A kind of treatment method of waste secondary battery

A secondary battery and treatment method technology, applied in battery recycling, waste collector recycling, recycling technology, etc., can solve the problems of low crushing efficiency, low recovery rate of valuable elements, waste of resources and the environment, and achieve improved crushing efficiency Effect

Active Publication Date: 2016-03-16
GANZHOU HIGHPOWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the increasing demand for secondary batteries, the contradiction between supply and demand of metal raw materials such as cobalt, nickel, and lithium required for the production of secondary batteries will become more prominent; on the other hand, valuable metals such as cobalt, nickel, and manganese in waste secondary batteries High content, many toxic and harmful compounds, if a large number of waste secondary batteries cannot be safely disposed and utilized, it will cause waste of resources and serious environmental pollution problems
It adopts the process of first crushing and then incineration, the crushing efficiency is low, the recovery rate of valuable elements is low, and the organic matter and electrolyte in the battery are easy to leak and pollute the environment, posing a great safety hazard
[0007] At the same time, when recycling waste secondary batteries, it is usually necessary to open the battery casing and recycle the materials in the battery casing, because the secondary battery casing has great strength and toughness, and is compatible with the active material in the casing. Closely bonded together, they may explode when heated or squeezed, making crushing difficult, especially when working in large batches
Although most of the treatment processes given in the existing waste secondary battery recycling patents mention battery fragmentation, the formulations are vague and often have no reference value

Method used

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  • A kind of treatment method of waste secondary battery
  • A kind of treatment method of waste secondary battery
  • A kind of treatment method of waste secondary battery

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A kind of processing method of waste nickel-metal hydride battery, such as figure 1 As shown, it specifically includes the following steps:

[0031] 1) Put the waste Ni-MH battery into the tank filled with electrolyte, so that the residual power in the waste Ni-MH battery is fully discharged;

[0032] 2) Use a conveyor to evenly send the discharged waste Ni-MH batteries into the combustion chamber of the rotary kiln;

[0033]3) Ignition in the rotary kiln for roasting, the combustion flame is introduced into the furnace body through a tangential direction along the combustion chamber furnace body of the rotary kiln, the waste nickel-hydrogen battery and the high-temperature combustion gas are violently stirred, and the oxidation reaction occurs rapidly, and the combustion flame is 2 Rotate along the furnace body at a speed of ~3 m / s, and move axially along the furnace body at a speed of 2~3 m / s to maintain the primary combustion temperature of the rotary kiln within 10...

Embodiment 2

[0046] A kind of processing method of waste lithium ion battery, such as figure 1 As shown, it specifically includes the following steps:

[0047] 1) Put the waste lithium-ion battery into a tank filled with electrolyte, so that the residual power in the waste lithium-ion battery is fully discharged;

[0048] 2) Use a conveyor to evenly send the discharged waste lithium-ion batteries into the rotary kiln combustion chamber;

[0049] 3) The rotary kiln is ignited for incineration. The combustion flame is introduced into the furnace body through a tangential direction along the combustion chamber of the rotary kiln. The waste lithium-ion battery and the high-temperature combustion gas are violently stirred, and the oxidation reaction occurs rapidly. The combustion flame is 2 Rotate along the furnace body at a speed of ~3 m / s, and move axially along the furnace body at a speed of 2~3 m / s to maintain the primary combustion temperature of the rotary kiln within 130-150 °C, and was...

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Abstract

The invention belongs to the technical field of hydrometallurgy and chemical production, and discloses a method for treating waste secondary batteries. By burning in two stages in a rotary kiln, the furnace temperature is first maintained at 100-150°C, and the waste secondary batteries are The front part of the furnace is roasted for 30-60 minutes to ensure that the sealing ring of the waste secondary battery is fully pyrolyzed and destroyed, so that the hydrogen and organic solvent in the battery can be released; Maintain at 300~500°C to fully oxidize, pyrolyze, and burn the organic matter in the waste, and effectively control the generation of odor and nitrogen oxides, so that the generated gas can achieve the effect of no peculiar smell, no foul smell, and complete combustion. The treatment method provided by the invention has a reasonable design, is incinerated first and then crushed, has a high crushing rate, a high recovery rate of valuable elements, can avoid high-temperature incineration and explosion accidents, is safe and pollution-free, and is suitable for popularization.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy and chemical production, and in particular relates to a treatment method for waste secondary batteries. Background technique [0002] Due to its high energy density, light weight, long life and other excellent characteristics, secondary batteries are widely used in communication tools such as mobile phones, notebook computers, digital cameras, digital electronic products, electric tools, electric vehicles and other fields. my country has become the world's largest Secondary battery production and consumption countries. [0003] With the increasing demand for secondary batteries, the contradiction between supply and demand of metal raw materials such as cobalt, nickel, and lithium required for the production of secondary batteries will become more prominent; on the other hand, valuable metals such as cobalt, nickel, and manganese in waste secondary batteries High content, many toxic and har...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54
CPCY02W30/84
Inventor 区汉成桂金鸣祝捷李先柏杨勇王敏刘炼施丽华何龙谢丰海
Owner GANZHOU HIGHPOWER TECH CO LTD
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