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Method for recovering lead oxide from waste lead-acid storage battery

A technology of lead-acid battery and recovery method, which is applied in the direction of lead monoxide and lead oxide, which can solve the problems of long reaction time, complicated process, and low product purity, and achieve short reaction time, low energy consumption, and short process flow Effect

Inactive Publication Date: 2019-08-16
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

From the process of recovering lead oxide from lead-acid batteries, it can be seen that the problems of unavoidable reagent volatilization, complicated process, long reaction time and low product purity (some carbonate intermediate products) still exist.

Method used

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  • Method for recovering lead oxide from waste lead-acid storage battery
  • Method for recovering lead oxide from waste lead-acid storage battery
  • Method for recovering lead oxide from waste lead-acid storage battery

Examples

Experimental program
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Effect test

Embodiment 1

[0038] 20g of PbCO that has been sieved through a 400-mesh sieve will be reclaimed from waste lead-acid batteries 3 Put the powder into the vibrating sieve; then heat the furnace to 400°C and keep the furnace temperature stable; then start feeding, the material will fall from the top of the vertical tube and react in the vertical tube. After the flash thermal decomposition reaction is complete, remove the product. Finally, XRD analysis is carried out to determine the product phase. The first container is filled with water to absorb the tiny dust particles produced by flash thermal decomposition, and the second container is filled with sodium hydroxide solution to absorb carbon dioxide produced by flash thermal decomposition. . The results show that the product is all red α-PbO, such as image 3 and Figure 4 shown, where image 3 It is the physical photo of α-PbO, Figure 4It is the XRD pattern of α-PbO. After detection, the quality of the obtained lead oxide is 19.8g, an...

Embodiment 2

[0040] 20g of PbCO that has been sieved through a 400-mesh sieve will be reclaimed from waste lead-acid batteries 3 Put the powder into the vibrating sieve; then heat the furnace to 550°C and keep the furnace temperature stable; then start feeding, the material will fall from the top of the vertical tube and react in the vertical tube. After the flash thermal decomposition reaction is complete, remove the product. Finally, XRD analysis is carried out to determine the product phase. The first container is filled with water to absorb the tiny dust particles produced by flash thermal decomposition, and the second container is filled with sodium hydroxide solution to absorb carbon dioxide produced by flash thermal decomposition. . The results show that the product is all yellow β-PbO, such as Figure 5 and Figure 6 shown, where Figure 5 It is the physical photo of β-PbO, Figure 6 It is the XRD spectrum pattern of β-PbO, after detection, the quality of the obtained lead oxi...

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Abstract

The invention provides a method for recovering lead oxide from a waste lead-acid storage battery, and belongs to the technical field of clean recovery and lead oxide recycling of the waste lead-acid storage battery. The method comprises the following steps: recycling lead carbonate from the waste lead-acid storage battery, and crushing the lead carbonate to obtain lead carbonate powder; and carrying out flash thermal decomposition treatment on the lead carbonate powder to obtain lead oxide. According to the method, lead carbonate recovered from the waste lead-acid storage battery is used as araw material, and lead oxide is obtained by adopting a flash thermal decomposition method at a proper temperature. The method has the outstanding advantages of short reaction time, short process flow,no pollution, low energy consumption and the like, and green cyclic utilization of the waste lead-acid storage battery is realized.

Description

technical field [0001] The invention relates to the technical field of clean recovery and lead oxide recycling of waste lead-acid batteries, in particular to a method for recycling lead oxide from waste lead-acid batteries. Background technique [0002] Lead-acid batteries have the advantages of good safety performance, stable electrochemical performance, and low production cost. Therefore, lead-acid batteries have been widely used in the fields of automobile industry, telecommunications industry, new energy industry, etc., making the lead-acid battery industry show a trend of vigorous development. It is undeniable that the generation of a large number of waste lead-acid batteries is inevitable. Once it cannot be treated effectively, it will cause harm to human beings and the environment. Therefore, it is imminent to carry out the recycling of waste lead-acid batteries. [0003] From another point of view, waste lead-acid batteries are composed of a large amount of lead a...

Claims

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Application Information

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IPC IPC(8): C01G21/06
CPCC01G21/06C01P2002/72C01P2004/01
Inventor 田阳雍波杨斌徐宝强刘大春陈秀敏邓勇王飞曲涛李一夫蒋文龙
Owner KUNMING UNIV OF SCI & TECH
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