NI43-101Pre-Feasibility Study Report - page 227

Rare Element Resources
Bear Lodge Project
Canadian NI 43-101 Technical Report
October 9
, 2014
10135-200-46 - Rev. 0
Figure 13.16 - Pilot Distillation Column at SGS
(SGS Lakefield, 2014)
The weight of acid in feed solution to the distillation and final products (bottom and
top) for each cycle is shown in Table 13.23 below. Table 13.24 shows which
distillation column cycles correspond to each test campaign. Feed to the column is
shown in Table 13.25. The bottom product is a metal rich residue with appreciable
amounts of oxalic acid. The oxalic acid is crystallized out leaving base metals in the
filtrate with some HCl acid. At start up, before Azeotropic conditions, more water than
1...,217,218,219,220,221,222,223,224,225,226 228,229,230,231,232,233,234,235,236,237,...587
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