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US 2024/0198357 A1Published application
Magnetic separation of electrochemical cell materials
AssigneeRSR Technologies, Inc.
InventorsTimothy W. Ellis, Joshua A. Montenegro
Life of this patent
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Abstract
A process. The process includes forming a slurry comprising electrode active material particles of one or more lithium-ion electrochemical cells, magnetizing the electrode active material particles, and separating the magnetized electrode active material particles from the slurry.
Claims21
-20. (canceled)
A process, the process comprising:
- suspending black mass in a carrier fluid to create a slurry, wherein the black mass comprises paramagnetic and diamagnetic materials, and wherein the slurry comprises between 5 percent and 50 percent black mass by total mass;
- mixing the slurry to maintain the black mass in suspension.
A slurry, the slurry comprising:
- black mass, wherein between 5 percent and 50 percent of the slurry is black mass by total mass and wherein the black mass comprises paramagnetic and diamagnetic materials;
- carrier fluid, wherein the black mass is suspended in the carrier fluid and wherein the slurry is mixed to maintain the black mass in suspension.
A process, the process comprising:
- breaking up particle agglomerates of black mass using ultrasonic dispersion, wherein the black mass comprises paramagnetic and diamagnetic materials;
- washing the black mass with a wash solvent to dissolve and remove polymeric electrode binder from the black mass;
- removing lead or lead compounds from the black mass using a froth flotation treatment;
- suspending the black mass in a carrier fluid to create a slurry, wherein the slurry comprises between 5 percent and 50 percent black mass by total mass;
- mixing the slurry to maintain the black mass in suspension.
2 more elements
Dependencies are inferred from the claim text.