22-8-2006

A whole new concept of minimal energy input to enhance gravity recovery has arrived. Taking advantage of natural alluvial horizons and rubble beds, the concept of high efficiency autogenous scrubbing is applied to liberate and clean target minerals including gold, tantalite, chromite and others.

Developed by Peacocke & Simpson and marketed throughout the region by Small Mining Supplies, the new design scrubbers incorporate  box-frame structures for lightness, strength and easy location on site.  The drive system has been simplified and uprated to make for smooth, quiet operation that incorporates fail-safe features.  Most scrubber designs are roller supported, making an absolutely level site essential, but the new RG design departs from this making it far easier to set up. In fact, formal foundations are not even necessary for the RG60, which can simply be placed on firm ground.
The RG60 has a nominal capacity of 4-6 tph and the larger RG150 15-20 tph.

The RG series scrubbers incorporate a novel autogenous action to result in the retention of rock load to disintegrate even the most stubborn clays. Schist and decomposed rock also make ideal feed, and in this case a degree of breakage and grinding takes place. The drum is large in diameter by comparison with conventional scrubbers of like nameplate capacity, but this was found to be absolutely essential to deal with African materials.

The light-weight construction coupled with the efficient action has resulted in extremely low power requirements of 5.5kW for the RG60 and 11kW for the RG150. This equates to about 1kWH/tonne processed as compared with about 14kWH/tonne for conventional milling! Even with the rest of the process module requirements, the overall power is minimal and well within the realms of power generation, a prime consideration for remote locations.  

Peacocke & Simpson operate a comprehensive testing laboratory to assess candidate materials and thus design the appropriate module.  Ongoing support is also available to support the installations and maintain metallurgical efficiency.