Advances in gravity gold technology

Publisher Summary This chapter describes units, circuits, and strategies used to recover gold, that is either liberated or present in very high-grade gold particles, referred to as gravity-recoverable gold (GRG), as well as gold present in much lower grades in sulfidic particles, typically pyrite and arsenopyrite, that can in their own right be recovered by gravity. The use of centrifugal concentrators has resulted in increase in fine GRG reporting to gravity concentrates. Semi-continuous centrifugal concentrators recovering GRG, make up the bulk of gravity circuits today but with a heavy focus being turned to the more complex sulfide-associated (gold carriers), and hence to the continuous concentrate recovery devices, such as the InLine Pressure Jig, Falcon C and the Kelsey Jig.