Rare Element Resources
Bear Lodge Project
Canadian NI 43-101 Technical Report
October 9
th
, 2014
10135-200-46 - Rev. 0
13-31
Figure 13.12 - Flowsheet of the Pre-Leach Circuit
(SGS Lakefield, 2014)
Oxalates were effectively recycled in PP6 and PP7 campaigns to lower the fresh
reagent requirement. The reagent consumptions in the PP6 and PP7 campaigns
were 36% to 59% lower than PP5. Oxalates were not recycled under the PP5
campaign. In general, oxalic acid consumption ranged from 296 kg/t in PP5 (COMP
B) to 121 kg/t in PP6 (COMP C). When RE oxalates are not recycled, high losses of
REEs may occur in barren PLS.
