Gold extraction without cyanide

Proprietary gold extraction process

Dundee Sustainable Technologies offers a cleaner, efficient, and cost-effective alternative for extracting gold. This gold extraction process uses no cyanide and produces no toxic liquid or gaseous effluents. Solid residues remain inert, stable, and non-acid generating.

The novel CLEVR Process^TM chemical approach solubilises gold much faster than traditional gold recovery circuits, slashing contact times from 36+ hours to 2 hours. The process is closed-loop, which entails that all reagents are re-circulated, eliminating the need for tailings ponds, mitigating failure risks and environmental impact.

Increases gold recovery
Fast reaction time (2 hours)
Handles base materials, like Cu and ZN
Treats refractory ores (Py, Aspy, Te, C)

How our gold recovery process works

The CLEVR Process uses sodium hypochlorite — NOT chlorine gas—with a catalytic amount of sodium hypobromite in acidic conditions to put the gold into solution. Contact time is short, and the process operates in a fully closed loop. All chemicals are recycled within the circuit and, if needed, sea water may also be used.