Critical Metals

Ucore Rare Metals (TSXV:UCU) has announced an update on the early-stage performance of the  SuperLig®-One rare earth element separation pilot plant. As quoted in the press release: Pregnant leach solution (“PLS”) derived from the Company’s Bokan-Dotson Ridge project in Alaska has been treated by the first circuit of the SuperLig®-One Molecular Recognition Technology (“MRT”) Plant, …

Ucore Rare Metals (TSXV:UCU) has announced an update on the early-stage performance of the  SuperLig®-One rare earth element separation pilot plant.
As quoted in the press release:

Pregnant leach solution (“PLS”) derived from the Company’s Bokan-Dotson Ridge project in Alaska has been treated by the first circuit of the SuperLig®-One Molecular Recognition Technology (“MRT”) Plant, at the IBC Advanced Technologies, Inc. (“IBC”) Utah facility, to separate and recover the REE contained therein, as a group.
Since announcement of the completion of SuperLig® certifications, PLS analysis, automation control verification, water testing, and process flow testing of the Plant (see Ucore Press Release dated April 4, 2016), PLS has been run through the first processing circuit of the Plant, with the following results:

  • Rare Earth Class Separation from Gangue Metals – The REE, as a group, have been separated from the impurity metals in the PLS (“Gangue Metals”). The Gangue Metals are non-REE constituents such as iron, thorium, uranium, zinc, copper, nickel, titanium, zirconium, and other trace base metals. This early-stage separation of REE from Gangue Metals distinguishes SuperLig®-One from other, less selective technologies such as solvent extraction and ion exchange (“Legacy Separation Technologies”). In the case of Legacy Separation Technologies, Gangue Metals are co-extracted with the REE, necessitating the use of excessive separation stages downstream in order to achieve the same purity levels obtained by SuperLig®.
  • Rare Earth Element Recovery – The REE, as a group, have been recovered at the > 99% level, leaving essentially no REE in the tailings. This accomplishment replicates prior lab-scale work, permitting practically all of the REE originally present in the PLS to be available for commercial utilization. Legacy Separation Technologies result in appreciable quantities of REE remaining in the tailings.
  • Rare Earth Element Purity – The purity of the recovered REE, as a group, have been qualified as > 99%. The paucity of impurity metals in the pure REE solution, resulting from the initial SuperLig® circuit, greatly facilitates subsequent separation of the individual REE.
  • Verification of Results and Confirmation of Scale-up Parameters – The results have been verified analytically at IBC using inductively coupled plasma spectroscopy (“ICP”). The results obtained are consistent with the previous lab-scale test work performed at IBC, confirming that the SuperLig®-One Plant is scaling as expected.

Click here for the full press release.

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