A method for recovering lead from lead paste material of waste lead storage battery

A lead storage battery, lead paste technology, applied in electrodes, electrolysis components, electrolysis process and other directions, can solve the problems of complex production process, limited application scope, low recovery rate, etc., and achieve simple production process, low energy consumption, and recovery rate. high effect

Active Publication Date: 2021-04-06
赵坤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve the existing technical problems of complex production process, high energy consumption, high cost, low recovery rate and limited scope of application when recovering lead from the lead paste material of waste lead-acid batteries, and to provide a Method for recovering lead from lead paste material of lead storage battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Example 1 (maintenance-free silicone battery)

[0060] The method for reclaiming lead from the lead paste material of waste lead storage battery of the present invention comprises the steps:

[0061] 1) Disassembly process

[0062] Dismantling lead paste from waste lead-acid batteries and air-drying to obtain lead paste dry base;

[0063] 2) Conversion process (wet conversion process)

[0064] Prepare 4.2L of sulfuric acid solution with a mass concentration of 90g / L in a 5L reaction tank as the conversion solution; raise the temperature of the conversion solution to 50°C, add 700g of lead paste dry basis, the liquid-solid ratio of sulfuric acid to lead paste is 6:1, and then Add 3.4g of solid sodium hydroxide (industrial grade 99%) to adjust the base to pH=8, then add 129g of sodium carbonate, react after 3 hours, filter to obtain the conversion residue and filtrate, the purpose of adding sodium carbonate is the purpose of the conversion process , is in order to comp...

Embodiment 2

[0076] Example 2 (maintenance-free silicone battery)

[0077] The method for reclaiming lead from the lead paste material of waste lead storage battery of the present invention comprises the steps:

[0078] 1) Disassembly process

[0079] Dismantling lead paste from waste lead-acid batteries and air-drying to obtain lead paste dry base;

[0080] 2) Conversion process (wet conversion process)

[0081] Prepare 4.2L of sulfuric acid solution with a mass concentration of 50g / L in a 5L reaction tank as the conversion solution; raise the temperature of the conversion solution to 60°C, add 4200g of lead paste dry basis, the liquid-solid ratio of sulfuric acid to lead paste is 1:1, and then Add 12.3g of solid sodium hydroxide (industrial grade 99%) to adjust the base to pH=10, then add 121g of sodium carbonate, react for 2 hours, and filter to obtain the conversion residue and filtrate. The purpose of adding sodium carbonate is the purpose of the conversion process , in order to co...

Embodiment 3

[0088] Example 3 (maintenance-free silicone battery)

[0089] The method for reclaiming lead from the lead paste material of waste lead storage battery of the present invention comprises the steps:

[0090] 1) Disassembly process

[0091] Dismantling lead paste from waste lead-acid batteries and air-drying to obtain lead paste dry base;

[0092] 2) Conversion process (wet conversion process)

[0093] Prepare 3.3L of sulfuric acid solution with a mass concentration of 30g / L in a 5L reaction tank as the transformation solution; raise the temperature of the transformation solution to 50°C, add 554g of lead paste dry basis, the liquid-solid ratio of sulfuric acid to lead paste is 6:1, and then Add 2.5g of solid sodium hydroxide (industrial grade 99%) to adjust the base to pH=8, then add 59.5g of sodium carbonate, react for 3 hours, and filter to obtain the conversion residue and filtrate. The purpose of adding sodium carbonate is the conversion process. Purpose, is in order tha...

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Abstract

The present invention relates to the recovery technology of waste lead storage batteries, in particular to a method for recovering lead from lead paste materials of waste lead storage batteries by wet conversion desulfurization-cationic membrane electrowinning method, which is applicable to the recovery of lead from various lead storage batteries process. The purpose of the present invention is to solve the existing technical problems of complex production process, high energy consumption, high cost, low recovery rate and limited scope of application when recovering lead from the lead paste material of waste lead-acid batteries, and to provide a A method for recovering lead from lead paste materials of lead storage batteries. The method comprises the following steps: 1) dismantling process; 2) conversion process; 3) leaching process; 4) electrowinning process; 5) melting and casting process.

Description

technical field [0001] The present invention relates to the recovery technology of waste lead-acid batteries, in particular to a method for recovering lead from lead paste materials of waste lead-acid batteries by wet conversion desulfurization-cationic membrane electrowinning method, which is applicable to lead recovery of various lead-containing batteries process. Background technique [0002] With the wide application of lead-acid batteries in automobiles and mobile communication equipment (taking 2016 as an example, the total output of refined lead in the world in 2016 was 111.49 million tons, of which nearly 84.73 million tons were used to manufacture lead-acid batteries, accounting for 20% of the output of refined lead. more than 76%), and the corresponding waste lead-acid storage capacity is also very huge; moreover, the recycling cost and energy consumption of waste lead-acid batteries are respectively reduced by 38% and 33% compared with mining lead mines, therefore...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B13/00C25C1/18C25C7/02
CPCC22B7/006C22B7/007C22B13/045C25C1/18C25C7/02Y02P10/20
Inventor 赵坤
Owner 赵坤
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