The effect of roasting on the recovery of REE from the allanite feed sample. The allanite feed sample was roasted in a muffle furnace for two hours. Leaching conditions: 1 M H2SO4, d80 = 47.9 µm, 75 ˚C, S/L ratio = 25 g/L, and 2 h.
The effect of roasting on the recovery of REE from the allanite feed sample. The allanite feed sample was roasted in a muffle furnace for two hours. Leaching conditions: 1 M H2SO4, d80 = 47.9 µm, 75 ˚C, S/L ratio = 25 g/L, and 2 h.