Patent ID: 11894531
Assignee: HUNAN BRUNP EV RECYCLING CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  H  C  Y | IPC C  H

Claim 0:
1. A recovery method for a lithium battery slurry, comprising:
S1: roughly crushing a waste lithium battery slurry containing NMP, and then ball milling to obtain a ball milled slurry;
S2: sieving the ball milled slurry, and adjusting a pH value of the slurry passed through the sieve; wherein the pH value is adjusted to a range of 7.0 to 8.0;
S3: centrifugal spray-drying the pH-adjusted slurry to obtain a solid powder, and condensing and purifying the gas-phase NMP; wherein the centrifugal spray-drying is performed at a temperature of 150° C. to 300° C.