Method for treating waste secondary battery

A secondary battery and treatment method technology, applied in battery recycling, waste collector recycling, recycling technology, etc., can solve problems such as potential safety hazards, difficulty in crushing, low recovery rate of valuable elements, etc., to prevent explosions and prolong stay the effect of time

Active Publication Date: 2014-04-16
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 e

Method used

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  • Method for treating waste secondary battery

Examples

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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 fields of wet metallurgy and chemical industry production and discloses a method for treating a waste secondary battery. The method comprises the following steps: performing two-stage combustion in a rotary kiln, maintaining the furnace temperature to be at 100-150 DEG C, roasting the waste secondary battery on the furnace front, and remaining for 30-60 minutes to ensure that a sealing ring in the waste secondary battery is fully pyrolyzed and damaged, so that hydrogen and an organic solvent in the battery are released; and burning the materials in a hearth on the rear of a combustion chamber of the furnace body, maintaining the temperature to be at 300-500 DEG C, fully oxidizing, pyrolyzing and burning organic matters in the wastes, and effectively controlling generation of ozone and nitrogen oxides, so that the produced gas achieves the odor-free, stink-free and completely-combusted effects. The treatment method provided according to the invention is reasonable in design, the operations of burning and breaking are sequentially performed, the breakage rate is high, the recycling rate of valuable elements is high, a high-temperature burning explosion accident can be avoided, and the method is safe, pollution-free and 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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IPC IPC(8): H01M10/54
CPCY02W30/84H01M10/54
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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