorted plastic into a stainless steel pulverizer for pulverization, disperse the pulverized plastic powder in an alcohol solvent, then add a coupling agent to it, and stir and react at 50°C for 6 hours, Obtain surface-modified plastics; then add surface-modified plastics and fluorosilicon materials into twin-screw extrusion for extrusion molding to obtain weather-resistant materials;

[0036] Step S4, grid treatment: after washing the sorted grid with a saturated so...

Embodiment 2

[0047] A recycling process for waste lead-acid batteries, characterized in that it comprises the following steps:

[0048] Step S1, dismantling and sorting: dismantling the collected waste lead-acid batteries to obtain waste acid solution, lead paste, plastic and grids;

[0049] Step S2, waste acid treatment: filter the waste acid solution obtained in step S1 to remove slag, and then enter the acid production process system for the preparation of finished sulfuric acid;

[0050] Step S3, plastic treatment: put the sorted plastic into a stainless steel pulverizer for pulverization, disperse the pulverized plastic powder in an alcohol solvent, add a coupling agent to it, and stir and react at 52°C for 6.5 hours, Obtain surface-modified plastics; then add surface-modified plastics and fluorosilicon materials into twin-screw extrusion for extrusion molding to obtain weather-resistant materials;

[0051] Step S4, grid treatment: after washing the sorted grid with a saturated sodiu...

Embodiment 3

[0062] A recycling process for waste lead-acid batteries, characterized in that it comprises the following steps:

[0063] Step S1, dismantling and sorting: dismantling the collected waste lead-acid batteries to obtain waste acid solution, lead paste, plastic and grids;

[0064] Step S2, waste acid treatment: filter the waste acid solution obtained in step S1 to remove slag, and then enter the acid production process system for the preparation of finished sulfuric acid;

[0065] Step S3, plastic treatment: put the sorted plastic into a stainless steel pulverizer for pulverization, disperse the pulverized plastic powder in an alcohol solvent, add a coupling agent to it, and stir and react at 55°C for 7 hours, Obtain surface-modified plastics; then add surface-modified plastics and fluorosilicon materials into twin-screw extrusion for extrusion molding to obtain weather-resistant materials;

[0066] Step S4, grid treatment: after washing the sorted grid with a saturated sodium ...

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Abstract

The invention discloses a waste lead storage battery recycling process which is characterized by comprising the following steps: S1, disassembling and sorting, S2, waste acid treating, S3, plastic treating, S4, grid treating, S5, lead plaster treating, and 6, electrolyzing. The waste lead storage battery recycling process disclosed by the invention is simple, convenient to operate, high in recovery efficiency and finished product percent of pass, and suitable for continuous large-scale treatment, and has relatively high market popularization and application value, economic value, social valueand ecological value; according to the process, the lead recovery rate can be effectively increased, no waste water, waste gas or waste residues are generated in the whole process, the recovery treatment process is clean and environmentally friendly, waste can be turned into wealth in the true sense, and resource recycling is achieved.

Description

technical field [0001] The invention relates to the technical field of battery recycling, in particular to a recycling process for waste lead storage batteries. Background technique [0002] The development of lead-acid batteries has a history of more than 100 years. As an important secondary power source, lead-acid batteries occupy an important market share. Waste lead-acid batteries are dangerous solid wastes. With the development of my country's automobile and communication industries, the amount of waste lead-acid batteries has also increased rapidly. According to statistics, in 2010, my country's annual production of waste lead-acid batteries has reached more than 110×104 tons. This figure has continued to grow in recent years. The scrapped lead-acid batteries mainly include waste sulfuric acid solution (concentration is generally 15-30% by weight), metal lead, lead paste, PVC separator and PP plastics. Among them, lead is highly toxic and sulfuric acid is highly corro...

Claims

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Application Information

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IPC IPC(8): H01M10/54H01M10/06C25C1/18
CPCC25C1/18H01M10/06H01M10/54Y02E60/10Y02W30/84
Inventor 贾磊曹睿蔡以辉王振飞王脐君
Owner 骆驼集团(安徽)再生资源有限公司