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Method for preparing lithium carbonate from waste and old trinary lithium ion battery electrode power material

A lithium-ion battery, lithium carbonate technology, applied in battery recycling, waste collector recycling, recycling technology, etc., can solve problems such as pollution recovery rate, and achieve high recovery rate, good environmental compatibility, and reasonable design.

Inactive Publication Date: 2018-05-08
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problems of pollution and low recovery rate in the process of recycling waste lithium-ion batteries, and provide a method for extracting lithium carbonate from waste ternary lithium-ion battery electrode mixed powder. The process is simple, the recycling efficiency is high, and the compatibility with the environment is good, so as to achieve the goal of green and efficient recycling

Method used

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  • Method for preparing lithium carbonate from waste and old trinary lithium ion battery electrode power material
  • Method for preparing lithium carbonate from waste and old trinary lithium ion battery electrode power material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: a kind of from waste and old Li (Ni 1 / 3 co 1 / 3 mn 1 / 3 )O 2 The method for producing lithium carbonate in the electrode powder of ternary lithium ion battery, as figure 1 shown, including the following steps:

[0034] (1) Mixing

[0035] The waste Li(Ni 1 / 3 co 1 / 3 mn 1 / 3 )O 2 The electrode powder of the ternary lithium-ion battery is dry mixed. The electrode powder is composed of positive electrode powder and negative electrode powder. The positive electrode powder includes ternary active materials, binders and conductive carbon. The negative electrode powder materials include graphite, Binders and thickeners. The mixed powder is carried out mechanical ball milling, the mass ratio of ball to material is 10: 1, the rotating speed is 250r / min, and the ball milling time is 0.5 h, so that it is evenly mixed;

[0036] (2) Calcination

[0037] The powder mixed in step (1) was calcined in a vacuum high-temperature furnace, the vacuum pressure range of t...

Embodiment 2

[0042] Embodiment 2: a kind of from waste and old Li (Ni 0.5 co 0.2 mn 0.3 )O 2 The method for producing lithium carbonate in the electrode powder of ternary lithium ion battery, as figure 1 shown, including the following steps:

[0043] (1) Mixing

[0044] The waste Li(Ni 0.5 co 0.2 mn 0.3 )O 2 The electrode powder of the ternary lithium-ion battery is dry mixed. The electrode powder is composed of positive electrode powder and negative electrode powder. The positive electrode powder includes ternary active materials, binders and conductive carbon. The negative electrode powder materials include graphite, Binders and thickeners. The mixed powder is carried out mechanical ball milling, the mass ratio of ball to material is 20: 1, the rotating speed is 100 r / min, and the ball milling time is 1 h, so that it is evenly mixed;

[0045] (2) Calcination

[0046] The powder mixed in step (1) was calcined in a vacuum high-temperature furnace, the vacuum pressure range of th...

Embodiment 3

[0051] Embodiment 3: a kind of from waste and old Li (Ni 0.7 co 0.15 mn 0.15 )O 2 The method for producing lithium carbonate in the electrode powder of ternary lithium ion battery, as figure 1 shown, including the following steps:

[0052] (1) Mixing

[0053] The waste Li(Ni 0.7 co 0.15 mn 0.15 )O 2 The electrode powder of the ternary lithium-ion battery is dry mixed. The electrode powder is composed of positive electrode powder and negative electrode powder. The positive electrode powder includes ternary active materials, binders and conductive carbon. The negative electrode powder materials include graphite, Binders and thickeners. The mixed powder is carried out mechanical ball milling, the mass ratio of ball to material is 5: 1, the rotating speed is 500 r / min, and the ball milling time is 0.1 h, so that it is evenly mixed;

[0054] (2) Calcination

[0055] The powder mixed in step (1) was calcined in a vacuum high-temperature furnace, the vacuum pressure range ...

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Abstract

The invention relates to a recovery process of a waste and old trinary lithium ion battery, in particular to a method for preparing lithium carbonate from a waste and old trinary lithium ion battery electrode power material. By using the method, the waste and old trinary lithium ion battery electrode power material is treated through steps of material mixing, calcination, lithium bicarbonate production and spray drying. The prepared lithium bicarbonate has high content, high purity and high recovery rate. The process route is a green and environment-friendly process; the environment compatibility is high.

Description

technical field [0001] The invention relates to a recovery process of waste ternary lithium-ion batteries, in particular to a method for preparing lithium carbonate from waste ternary lithium-ion battery electrode powder. Background technique [0002] The recycling technologies of waste lithium-ion batteries are mainly liquid-phase method and solid-phase method. The liquid-phase method needs to use a large amount of acid and alkali, which not only has a high cost, but also pollutes the environment. For example, the Chinese patent document whose publication number is CN 101871048A discloses a method for recovering cobalt, nickel and manganese from waste lithium-ion batteries. Method: Immerse the positive electrode material of the waste lithium-ion battery in low-concentration lye, recover the non-reactive positive electrode black powder, dissolve the recovered black powder with low-concentration acid, and then use Na 2 SO 5 、Na 2 SO 3 Or add concentrated sulfuric acid to ...

Claims

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Application Information

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IPC IPC(8): H01M10/54
CPCY02W30/84H01M10/54
Inventor 董振伟陈瑞兴熊海岩高远浩陈浩张帅阳
Owner XUCHANG UNIV
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