Method for recycling high-value-added metals from waste nickel-cobalt-manganese lithium ion batteries

A nickel-cobalt-manganese-lithium and ion battery technology, which is applied in the field of lithium battery recycling, can solve the problems of difficult leachate treatment, environmental secondary pollution, complex process, etc., and achieve the effects of promoting high-efficiency leaching, reducing recycling costs, and simple process

Inactive Publication Date: 2018-11-30
ENERGY RES INST OF SHANDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these existing dissolution and leaching methods generally have complicated processes, long processes, and release of Cl during leaching. 2 , SO 3 and NO x Toxic gas and other problems, and the leachate is difficult to handle, which is easy to cause secondary pollution to the environment

Method used

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  • Method for recycling high-value-added metals from waste nickel-cobalt-manganese lithium ion batteries
  • Method for recycling high-value-added metals from waste nickel-cobalt-manganese lithium ion batteries
  • Method for recycling high-value-added metals from waste nickel-cobalt-manganese lithium ion batteries

Examples

Experimental program
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Effect test

Embodiment 1

[0045] A method for recovering high value-added metals from waste nickel-cobalt-manganese lithium-ion batteries, comprising the steps of:

[0046] (1) Put the used battery with voltage into 5% sodium chloride solution with iron powder for thorough discharge, disassemble and select the ternary positive electrode powder containing nickel, cobalt and manganese, and heat treat it in a muffle furnace at 600 °C 0.5h, remove impurities such as binder and conductive agent in the powder;

[0047] (2) Add 6g of heat-treated powder and 1g of EDTA-2Na into a planetary ball mill tank, wherein the mass ratio of balls to materials is 1:1, the ball milling medium is zirconia, the speed is 500rpm, and ball milling is activated for 0.1h;

[0048] (3) Add the activated powder to 0.1M citric acid-D glucose (the mass ratio of citric acid and D glucose is 0.05) leaching solution, wherein the solid-to-liquid ratio is 5g / L, and then react with a condenser The leaching reaction was carried out in the...

Embodiment 2

[0051] A method for recovering high value-added metals from waste nickel-cobalt-manganese lithium-ion batteries, comprising the steps of:

[0052] (1) Put the used battery with voltage into 5% sodium chloride solution with iron powder for thorough discharge, disassemble and select the ternary positive electrode powder containing nickel, cobalt and manganese, and heat treat it in a muffle furnace at 400 °C 2h, remove impurities such as binder and conductive agent in the powder;

[0053] (2) Add 3g of heat-treated powder and 1g of EDTA into a planetary ball mill tank, wherein the mass ratio of ball to material is 1:10, the ball mill medium is zirconia, the speed is 3000rpm, and the ball mill is activated for 5h;

[0054] (3) Add the activated positive electrode powder to 5M citric acid-D glucose (the mass ratio of citric acid and D glucose is 0.5) leaching solution, wherein the solid-to-liquid ratio is 10g / L, and then react with a condenser The leaching reaction was carried out...

Embodiment 3

[0057] A method for recovering high value-added metals from waste nickel-cobalt-manganese lithium-ion batteries, comprising the steps of:

[0058] (1) Put the used battery with voltage into 5% sodium chloride solution with iron powder for thorough discharge, disassemble and select the ternary positive electrode powder containing nickel, cobalt and manganese, and heat treat it in a muffle furnace at 500 °C 1h, remove impurities such as binder and conductive agent in the powder;

[0059] (2) Add 5g of heat-treated powder and 5g of EDTA into a planetary ball mill tank, wherein the mass ratio of balls to materials is 1:20, the ball milling medium is agate beads, the rotation speed is 2000rpm, and the ball milling is activated for 8h;

[0060] (3) Add the activated positive electrode powder to 10M citric acid-D glucose (the mass ratio of citric acid and D glucose is 0.25) leaching solution, wherein the solid-to-liquid ratio is 30g / L, and then react with a condenser The leaching re...

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Abstract

The invention relates to a method for recycling high-value-added metals from waste nickel-cobalt-manganese lithium ion batteries and belongs to the technical field of recovery of lithium batteries. The method comprises the following steps: (1) thoroughly discharging waste nickel-cobalt-manganese batteries, disassembling and sorting out positive powder, and carrying out heat treatment on the positive powder to remove impurity components such as conductive agents and adhesives in the positive powder; (2) mixing the positive powder subjected to heat treatment with active additive according to a ratio, then mechanically and finely grinding so as to carry out machine-chemical synergistic activation of the positive powder; and (3) mixing the activated positive powder with citric acid-D glucose leachate leaching agent, then carrying out leaching reaction and precipitating nickel, cobalt, manganese and lithium in the filtrate to obtain the high-value-added metals. According to the method, citric acid in the citric acid-D glucose leachate can be recycled after extracting the metal elements; high consumption of the leachate is avoided; the leaching efficiency is improved; the recycling costis reduced.

Description

technical field [0001] The invention relates to the technical field of recycling lithium batteries, in particular to a method for recovering high value-added metals from waste nickel-cobalt-manganese lithium-ion batteries. Background technique [0002] my country's new energy vehicles are in an important period of rapid development. Power batteries are the core components of new energy vehicles, and lithium-ion batteries are considered to be the first choice for automotive power batteries due to their excellent comprehensive performance. The rapid development of new energy vehicles and the high quantity and high-quality demand for power batteries will inevitably bring about the problem of recycling and reusing a large number of scrapped power batteries that cannot be ignored. Used lithium-ion batteries are typical hazardous solid wastes, and the rich metal resources contained in them urgently need to be rationally recycled. Recycling waste power lithium-ion batteries and el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/00C22B7/00C22B23/00C22B26/12C22B47/00H01M10/54
CPCC22B1/005C22B7/007C22B23/0415C22B26/12C22B47/00H01M10/54Y02P10/20Y02W30/84
Inventor 秦显忠杨改蔡飞鹏王波蒋波陈花谭春晖
Owner ENERGY RES INST OF SHANDONG ACAD OF SCI
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