Published: September 13, 2016 |

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Dundee Sustainable Technologies Inc. (DST) has successfully completed a piloting program with an international gold mining company. The program demonstrated the technical feasibility of integrating DST proprietary arsenic stabilization technology into the miner’s operations.

DST Technology is designed for the sequestration of arsenic in a stable glass form. During the course of the piloting program, DST reached optimal processing conditions for the successful vitrification of arsenical matter provided by the miner. Several piloting runs allowed for arsenical material to be processed and to generate 670 kg of vitrified arsenical matter. The program demonstrated the stability of the produced glass, which contained up to 20.4 percent arsenic, by passing the United States Environmental Protection Agency’s toxicity characterization leaching procedure with 2.09 mg of arsenic per liter (limit of 5 mg/L).

The program is part of a two-phase approach aimed, in a first phase, at confirming, at the pilot plant scale, that the DST Technology can be successfully implemented on material provided by the miner for arsenic stabilization. In a second phase, a study may be performed, at the pre-feasibility level, to evaluate the technical and economic implications of a full-scale DST arsenic stabilization plant located at the site of the miner’s operation.

DST Technology produces a more stable product than current industrial practices with competitive cost in terms of reagent and energy consumption when compared with the stabilization of arsenic by hydrated iron arsenate (scorodite). DST Technology is opening new opportunities for deposits or concentrates considered to contain too much arsenic to be exploited using conventional approaches.

These successful results constitute a major milestone in DST’s efforts to implement its arsenic stabilization technology on an industrial scale.

About Dundee Sustainable Technologies
The corporation is engaged in the development of environment-friendly technologies for the treatment of materials in the mining industry. Through the development of patented, proprietary processes, Dundee Sustainable Technologies extracts precious and base metals from ores, concentrates and tailings, while stabilizing contaminants such as arsenic, which could not otherwise be extracted or stabilized with conventional processes because of metallurgical issues or environmental considerations.

To stop by Dundee Sustainable Technologies’ website, CLICK HERE

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