Rare Element Resources
Bear Lodge Project
Canadian NI 43-101 Technical Report
October 9
th
, 2014
10135-200-46 - Rev. 0
17-51
Flocculent
Flocculent will be added, based on the production rate, and ore type to increase
the separation efficiency of the solid particles from the water medium. The type of
flocculent used will be a medium to high molecular weight, non-ionic
polyacrylamide type. The flocculent consumption rate is 0.34 pounds (0.15
kilogram) per short ton of dry pre-concentrate thickener feed.
Electricity
The expected power consumption for the PUG will vary considerably depending
on which process circuits are running.
During the first 9 years of operation, only the coarse crushing and screening circuit
will be installed. The power will be provided by diesel powered generating units.
The estimated power consumption is 670 kW/h.
After the first nine years, the PUG will be connected to the power grid and the pre-
concentration circuits will be completed and put into operation. The estimated
power consumption will be 670 kW/h for crushing and screening only, 1,820 kW/h
for Preconcentration operation, plus an additional 340 kW/h when magnetic
separation is also running.
Table 17.3 presents the electrical consumption of the PUG by area.
Table 17.3 - PUG Plant Power Consumption by Area
Power Area
Installed kW/h
Operating
kW/h
Crushing Circuit
697
270
Primary & Secondary
Classifying
571
386
Grinding & Gravity
Classifying
399
272
Magnetic Separation
891
340
Reject Dewatering
131
83
Pre-Concentrate
Dewatering
431
205
PUG Water
336
71
Utilities & Services
399
170
Building (Lighting/HVAC)
600
360
Total
4,455
2,157
(Roche, 2014)
