Scrap lead accumulator recycling method

A technology of waste lead storage battery and recycling method, which is applied in the direction of battery recycling, waste collector recycling, recycling technology, etc., can solve problems such as secondary pollution, low economic benefits, and large investment in equipment, and achieve significant economic benefits and social benefits Benefits, safe and convenient operating conditions, and the effect of lowering the reaction temperature

Inactive Publication Date: 2017-09-22
HEFEI SHANGQIANG ELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The recovery and treatment process of lead-acid batteries is not perfect, and it is easy to cause secondary pollution, which has become a key problem restricting its application
The reaction temperature of the current pyrolysis treatment of waste lead-acid batteries is generally above 1200°C, which consumes a lot of energy and produces a large amount of lead vapor, causing serious secondary pollution.
The wet treatment process is too long, the investment in equipment is large, the power consumption is high, the processing capacity is low, there are few industrialized examples, and the overall economic benefits are not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] One aspect of this embodiment provides a method for recycling waste lead-acid batteries, the method for recycling waste lead-acid batteries includes the following steps:

[0047] (1) Dismantling and sorting of waste lead-acid batteries: Dismantle waste lead-acid batteries and divide them into three categories: waste acid, waste plastic and lead-containing solid waste;

[0048] (2) Liquid waste acid treatment: use a filter press to filter the liquid waste acid, the filtration pressure is 0.5MPa, and the volume is 6-7mm 3 The solid impurity particles are removed to obtain sulfuric acid liquid, which is recycled and reused;

[0049] (3) Waste plastics treatment: wash the waste plastics with clean water, and then lead the rinsed water into the sewage tank. The rinsed waste plastics are subjected to vacuum pyrolysis reaction at a temperature of 660-680°C to obtain pyrolysis oil and pyrolysis gas. ;

[0050](4) Crude lead smelting: Put the lead-containing solid waste into t...

Embodiment 2

[0062] One aspect of this embodiment provides a method for recycling waste lead-acid batteries, the method for recycling waste lead-acid batteries includes the following steps:

[0063] (1) Dismantling and sorting of waste lead-acid batteries: Dismantle waste lead-acid batteries and divide them into three categories: waste acid, waste plastic and lead-containing solid waste;

[0064] (2) Liquid waste acid treatment: use a filter press to filter the liquid waste acid, the filtration pressure is 0.4-0.5MPa, and the volume is 6-7mm 3 The solid impurity particles are removed to obtain sulfuric acid liquid, which is recycled and reused;

[0065] (3) Waste plastics treatment: wash the waste plastics with clean water, and then lead the rinsed water into the sewage tank. The rinsed waste plastics are subjected to vacuum pyrolysis reaction at a temperature of 660-680°C to obtain pyrolysis oil and pyrolysis gas. ;

[0066] (4) Crude lead smelting: Put the lead-containing solid waste i...

Embodiment 3

[0078] One aspect of this embodiment provides a method for recycling waste lead-acid batteries, the method for recycling waste lead-acid batteries includes the following steps:

[0079] (1) Dismantling and sorting of waste lead-acid batteries: Dismantle waste lead-acid batteries and divide them into three categories: waste acid, waste plastic and lead-containing solid waste;

[0080] (2) Liquid waste acid treatment: use a filter press to filter the liquid waste acid, the filtration pressure is 0.4-0.5MPa, and the volume is 6-7mm 3 The solid impurity particles are removed to obtain sulfuric acid liquid, which is recycled and reused;

[0081] (3) Waste plastics treatment: wash the waste plastics with clean water, and then lead the rinsed water into the sewage tank. The rinsed waste plastics are subjected to vacuum pyrolysis reaction at a temperature of 660-680°C to obtain pyrolysis oil and pyrolysis gas. ;

[0082] (4) Crude lead smelting: Put the lead-containing solid waste i...

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Abstract

The invention belongs to the technical field of the accumulator recycling, and provides a scrap lead accumulator recycling method. The method comprises the following steps: (1) dismantling and sorting the scrap lead accumulator; (2) treating liquid waste acid pickle; (3) treating waste plastic; (4) smelting lead matte; (5) purifying; (6) producing lead alloy; (7) removing dust; (8) water film dust removing: collecting the waste gas in the dust removing step (7) to guide into the water film dust removing system to perform the water film dust removing, wherein the gas after dust removing is discharged into the atmosphere. The scrap lead accumulator recycling method provided by the invention is low in energy consumption, high in yield, and free from causing secondary pollution on the environment.

Description

technical field [0001] The invention belongs to the technical field of storage battery recycling, and in particular relates to a method for recycling waste lead storage batteries. Background technique [0002] Lead-acid batteries are used in a wide variety of applications to power a wide variety of products. Lead-acid batteries are composed of positive and negative plates, separators, shells, electrolytes, and wiring pile heads, etc. The chemical reaction of the discharge depends on the positive plate active material (lead Lead) is carried out under the action of electrolyte (dilute sulfuric acid solution). Among them, the grid of the plate is made of lead-antimony alloy for traditional batteries, and the maintenance-free battery is made of lead-calcium alloy. [0003] Waste lead-acid batteries contain heavy metals such as mercury, lead, cadmium, chromium, nickel, manganese, and electrolyte solutions such as acid and alkali. Once they enter the human body, they will damage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54C22B7/00C22B13/02
CPCC22B7/001C22B13/025H01M10/54Y02P10/20Y02W30/84
Inventor 程劲松
Owner HEFEI SHANGQIANG ELECTRIC TECH CO LTD
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