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Method for preparing lithium-ion sieve from waste lithium-ion batteries

A lithium-ion battery, lithium-ion technology, applied in chemical instruments and methods, lithium compounds, lithium carbonate;/acid carbonate, etc., to achieve the effects of low production cost, simple process flow, and high comprehensive utilization rate

Inactive Publication Date: 2019-05-17
天齐锂业资源循环技术研发(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, there is no process for preparing lithium-ion sieves from waste lithium-ion batteries containing manganese in the prior art

Method used

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  • Method for preparing lithium-ion sieve from waste lithium-ion batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: A method for preparing lithium-ion sieves using waste lithium-ion batteries

[0042] Include the following steps in order:

[0043]Take 50g of ternary waste lithium battery cell powder, add 4mol / L sulfuric acid, stir and react at 40°C for 90min, then filter to obtain leaching residue and a solution containing nickel-cobalt-manganese-lithium (leaching rate see attached figure 1 ), adjust the pH of the filtrate ≈ 4.2~4.5, use the extractant P204 to extract and remove impurities, remove impurities such as copper, zinc, calcium, magnesium, iron, manganese, and the raffinate contains copper, zinc, calcium, magnesium, iron, and manganese. Nickel-cobalt-lithium sulfate solution less than 10mg / L;

[0044] For the P204 raffinate, adjust its pH ≈ 5, use the extractant C272 to extract cobalt, and obtain a nickel-lithium sulfate solution containing copper, zinc, calcium, magnesium, iron, manganese, and cobalt less than 10mg / L. After stripping, a solution containing onl...

Embodiment 2

[0048] Embodiment 2: A kind of method utilizing waste lithium ion battery to prepare lithium ion sieve

[0049] Include the following steps in order:

[0050] Take 50g of ternary waste lithium battery cell powder, add 4mol / L sulfuric acid, stir and react at 60°C for 120min, then filter to obtain leaching residue and a solution containing nickel-cobalt-manganese-lithium (leaching rate see attached figure 1 ), adjust the pH of the filtrate to 4.5, use the extractant P204 to extract and remove impurities, remove impurities such as copper, zinc, calcium, magnesium, iron, manganese, and the raffinate contains less than 10mg of copper, zinc, calcium, magnesium, iron, and manganese The nickel cobalt lithium sulfate solution of / L;

[0051] For the P204 raffinate, adjust its pH to 4.8, use the extractant C272 to extract cobalt, and obtain a nickel-lithium sulfate solution containing copper, zinc, calcium, magnesium, iron, manganese, and cobalt that are less than 10 mg / L. After strip...

Embodiment 3

[0055] Example 3: A method for preparing lithium-ion sieves using waste lithium-ion batteries

[0056] Include the following steps in order:

[0057] Take 50g of ternary waste lithium battery cell powder, add 4mol / L sulfuric acid, stir and react at 80°C for 60min, then filter to obtain leaching residue and a solution containing nickel-cobalt-manganese-lithium (leaching rate see attached figure 1 ), adjust the filtrate pH ≈ 4.2-4.5, use the extractant P204 to extract and remove impurities, remove copper, zinc, calcium, magnesium, iron, manganese and other impurities, the raffinate contains copper, zinc, calcium, magnesium, iron, manganese Nickel-cobalt-lithium sulfate solution less than 10mg / L;

[0058] For the P204 raffinate, adjust its pH ≈ 5, use the extractant C272 to extract cobalt, and obtain a nickel-lithium sulfate solution containing copper, zinc, calcium, magnesium, iron, manganese, and cobalt less than 10mg / L. After stripping, a solution containing only cobalt sulf...

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Abstract

The invention discloses a method for preparing a lithium-ion sieve from waste lithium-ion batteries. The method is characterized by comprising the steps: sulfuric acid and a manganese-containing wastelithium-ion battery cathode material react at 40-100 DEG C to obtain leaching slag and leachate; the pH of the leachate is adjusted, and the leachate is subjected to extraction for impurity removingthrough P204; the pH of P204 raffinate is adjusted, and cobalt is extracted from the P204 raffinate through C272; the C272 after extracting is subjected to reextraction, and evaporative crystallization is conducted to obtain a cobalt sulfate product; the pH of C272 raffinate is adjusted, and nickel is extracted from the C272 raffinate through P507; the P507 after extracting is subjected to reextraction, and evaporative crystallization is conducted to obtain a nickel sulfate product; P507 raffinate is subjected to a sodium carbonate lithium sinking process to obtain a lithium carbonate product;the leaching slag and the lithium carbonate product are mixed to be roasted, and a lithium-ion sieve precursor is obtained; and the lithium-ion sieve precursor is subjected to acidic conversion through hydrochloric acid, and the lithium-ion sieve is obtained. The technological process is simple, and battery-grade cobalt sulfate, nickel sulfate, lithium carbonate and lithium-ion sieve with high added value can be obtained.

Description

technical field [0001] The invention relates to the field of recycling waste lithium ion batteries, in particular to a method for preparing lithium ion sieves from waste lithium ion batteries. Background technique [0002] Cobalt sulfate is mainly used in lithium batteries, and is also used in electroplating, ceramic glazes and paint drier, production of cobalt-containing pigments, catalysts, analytical reagents, feed additives, tire adhesives and other cobalt products; nickel sulfate is mainly used in lithium batteries , electroplating and catalyst industries; lithium carbonate is mainly used in lithium batteries, and also used in the preparation of catalysts for chemical reactions, semiconductors, ceramics, television, medicine and atomic energy industries; lithium ion sieves are mainly used in the adsorption of lithium-containing wastewater and salt lake brine. [0003] In recent years, lithium ion sieve, as a high value-added adsorbent, plays an important role in the ext...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D15/00C01D15/08C01G51/10C01G53/10
Inventor 王光辉高洁肇巍王梦胡曦王蒙蒙赵莉周复
Owner 天齐锂业资源循环技术研发(江苏)有限公司
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