Leaching time, min | Extraction rate % | |||||
La | Ce | Y | TiO2 | SiO2 | P2O5 | |
60 | 81.8 | 73.0 | 19.9 | 17.6 | 3.3 | 96.5 |
120 | 89.3 | 77.8 | 19.9 | 17.1 | 0.0 | 93.7 |
180 | 89.3 | 79.8 | 25.2 | 18.0 | 0.0 | 91.4 |