A method for recovering lithium and iron from electric vehicle lithium iron phosphate power battery
A power battery, lithium iron phosphate technology, applied in the direction of iron oxide/iron hydroxide, lithium carbonate;/acid carbonate, etc., can solve the problem of containing a large amount of other metals, affecting quality, and lack of steps to remove metal impurities and other issues to achieve the effect of simple process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0036] 1) Disassemble the waste electric vehicle lithium iron phosphate power battery after discharge to obtain the positive electrode sheet of the battery. Then put it into a vertical high-speed rotary pulverizer for pulverization, and the pulverization time is 10 minutes. The pulverized material is sieved with an 80-mesh standard sieve, and the powder under the 50g sieve is put into a beaker;
[0037] 2) Put the beaker with the powder in a constant temperature water bath at 60°C, add 250ml of sodium hydroxide solution with a mass concentration of 25%, react for 1 hour under stirring, filter, rinse the filter sludge with distilled water several times, and put inside the beaker;
[0038] 3) Add 200ml of 4.0mol / L sulfuric acid and 30ml of 40% hydrogen peroxide, heat to 60°C for 1 hour, and then filter to obtain the leachate;
[0039] 4) Prepare 25% sodium hydroxide solution, slowly add sodium hydroxide solution dropwise to the leaching solution while stirring and monitor the ...
Embodiment 2
[0045] 1) Disassemble the waste electric vehicle lithium iron phosphate power battery after discharge to obtain the positive electrode sheet of the battery. Then put it into a vertical high-speed rotary pulverizer for pulverization, and the pulverization time is 15 minutes. The pulverized material is sieved with an 80-mesh standard sieve, and the powder under the 100g sieve is put into a beaker;
[0046] 2) Put the beaker with the powder in a constant temperature water bath at 50°C, add 300ml of sodium hydroxide solution with a mass concentration of 10%, react for 3 hours under stirring, filter, rinse the filter mud with distilled water several times, put into the beaker;
[0047] 3) Add 450ml of 3.0mol / L sulfuric acid and 50ml of 30% hydrogen peroxide, heat to 90°C for 2 hours, and filter to obtain the leachate;
[0048] 4) Add sodium hydroxide solution to adjust the pH value of the leachate to 2, precipitate ferric hydroxide, and filter to obtain the filtrate;
[0049] 5)...
Embodiment 3
[0054] 1) Disassemble the waste electric vehicle lithium iron phosphate power battery after discharge to obtain the positive electrode sheet of the battery. Then put it into a vertical high-speed rotary pulverizer for pulverization, and the pulverization time is 15 minutes. The pulverized material is sieved with an 80-mesh standard sieve, and the powder under the 200g sieve is put into a beaker;
[0055] 2) Put the beaker with the powder in a constant temperature water bath at 80°C, add 500ml of sodium hydroxide solution with a mass concentration of 30%, react for 3 hours under stirring, filter, rinse the filter sludge with distilled water several times, and put into the beaker;
[0056] 3) Add 600ml of 5.0mol / L sulfuric acid and 200ml of 50% hydrogen peroxide to the filter mud, heat to 80°C for leaching for 1.5 hours, and filter to obtain the leachate;
[0057]4) Add sodium hydroxide solution to adjust the pH value of the leachate to 3, precipitate ferric hydroxide, and fil...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com