News 2014-09-11 10:03 ET - News Release
Mr. Pierre Gauthier reports
DUNDEE SUSTAINABLE TECHNOLOGIES INC. OBTAINS 96.1% GOLD RECOVERY FROM CONCENTRATE
Dundee Sustainable Technologies Inc. (DST) has released successful piloting results and obtained a 96.1-per-cent gold recovery on high-grade concentrate.
In May, 2014, DST received two concentrate samples totalling 1,300 kilograms from a privately held gold mining company. The samples were processed at DST's Thetford Mines facility using its patented cyanide-and-mercury-free gold extraction process.
SAMPLE NO. 1 COMPOSITION Au Ag As Ca Cu Fe Pb S2 Te Cd Zn (g/t) (g/t) (%) (%) (%) (%) (%) (%) (g/t) (%) (%) 382 804 0.16 0.23 1.48 25.1 18.1 32.6 59 0.12 9.71
A two-hour contact time, using DST's chlorination process, was necessary to achieve a gold extraction yield of 96.1 per cent in the reactor, despite the presence of substantial base metals in the concentrate. The gold was recovered on silica with an efficiency of 99 per cent. The gold-loaded silica was melted to produce the gold bullion.
DST has entered into an arrangement to process material once the demonstration plant becomes operational in mid-January, 2015. Pursuant to this arrangement, DST may, at its option, process up to 15 tonnes of its 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 over $15,000 per tonne) may be processed by DST, over a 12-month period, during which DST will receive a 50-per-cent interest in the net profits arising from the sales of the end products, net of mining, concentration, processing and transportation costs and expenses.
Subsequently and providing that both parties are satisfied with the results of the processing, the parties can discuss the feasibility of implementing a DST-designed cyanide-and-mercury-free extraction plant on the property on terms to be negotiated by the parties.
We seek Safe Harbor.