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Closed circulating and recycling method of waste lead-acid accumulator

A lead-acid battery and closed-cycle technology, which is applied in the direction of improving process efficiency, can solve problems such as pollution and low recycling efficiency, and achieve the effects of easy and simple operation, high degree of automation, and increased recycling value

Active Publication Date: 2012-07-04
阳煤集团山西吉天利科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low recycling efficiency and serious pollution in the recycling of existing waste lead-acid batteries due to backward processing equipment, technology, production scale, etc., so the present invention provides a waste lead-acid battery Closed Loop Recycling Methods

Method used

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  • Closed circulating and recycling method of waste lead-acid accumulator
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A production method for closed-cycle recycling of waste lead-acid batteries, comprising the steps of:

[0046] (1) Primary crushing: waste lead-acid batteries are picked up by the claws and sent to the upper hopper, and then sent to the primary crushing hammer through the feeding conveyor for primary crushing, so that the size of the crushed mixture is 75mm, and the primary crushed The mixed material falls on the first vibrating screen for cleaning and sorting, and the lead sludge and acid produced in the process are sent to the storage tank;

[0047] (2) Magnetic separation: transport the crushed mixture on the first vibrating screen to the conveyor belt equipped with an electromagnetic separator, which will separate the ferromagnetic metal in the mixture;

[0048] (3) Secondary crushing: The mixture separated by the electromagnetic separator is sent to the secondary crushing hammer for secondary crushing, so that the size of the crushed mixture is 27mm, and the second...

Embodiment 2

[0060] A production method for closed-cycle recycling of waste lead-acid batteries, comprising the steps of:

[0061] (1) Primary crushing: waste lead-acid batteries are sent to the hopper through the claws, and then sent to the primary crushing hammer through the feeding conveyor for primary crushing, so that the size of the crushed mixture is 70mm, and the primary crushed The mixed material falls on the first vibrating screen for cleaning and sorting, and the lead sludge and acid produced in the process are sent to the storage tank;

[0062] (2) Magnetic separation: transport the crushed mixture on the first vibrating screen to the conveyor belt equipped with an electromagnetic separator, which will separate the ferromagnetic metal in the mixture;

[0063] (3) Secondary crushing: The mixture separated by the electromagnetic separator is sent to the secondary crushing hammer for secondary crushing, so that the size of the crushed mixture is 30mm, and the secondary crushed mix...

Embodiment 3

[0074] A production method for closed-cycle recycling of waste lead-acid batteries, comprising the steps of:

[0075] (1) Primary crushing: waste lead-acid batteries are picked up by the claws and sent to the upper hopper, and then sent to the primary crushing hammer through the feeding conveyor for primary crushing, so that the size of the crushed mixture is 73mm, and the primary crushed The mixed material falls on the first vibrating screen for cleaning and sorting, and the lead sludge and acid produced in the process are sent to the storage tank;

[0076] (2) Magnetic separation: transport the crushed mixture on the first vibrating screen to the conveyor belt equipped with an electromagnetic separator, which will separate the ferromagnetic metal in the mixture;

[0077] (3) Secondary crushing: The mixture separated by the electromagnetic separator is sent to the secondary crushing hammer for secondary crushing, so that the size of the crushed mixture is 25mm, and the second...

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Abstract

The invention relates to a closed circulating and recycling method of a waste lead-acid accumulator, and is used for solving the problem of low recovery efficiency, severe pollution and the like in the existing recycling aspect of the waste lead-acid accumulator due to lagging processing equipment, technical process production scale and the like. The method comprises the steps of: separating materials in the waste accumulator by crushing, oscillating screen sorting, magnetic separation, hydraulic sorting, vortex sorting and other methods, then carrying out desulfurization and pressure filtration treatment on obtained lead mud, then sequentially conveying obtained dried desulfurized lead mud and lead grid to a convertor and a refining kettle for smelting and refining, finally processing the refined molten lead into lead powder, lead grid or lead ingot, and storing for later use or selling as a finished product. The method has the advantages that the mechanical automation degree is high, pollution-free measures are adopted, the materials are thoroughly separated, the recovery rates of the materials are greatly improved, the total recovery rate of lead achieves 98%, the recovery rateof plastic achieves 95%, and the comprehensive utilization rate of resources achieves 98%.

Description

technical field [0001] The invention relates to the technical field of waste recovery and recycling, in particular to a closed-cycle recycling method for waste lead-acid batteries. Background technique [0002] At present, the commonly used lead-acid battery recycling and disposal methods do not seem to play a fundamental role in the prevention of lead metal pollution. Lead metal pollutes the environment, causes children's blood lead, and damages people's health from time to time. my country's secondary production has increased from 146,000 tons in 1996 to 1.851 million tons in 2010, and the proportion of secondary lead production in refined lead consumption has risen from 14.3% to 36.1%. Most of the secondary lead smelting manufacturers in my country simply dismantle waste lead-acid batteries by hand. After removing the casing and pouring acid solution, etc., they usually use small reverberatory furnaces and earthen furnaces, and a few manufacturers use water jacket furnac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B13/00
CPCY02P10/20
Inventor 梁福明王洋
Owner 阳煤集团山西吉天利科技有限公司
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