Alexander Mining PLC Lithium JV Research and Development Results (6671W)
April 18 2019 - 8:34AM
UK Regulatory
TIDMAXM
RNS Number : 6671W
Alexander Mining PLC
18 April 2019
18 April 2019
Alexander Mining plc
("Alexander" or the "Company")
Lithium Joint Venture Research and Development Final Results
Further to the announcement in December 2018 regarding the
larger scale testwork on the lithium heap leaching joint venture
("R&D JV") with Alexander's Principal Technological Consultant,
Dr. Nicholas Welham, the work has now been completed. The R&D
JV was a one-off proof of concept initiative, completely focused on
lithium and separate to Alexander's core AmmLeach(R) and
HyperLeach(R) intellectual property.
Four samples of different lithium minerals, spodumene, petalite,
lepidolite and zinnwaldite, were obtained from confidential
industry sources. A series of preliminary test work runs were made
which gave encouraging results for a small set of reagents. Further
runs were then made from which the two most promising reagents were
selected for a larger scale series of runs of longer duration.
The results from these runs showed that leaching of lithium from
all four minerals was achieved at ambient temperature and pressure.
However, the rates of dissolution of the lithium were lower than
required for the targeted heap leach. Of the minerals tested, only
zinnwaldite appears to have any promise for heap leaching using the
envisaged process.
No further work is planned at this stage. However, the Company
retains a keen interest in the lithium mining and processing sector
given its importance to the revolution in electric vehicles and
transportation currently well underway.
With growing evidence regarding the operational and economic
difficulties with brine type lithium extraction methods, such as
increased capital intensiveness, extended time to production,
production volume variances from evaporation rates, the processing
of lithium from hard rock resources has become a point of focus.
Accordingly, the use of heap leaching as a possible processing
method for the low-cost extraction of lithium remains of interest
to Alexander and it will continue to seek opportunities to use its
expertise in this area.
ENDS
For further information, please contact:
Martin Rosser
Chief Executive
Mobile: +44 (0) 7770 865 341
Alexander Mining plc
Tel: +44 (0) 20 7078 9566
Email: mail@alexandermining.com
Website: www.alexandermining.com
Cairn Financial Advisers LLP
Sandy Jamieson/James Caithie
Tel: +44 (0) 20 7213 0880
Turner Pope Investments (TPI) Ltd.
Andy Thacker
Tel: +44 (0) 20 3621 4120
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END
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