PLATEAU URANIUM confirms commencement of Phase Two of its test-work programme defining recovery of Lithium Carbonate concentr...
November 14 2017 - 9:17AM
Plateau Uranium Inc. (“
Plateau Uranium” or the
"
Company") (TSX-V:PLU) (OTCQB:PLUUF)
(FRANKFURT:QG1), the Lithium and Uranium development company, is
pleased to announce commencement of its new metallurgical test work
programme on representative samples containing Lithium at circa
500-600 ppm Li., and circa 600-6,000 ppm U3O8. The work is being
undertaken to produce a high grade, low mass, Uranium Concentrate
and a separate high grade, low mass magnetic concentrate,
containing the majority of the Lithium contained in the mineralized
material. The test work will be undertaken at the highly respected
research laboratories of SGS Laboratories in Perth, and Ansto
Minerals, in Sydney, Australia, both internationally accredited
laboratory facilities.
The work forms part of the Company’s efforts to
unlock value from the significant lithium resources contained
within its uranium deposits.
Highlights
- The new test-work programme is underway in SGS. It is
anticipated the concentrate samples will be sent to Ansto Minerals
in late Nov 2017. The average U-Li SOC sample contains 579 ppm U
and 402 ppm Li and the higher-grade uranium samples contain 5,906
ppm U and 577 ppm Li.
- The main aims of the Ansto program are to define leach
conditions for treatment of both bulk whole rock and magnetic
concentrate, and to develop some options for the downstream
circuits to produce a lithium carbonate (LC) product. Refining of
the primary LC concentrate has also been considered as part of this
stage.
- Earlier results from SGS will be further optimized to enhance
recoveries to respective separate concentrates of both U and Li,
the senior metals present.
- The SGS work follows a simple and cost-effective metallurgical
process circuit, i.e. attritioning and screening steps. Using
standard metallurgical processing steps, the uranium-bearing
mineral, autunite is separated into a coarse fraction and leached
in a weak sulfuric acid for recovery to an ion exchange resin. The
fine fraction is amenable to magnetic separation resulting in a
lithium-rich concentrate.
- Previous results show more than 80% of the uranium can be
recovered in the plus 1 mm and sub 3.3 mm screen fraction. Leach
tests have shown rapid uranium recoveries exceed 95% in a weak
sulfuric acid tank leach scenario. This has the potential to add
economic value to the previous PEA work reported and significantly
reduce the plant footprint and subsequent capital cost.
- Magnetic separation results indicate that approximately +/-50%
of the lithium present in the PCH sample can be recovered to a
magnetic concentrate comprising only 17% of the original mass. This
new work will seek to further enhance these positive earlier
results.
- Lithium Grades (measured as Li) reported in the magnetic
concentrates were in the 1,800-2,000ppm level or 9,500-10,500 ppm
Li Carbonate equivalent. Recovery of Li from the magnetic
concentrate will follow different approaches to extraction e.g.
roast with sulphate addition, or alkaline roast.
- Test work on the base case Lithium recovery route via whole ROM
leaching via detailed lock cycle test-work continues to go well in
Lima, Peru, and will be reported separately.
- Uranium and lithium co-production at Macusani represents
significant potential value with commodity consensus prices for the
mid to long term (beyond 2020) forecasted to range between
US$53-75/lb. U3O8 and US$8,000-10,000 for Lithium Carbonate
according to CIBC Global Mining Group Analyst Consensus research
published September 29, 2017.
Ian Stalker, Chairman of Plateau Uranium
commented: "PLU management is excited about this
next phase of test work due to be completed at these highly
regarded Laboratories in Australia over the next few months.
Further refining of the primary LC concentrate has also been
considered as part of this phase, which is a significant step
forward in extracting real value from our Lithium by-product.
"It is expected that the results from both labs
will allow us to refine our existing PEA ‘Economic Model’ with a
view to highlighting the positive impact of a large tonnage Lithium
by-product from our Macusani mineralization. To this end, this
phase of test work will be focused on establishing more detail on
the Capital and Operating cost numbers to quantify the potential
value-added impact of uranium and lithium co-production.
"The higher Uranium recoveries being reported at
the elevated leach temperatures are important, particularly as they
build on our already impressive stand-alone Uranium PEA numbers as
previously reported. Following Cameco’s decision to shut down the
McArthur River uranium mine and Key Lake Mill, the supply/ demand
relationship of U3O8 is expected to be in deficit much earlier than
previously predicted."
Qualified PersonsMr. Grenvill Dunn, Pr Eng
(RSA), C Eng (UK), FIChE, MSAIMM, MSAIChE of Hydromet Pty Ltd, a
technical consultant to the Company, is a Qualified Person as
defined under National Instrument 43-101 Standards of Disclosure
for Mineral Projects, and has reviewed and approved the scientific
and technical information contained in this release.
About Plateau UraniumPlateau Uranium Inc. is a
Canadian uranium-lithium exploration and development company
focused on its properties on the Macusani Plateau in southeastern
Peru. The Company controls all reported uranium resources known in
Peru, significant and growing lithium resources and mineral
concessions covering over 91,000 hectares (910 km2) situated near
significant infrastructure. Plateau Uranium is listed on the TSX
Venture Exchange under the symbol 'PLU', quoted on OTCQB under the
symbol 'PLUUF' and on the Frankfurt Exchange under the symbol
'QG1'. The Company has 64,227,151 shares outstanding.
Forward Looking InformationThis news release
includes certain forward-looking statements concerning possible
expected results of exploration and future exploration activities.
Forward-looking statements are frequently identified by such words
as "may", "will", "plan", "expect", "anticipate", "estimate",
"intend" and similar words referring to future events and results.
Forward-looking statements are based on the current opinions and
expectations of management. All forward-looking information is
inherently uncertain and subject to a variety of assumptions, risks
and uncertainties, including risks and uncertainties relating to
the interpretation of drill results, the geology, grade and
continuity of mineral deposits; the possibility that any future
exploration, development or mining results will not be consistent
with our expectations; mining and development risks, including
risks related to accidents, equipment breakdowns, labour disputes
(including work stoppages and strikes) or other unanticipated
difficulties with or interruptions in exploration and development;
the potential for delays in exploration or development activities;
risks related to commodity price and foreign exchange rate
fluctuations; risks related to foreign operations; the cyclical
nature of the industry in which we operate; risks related to
failure to obtain adequate financing on a timely basis and on
acceptable terms or delays in obtaining governmental approvals;
risks related to environmental regulation and liability; political
and regulatory risks associated with mining and exploration; risks
related to the certainty of title to our properties; risks related
to the uncertain global economic environment; and other risks and
uncertainties related to our prospects, properties and business
strategy, as described in more detail in Plateau Uranium’s recent
securities filings available at www.sedar.com. Actual events or
results may differ materially from those projected in the
forward-looking statements and Plateau Uranium cautions against
placing undue reliance thereon. Neither Plateau Uranium nor its
management assume any obligation to revise or update these
forward-looking statements.
For more information please visit
www.plateauuranium.com.
Neither TSX Venture Exchange nor its Regulation
Services Provider (as that term is defined in the policies of the
TSX Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
For further information, please contact:
Plateau Uranium
Inc. |
Website: |
www.plateauuranium.com |
Ted O’Connor, CEO |
Facebook: |
www.facebook.com/plateauuranium/ |
+1-416-628-9600 |
Twitter: |
www.twitter.com/plateauuranium/ |
ted@plateauuranium.com |
|
|
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