Alexander Mining PLC Zinc Silicate Patent Granted in Australia (5458I)
August 31 2016 - 5:36AM
UK Regulatory
TIDMAXM
RNS Number : 5458I
Alexander Mining PLC
31 August 2016
31 August 2016
Alexander Mining plc
("Alexander" or the "Company")
Method for Leaching Zinc Silicate Ores Patent Granted in
Australia
Alexander is pleased to report that it has received notification
that its MetaLeach Limited ("MetaLeach") subsidiary has been
granted a patent for a Method for Leaching Zinc Silicate Ores in
Australia, patent number 2013202214. The patent will remain in
force until 28 March 2033.
Martin Rosser, Chief Executive Officer, said: "The granting of
our Zinc Silicate Leaching Patent in Australia is most significant.
Zinc silicate mineralisation comprises a significant proportion of
non-sulphide zinc ores targeted for use by our AmmLeach(R) process
and this is the first patent to be granted for this particular
leaching method patent family."
The patent describes a method for leaching zinc from an ore,
comprising the method steps of: curing the zinc silicate ore to be
leached through the application of a low volume of an aqueous acid
solution having a pH of 0 or above, producing a cured zinc silicate
ore more amenable to leaching through the application of an
ammonium carbonate solution containing free ammonia; leaching the
cured ore at atmospheric pressure through the application of an
ammonium carbonate solution containing free ammonia, producing a
pregnant leach solution; and passing the pregnant leach solution to
a means for zinc recovery.
This announcement is inside information for the purposes of
Article 7 of EU Regulation 596/2014.
ENDS
Enquiries:
Alexander Mining plc Matt Sutcliffe
Martin Rosser Executive Chairman
Chief Executive Officer Mobile: +44 (0) 7887 930
Mobile: +44 (0) 7770 865 758
341
Email: mail@alexandermining.com
Website: www.alexandermining.com
Northland Capital Partners
Limited
Matthew Johnson / Gerry
Beaney
+44 (0) 20 3861 6625
(Corporate Finance)
John Howes / Abigail Wayne
(Corporate Broking)
This information is provided by RNS
The company news service from the London Stock Exchange
END
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