May 9 2014
Dundee Sustainable Technologies Inc. ("DSTI" or the "Corporation"), the developer and owner of proprietary technologies to serve the natural resource sector with environmentally friendly procedures, is pleased to provide further information on its progress to date.
The Corporation has arranged a contract to process a High Grade Concentrate. After significant testing of both ore and concentrate received in November 2013 from a privately held gold mining company, DSTI has entered into an arrangement to process their materials once the demonstration plant becomes operational in mid-January 2015. Pursuant to this arrangement DSTI may at its option process up to 15 tonnes of their produced concentrate per day, provided such concentrate contains a minimum of 10 ounces of gold per tonne. As a result, up to 4,500 tonnes of concentrate (current values of +$15,000 per tonne) may be processed by DSTI, over a 12 month period, to begin after the demonstration phase of DSTI plant in Quebec is completed.
To date DSTI has obtained 25 patents in 19 countries for its technologies relating to the extraction of precious metals and base metals as well as the neutralization of arsenic and production of fertilizer. DSTI has 14 pending patent applications worldwide for its technologies, which include the ability to process gold concentrates without the use of cyanide.
The samples of concentrate and ore furnished to DSTI for testing in November 2013 were composed of gold, silver, copper, lead and zinc.
Initial testing on the concentrate achieved gold recoveries in excess of 97%, despite the presence of substantial base metals in the concentrate. For the successful processing, DSTI will receive a 50% interest in the net profits arising from the sales of the end products, net of mining, concentration, processing and transportation costs and expenses.
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.
Source: http://www.dundeetechnologies.com/