Method for preferentially extracting lithium and recycling valuable metals from waste ternary lithium ion battery positive electrode materials

A technology for lithium-ion batteries and positive electrode materials, which is applied in the field of resource recycling of waste batteries, can solve problems such as high cost of recycling lithium elements, low-quality lithium products, and complicated processes, and achieves low prices, strong hydrophobicity, and high-efficiency treatment processes. simple effect

Pending Publication Date: 2022-01-14
JINCHUAN GROUP LIMITED +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the technical problems of the traditional waste and old ternary lithium ion battery positive electrode material processing technology, s

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  • Method for preferentially extracting lithium and recycling valuable metals from waste ternary lithium ion battery positive electrode materials
  • Method for preferentially extracting lithium and recycling valuable metals from waste ternary lithium ion battery positive electrode materials
  • Method for preferentially extracting lithium and recycling valuable metals from waste ternary lithium ion battery positive electrode materials

Examples

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Example Embodiment

[0035] Example 1

[0036] Weigh 50g used nickel-watery-rich three-dimensional lithium ion battery positive electrode material, add 24 mL of 60% concentrated sulfuric acid, mix well, mix well, mix the material is loose, and the material is placed in a boat, calcined with a calcined furnace, calcined temperature 400 ° C, Calcination for 3 h then naturally cools. After the calcination, the material was taken out, 150 ml of pure water was added to normal temperature leaching, the leaching process was added to the pH of the sodium hydroxide solution to adjust the pH of 10.4, the leaching time was 1 h, and the leaching was filtered, the filtrate slag sampling detection, the filtrate was precipitated and ion exchange Methods The lithium carbonate products were added to the addition of sodium carbonate after addition. After the filter residue is pulled up from 1: 5, heated to 60 ° C, and the sulfuric acid solution is added to adjust the pH 1.0, and the reaction is 20 min, and the sulfuric...

Example Embodiment

[0037] Example 2

[0038] Weigh 500g used nickel-manganese three-dimensional ion battery positive electrode material, add 145 mL of 98% concentrated sulfuric acid, mix well, mix well, granules of loose, material is placed in a boat, calcined with a calcined furnace, calcination temperature 600 ° C, Calcined for 1 h, then naturally cool down. After the calcination, the material was taken out, 2500 ml of pure water was added to normal temperature leaching, the leaching process was added to 10% sodium hydroxide solution to adjust the pH of the hydroxide 10, the leaching time was 100 min, and the leaching was filtered, the filtrate slag sampling detection, the filtrate was precipitated and ion exchange Methods The lithium carbonate products were added to the addition of sodium carbonate after addition. After the filter residue is pulled by solid fluid ratio 1: 3, heated to 60 ° C, adding a sulfuric acid solution to adjust pH0.9, after 15 min, and stream of sulfuric acid and hydrogen oxy...

Example Embodiment

[0039] Example 3

[0040] Weigh 1000g used nickel-watery-rich three-dimensional ion battery positive material, add 920 ml of 30% concentrated sulfuric acid, mix well, mix well, granules, material is placed, and the material is placed in a boat, calcined, calcined temperature 500 ° C, Calcination for 4 h then naturally cools. After the calcination, the material was taken out, and 4000 ml of pure water was added to normal temperature leaching. The leaching process was added to the lithium hydroxide solution to adjust the pH of 10.5, the leaching time 2 h, the leaching was completed, and the filtrate slag sampling detection, the filtrate was precipitated and ion exchange Methods The lithium carbonate products were added to the addition of sodium carbonate after addition. After the filter residue was pulpized from 1: 4, heated to 60 ° C, the sulfuric acid solution was added to adjust pH0.9, and after 20 min, the process was added to the sulfuric acid and hydrogenly oxygen, and the pro...

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Abstract

The invention discloses a method for preferentially extracting lithium and recycling valuable metals from waste ternary lithium ion battery positive electrode materials. The method comprises the following steps that the positive electrode material obtained by disassembling, crushing and separating the waste lithium ion battery is uniformly mixed with concentrated sulfuric acid, roasting is carried out at the temperature of between 400 and 600 DEG C, leaching is carried out a roasted product by using pure water and a dilute alkali solution, lithium-containing aqueous solution is obtained, and a Li<2>CO<3> or a lithium hydroxide product is prepared after impurity removal; and the valuable elements such as cobalt, nickel and manganese in water leaching residues are leached out through a reduction acid leaching method, and corresponding compound products are prepared after impurity removal, extraction and purification. The method is simple in process, short in flow, low in reagent cost and capable of efficiently recycling valuable metal elements such as lithium, cobalt, nickel and manganese in the waste ternary lithium ion battery material.

Description

technical field [0001] The invention belongs to the technical field of resource recycling of waste batteries, and relates to a treatment method for waste ternary lithium-ion batteries, in particular to a method for preferentially extracting lithium from positive electrode materials of waste ternary lithium-ion batteries to recover nickel, cobalt, manganese, etc. valence metal method. Background technique [0002] In the past 20 years, the lithium-ion battery industry chain has developed rapidly. With the arrival of the climax of decommissioned batteries, the shortage of resources and environmental problems caused by it are becoming more and more serious. Therefore, the development and application of economical and efficient waste lithium-ion battery recycling technology is imminent, and the reasonable recycling of valuable metals in waste lithium-ion batteries has important economic and environmental significance. [0003] At present, most domestic recycling of waste terna...

Claims

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Application Information

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IPC IPC(8): C22B7/00H01M10/54C22B26/12C22B1/06C22B23/00C22B47/00
CPCC22B7/007H01M10/54C22B26/12C22B1/06C22B7/002C22B23/043C22B47/00C22B7/008Y02P10/20Y02W30/84
Inventor 胡家彦柴艮风曹笃盟衣淑立马骞吴晖君陈天翼张振华吴芳何艳颉颐冯燕
Owner JINCHUAN GROUP LIMITED
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