The Semi-Batch (SB) Gravity Concentrator

In the typical Falcon tradition, the Falcon Model ‘SB’ series of concentrators has been engineered with simplicity of design, efficiency of use and maximisation of results.

Even when other gravity recovery processes prove unsuitable, Falcon Concentrators are able to recover ultra fine liberated particles and make high quality separations by utilizing a high gravitation field.

In some instances, a Falcon circuit can achieve as high as 80% of the overall plant production depending on the percentage of native metal present.

The Falcon Model ‘SB’ units work best for:

• Free gold, silver and platinum recovery.
• Grinding circuit cyclone u/f or feed.
• Cleaning concentrates.
• Tails scavenging.
• Placer and alluvial gold.

How it works.

The SB concentrator employs an elutriated retention zone at the top of the rotor, requiring the addition of a small volume of process water. The feed stream particles are subjected to gravitational forces of up to 200 G’s (recommended maximum) and are segregated according to effective specific gravity along the smooth spinning rotor wall. The heaviest layers pass over the concentrate bed retained in the riffles at the top of the rotor bowl.

The addition of fluidisation water from behind the riffle beds enable heavy target particles to migrate to the bottom or outside of the bed and be retained in preference to the lighter particles. The high G’s permit effective recovery of even very fine particles (below 10 microns) and the depth of the concentrate bed allows coarser particles in the feed stream to be safely recovered.