Rare Element Resources
Bear Lodge Project
Canadian NI 43-101 Technical Report
October 9
th
, 2014
10135-200-46 - Rev. 0
17-65
Table 17.19 - WT Primary Magnetic Separation Recoveries
Stream
Recovery (Wt %)
%
SiO2
Al2O3
CaO
MnO
Fe2O3
REO
+Y
CREO
+Pr
Th+U
Ro Magnetic Conc
(Prim)
18.2
7.21
7.54
7.64
61.2
54.6
40.3
40.3
39.3
Ro Magnetic Tails
(Prim)
81.8
92.8
92.5
92.4
38.8
45.4
59.7
59.7
60.7
(SGS Lakefield, 2014)
17.14.4.5
WT Primary Gravity Separation
The recoveries for the primary gravity separation step for the main
components of the Whitetail Resource are presented in Table 17-20.
Table 17.20 - WT Primary Gravity Separation Recoveries
Stream
Recovery (Wt %)
%
SiO2
Al2O3
CaO
MnO
Fe2O3
REO
+Y
CREO
+Pr
Th+U
Sc Gravity Conc (Prim)
13.2
9.27
9.18
17
38.7
22.4
25.9
24.6
21.7
Sc Gravity Tails (Prim)
86.8
90.7
90.8
83
61.3
77.6
74.1
75.4
78.3
(SGS Lakefield, 2014)
17.15 Outputs
The output of the METSIM PUG Model is a series of mass balances and pre-
concentrate compositions that were used to size the equipment and define the
Hydromet feed composition for each year of the facility operation.
17.16 Hydrometallurgical Processing
General
17.16.1
The hydrometallurgical processing plant (Hydromet) employs a series of leaching and
selective precipitation steps to extract the valuable REE from the pre-concentrate and
generate a pure, thorium-free mixed-REO product.
