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Patent Granted for Method for Ammoniacal Leaching

5 Mar 2012 09:03

RNS Number : 6639Y
Alexander Mining PLC
05 March 2012
 



Alexander Mining plc

('Alexander' or the 'Company')

Patent Granted in Democratic Republic of the Congo for Method for Ammoniacal Leaching

Alexander is pleased to report that it has received notification from the Ministry of Industry of the Democratic Republic of the Congo ("DRC") that its MetaLeach Limited ("MetaLeach") subsidiary has been granted a Patent for a Method of Ammoniacal Leaching, patent number 2010/3993. The patent has a standard term of twenty years from the effective date of 11 July 2008 (being the date of original filing).

The patent is based on the counterpart South African patent, which was granted in 2010 and claims improved methods for ammoniacal leaching. The DRC patent is directed to improved methods for leaching one or more target metals from an ore, utilising an ammoniacal media. The method(s) comprises the steps of: curing the ore to be leached through the application of an aqueous solution of a curing agent, producing a cured ore; 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 metals recovery.

 

Martin Rosser, Chief Executive Officer, said: "The grant of a patent in the DRC for a Method for Ammoniacal Leaching is excellent news given the major opportunity for the commercial use of our AmmLeach® technology in the country to process copper and cobalt oxide deposits. The new patent is core to our portfolio of patents and patent applications designed to protect the Company's development of unique intellectual property and inventions."

Forward Looking Statements

This news release may contain forward looking statements, being statements which are not historical facts, including, without limitation, statements regarding potential mineralization, exploration results, resource or reserve estimates, anticipated production or results, sales, revenues, costs, "best-efforts" financings or discussions of future plans and objectives. There can be no assurance that such statements will prove accurate. Such statements are necessarily based upon a number of estimates and assumptions that are subject to numerous risks and uncertainties that could cause actual results and future events to differ materially from those anticipated or projected. Important factors that could cause actual results to differ materially from the Company's expectations are in Company documents filed from time to time with the TSX Venture Exchange and provincial securities regulators, most of which are available at www.sedar.com. The Company disclaims any intention or obligation to revise or update such statements unless required by law.

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.

ENDS

 

For further information please contact: 

Martin Rosser Matt Sutcliffe

Chief Executive Officer Executive Chairman

Mobile: + 44 (0) 7770 865 341 Mobile: +44 (0) 7887 930 758

 

Alexander Mining plc

1st Floor

35 Piccadilly

London

W1J 0DW

Tel: +44 (0) 20 7292 1300

Fax: +44 (0) 20 7292 1313

Email: mail@alexandermining.com

Website: www.alexandermining.com

 

Nominated Advisor and Broker

Ambrian Partners Limited

Samantha Harrison / Jen Boorer

+44 (0) 20 7634 4700

 

Joint Broker

XCAP Securities plc

John Grant / Karen Kelly / Adrian Kirk

+44 (0) 20 7101 7070

 

Public/Media Relations

Britton Financial PR

Tim Blackstone

+44 (0) 20 7242 9786

 

This information is provided by RNS
The company news service from the London Stock Exchange
 
END
 
 
MSCEANDSEEAAEEF
Date   Source Headline
8th Nov 20079:49 amRNSHolding(s) in Company
6th Nov 20074:01 pmRNSHolding(s) in Company
29th Oct 20075:10 pmRNSHolding(s) in Company
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19th Sep 20073:59 pmRNSHolding(s) in Company
18th Sep 20077:03 amRNSCorporate Update
18th Sep 20077:01 amRNSInterim Results
1st Aug 20079:46 amRNSRule 26 compliance
27th Jul 20077:00 amRNSNew leaching technology
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20th Jul 20073:45 pmRNSHolding(s) in Company
13th Jul 20076:09 pmRNSHolding(s) in Company
9th Jul 20071:09 pmRNSOperations Update
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15th Dec 20067:58 amRNSTotal Voting Rights
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22nd Sep 20067:00 amRNSInterim Results
15th Sep 20067:31 amRNSLeon Project Update
1st Aug 20067:00 amRNSDirectorate Change
18th Jul 20067:30 amRNSOperations Update
12th May 20063:38 pmRNSHolding(s) in Company
10th May 20067:00 amRNSUpdate on Leon Project
3rd May 20068:00 amRNSChange of Adviser
27th Apr 20062:12 pmRNSResult of AGM
12th Apr 20069:46 amRNSDirectorate Change
17th Mar 20068:28 amRNSUpdate on Peru gold project
15th Mar 20068:02 amRNSFinal Results
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22nd Nov 20054:54 pmRNSBoard Appointment
18th Nov 20059:48 amRNSPeru Progress Report
17th Oct 20059:52 amRNSDrilling Begins at Rachaite
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1st Aug 200511:17 amRNSDrilling Report

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