Dundee Sustainable Technologies Inc. Innovates in Nickel Extraction
May 23 2014 - 10:12AM
Marketwired Canada
Dundee Sustainable Technologies Inc. ("DSTI" or the "Corporation") (CSE:DST),
the developer and owner of proprietary technologies to serve the natural
resource sector with environmentally friendly procedures, is pleased to announce
an innovation in the nickel extraction.
The Corporation is pleased to report the successful application of its patented
proprietary process for nickel extraction from laterites for the production of
nickel sulfate. This new concept was applied on laterites from Guatemala, Cuba
and the United States, and achieved a nickel extraction ranging from 95% to 97%,
at ambient pressure and moderate temperature, over a short period of time.
This approach has greatly simplified the collection of nickel from laterites as
per the following table:
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DSTI Pressure leaching Ferro-nickel
---------------------------------------------------------------------------
Extraction Typically 95% Typically 95% Typically 80%
yield
---------------------------------------------------------------------------
Processing time 15 minutes Several hours Continuous
---------------------------------------------------------------------------
Pressure Atmospheric Pressurized Atmospheric
---------------------------------------------------------------------------
Temperature Ambiant Above 150 degrees C Above 1 000 degrees
C
---------------------------------------------------------------------------
Limitations No limit for MgO Low MgO content Limitation on MgO,
and SiO2 SiO2 and Al2O3
---------------------------------------------------------------------------
Environment Low impact Low impact Significant impact
high carbon oxides
emission
---------------------------------------------------------------------------
Capital costs Low Expensive Expensive arc
autoclaves furnace and
pressurized pelletizing
equipment equipment
---------------------------------------------------------------------------
Operation costs Low energy Autoclave Most costly nickel
dilute sulfuric maintenance, high (high energy
acid pressure oxygen, consumption)
concentrated
sulfuric acid
---------------------------------------------------------------------------
About Dundee Sustainable Technologies, a company controlled by Dundee Corporation
The cyanide and mercury free gold extraction process developed by DSTI, has been
recognized as a "green technology" for which DSTI has been awarded $5,700,000 in
grants to date for a demonstration plant, presently under construction in
Thetford Mines Quebec of which $700,000 has been provided by the Government of
Quebec and $5,000,000 by the Government of Canada through the Sustainable
Development Technology Fund. The plant is scheduled to go into operation in
mid-January 2015.
Over the last ten years DSTI has tested over 50 different gold deposits, both
oxide and sulfide ores at the lab level and at its pilot plant. These tests
have, consistently achieved gold recoveries in excess of 90%, using chlorination
instead of cyanide. In addition, the tailings from the process are inert from
toxic substances and as result meet environmental norms. An engineering study
completed within the last 12 months supports DSTI's claim of having operated a
pilot plant showing a gold extraction yield higher than 90% using a
closed-circuit chlorination process.
FORWARD LOOKING STATEMENTS: This press release contains forward-looking
statements that address future events and conditions, which are subject to
various risks and uncertainties. Actual results could differ materially from
those anticipated in such forward- looking statements as a result of numerous
factors, some of which may be beyond the Corporation's control. These factors
include: results of exploration activities, general market and industry
conditions, and other risks disclosed in the Corporation's filings with Canadian
Securities Regulators.
Forward-looking statements are based on the expectations and opinions of the
Corporation's management on the date the statements are made. The assumptions
used in the preparation of such statements, although considered reasonable at
the time of preparation, may prove to be imprecise and, as such, undue reliance
should not be placed on forward-looking statements. The Corporation expressly
disclaims any intention or obligation to update or revise any forward-looking
statements whether as a result of new information, future events or otherwise,
except as required by applicable law. Depending on exploration results and
available financing, the Corporation may at any point modify its work program.
The Canadian Securities Exchange has in no way passed upon the merits of the
proposed transaction and has neither approved nor disapproved the contents of
this press release.
FOR FURTHER INFORMATION PLEASE CONTACT:
Pierre Gauthier
President and CEO
(514) 866-6001 # 244
(514) 866-6193 (FAX)
info@dundeetechnologies.com
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