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:: Dundee Sustainable Technologies Proceeds to Demonstration Phase With ENAMI Concentrate
Dundee Sustainable Technologies Inc. is pleased to announce that it has entered into an agreement with Empresa Nacional de Minerķa, Chile for the purchase of 125 tonnes of gold concentrate to be processed using DST's gold extraction technology. This is part of a phased approach established between DST and ENAMI with the objective of implementing a commercial processing facility, utilizing DST's patented technology, in Chile.
The Concentrate contains an estimated 115 g/tonne of gold, 9.0% copper and mercury content in excess of 600 g/tonne. This complex material is difficult to process using conventional processing methods without the associated environmental liabilities and metallurgical challenges. The Corporation was able, during its piloting campaign to remove 99.7% of the sulphide and 99.6% of the mercury content. The calcine material was then submitted to acid and water leaching where 99% of the copper was recovered as copper sulphate. DST's chlorination process that followed achieved a gold recovery of 98.8% and a final gold deposition over silica recovery of 99.8%.
This is yet another step forward for the Corporation in its strategy for the commercialization of its technologies worldwide.
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