Table 3 Leaching rates of Li under different ultrasound conditions.
Order number | Ultrasound frequency (kHz) | Ultrasound time (s) | Li leaching rate (%) |
|---|---|---|---|
1 | 16 | 120 | 94.5 |
2 | 20 | 120 | 97.1 |
3 | 24 | 120 | 99.7 |
4 | 28 | 120 | 95.4 |
5 | 36 | 120 | 85.3 |
6 | 40 | 120 | 83.0 |
7 | 24 | 30 | 94.2 |
8 | 24 | 60 | 96.6 |
9 | 24 | 90 | 97.9 |
10 | 24 | 150 | 84.2 |
11 | 24 | 180 | 83.1 |
