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Power lithium ion battery all metal recycling and cyclic utilizing method

A lithium-ion battery and all-metal technology, which is applied in the field of all-metal recycling of power lithium-ion batteries, can solve problems such as incomplete lithium precipitation, difficulty in realizing full recovery of lithium-ion batteries, and products that cannot meet battery-grade standards, and achieve recycling The effect of high rate, efficient recovery and short process

Active Publication Date: 2019-12-27
衢州华友资源再生科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of lithium and sodium separation, problems such as incomplete lithium precipitation
[0004] The existing recycling technology is difficult to realize the comprehensive recovery of cobalt, nickel, manganese, and lithium in lithium-ion batteries, and the recycled and prepared products cannot meet the battery-grade standards, and then return to the source of lithium battery powder preparation to achieve the purpose of closed recycling of resources

Method used

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  • Power lithium ion battery all metal recycling and cyclic utilizing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take the used lithium-ion battery, put the battery into the crusher with a lift and a conveyor belt, crush the battery to 1-2.5mm, and then sieve it with a 100-mesh vibrating sieve. Contains battery electrode powder, carbon powder, copper foil and aluminum pellets. The crushed undersize is passed through a 200-mesh sieve again to separate the battery pole powder, carbon powder, aluminum particles and copper foil. The oversize is copper foil, and the undersize is battery pole powder, carbon powder, and aluminum particles. The undersize is sprayed with water, and the water content of the material after spraying is 5%, and then roasted in a carbonization furnace, the roasting temperature is 550°C, and the roasting time is 0.5h, flotation, sieving, and the oversize and undersize are obtained . The oversieve is aluminum-containing material, and the undersieve is battery pole powder.

[0040] Take the battery electrode powder and make a slurry with a solid-to-liquid ratio of ...

Embodiment 2

[0053] Take the used lithium-ion battery, put the battery into the crusher with a lift and a conveyor belt, crush the battery to 4-9mm, and then sieve it with an 80-mesh vibrating sieve. Battery pole powder, carbon powder, copper foil and aluminum pellets. The crushed undersize is sieved again to separate the battery pole powder, carbon powder, aluminum particles and copper foil, the oversize is copper foil, and the undersize is battery pole powder, carbon powder and aluminum particles. The undersize is sprayed with water, and the water content of the material after spraying is 5%, and then roasted in a carbonization furnace, the roasting temperature is 520°C, the roasting time is 1.5h, flotation, sieving, and the oversize and undersize are obtained . The oversieve is aluminum-containing material, and the undersieve is battery pole powder.

[0054] Take the battery electrode powder and mix it with a solid-to-liquid ratio of 1:4. After the slurry is mixed, put the slurry into...

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Abstract

The invention discloses a power lithium ion battery all metal recycling and cyclic utilizing method. Waste lithium ion batteries serve as raw materials, the disassembling-screening and roasting procedures are adopted for separating battery pole powder from other parts in the batteries, then, acid leaching is conducted, and leaching liquid containing cobalt, nickel, manganese and lithium is obtained; through extraction, separation and purification of cobalt, nickel, manganese and lithium are achieved, battery-level cobaltous sulfate, nickel sulfate and manganese sulfate are obtained, then, lithium-sodium separation is conducted, and lithium carbonate and sodium sulfate products are obtained through lithium deposition and concentration. The power lithium ion battery all metal recycling and cyclic utilizing method is green and efficient, danger waste generation is avoided, and large-scale production can be achieved. Various valuable metals are systematically recycled from the waste powerlithium batteries, according to the recycling rates, Co is larger than 95%, Ni is larger than 95%, Mn is larger than 98%, Li is larger than or equal to 94%, and the water cyclic utilization rate is larger than 95%. Nickel sulfate liquid, cobaltous sulfate liquid, manganese sulfate liquid and lithium carbonate obtained through the power lithium ion battery all metal recycling and cyclic utilizing method meet the battery level product standard.

Description

technical field [0001] The invention belongs to the field of resource recovery, and relates to the recovery of power lithium ion battery materials, in particular to a method for the recovery and recycling of all metals of the power lithium ion battery. Background technique [0002] In recent years, the use of lithium-ion batteries has doubled, accompanied by a simultaneous increase in the number of eliminated batteries. Lithium-ion batteries contain high value-added metals such as cobalt, nickel, manganese, and lithium. If it is not recycled, it will not only waste resources, but also the electrolyte and other substances contained in the battery will easily cause environmental pollution. Therefore, it is necessary to effectively recycle batteries to realize recycling of resources. [0003] In the process of purification and separation of valuable elements in lithium-ion batteries, aluminum foil, copper foil and battery electrode powder are often not completely separated, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B1/02C22B47/00C22B23/00C22B26/12C22B3/38H01M10/54C01G53/10C01G51/10C01G45/10C01D15/08
CPCC01D15/08C01G45/10C01G51/10C01G53/10C22B1/02C22B7/007C22B23/043C22B26/12C22B47/00C22B3/3842C22B3/3844C22B3/3846H01M10/54Y02W30/84Y02P10/20
Inventor 沈建中孙灿王青山冯炎飞
Owner 衢州华友资源再生科技有限公司
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