Sepro Leach Reactor

The Sepro Leach Reactor is a high yield processing solution designed to drastically improve mineral recovery from gravity concentrate. Combining long-term production value with low operating costs, the Sepro Leach Reactor is installed after concentration in a circuit to maximize gravity treated ore. Extensive test work of the Sepro Leach Reactor on site has shown over 99% of the target mineral is recovered through a simple, fully automated process that is easily incorporated into gold and silver recovery operations. Sepro Mineral Systems designs and supplies complete, customizable mineral recovery circuits incorporating leaching, gravity concentration, agglomeration, and electrowinning based on mining project requirements. Laboratory units are also available for agitated leach reactor testing which generate reliable data for scale-up to commercial operation. Pilot-scale machines are also supplied for field test purposes.


Sepro Leach Reactors are used primarily for the recovery and upgrading of gold from gravity concentrate. High concentration cyanide solution is used to dissolve the gold particles into solution. The gold can be recovered from solution by direct electrowinning or zinc precipitation as required. This yields a much higher mineral recovery than the conventional shaking table for polishing of gravity concentrates. Leaching kinetics are accelerated by adding oxygen and agitating the solids with a high solidity impeller. This allows high recoveries in a shorter time keeping the footprint small.