OVERVIEW

The Kalsaka Project included the design, fabrication and supply of the crushing, agglomeration and stacking equipment for the Gold Heap leach plant.

The design philosophy regarding the material handling sections, was to minimize the ore handling of the oxide material and as such a small ROM bin with a sloping grizzly feeding a MMD 600 sizer that provided a direct feed to the agglomeration drum (also the front end is designed to include a future secondary crushing circuit if required later based on recovery). The crushing plant was designed to accept ore of minus 1000mm, producing minus 150mm material. The crusher discharged onto a 750mm wide conveyor, which carried the ore to a screening and secondary crushing station and then via a second 750mm wide conveyor (cement addition was added prior to agglomeration on the conveyor) to the agglomeration drum. The agglomeration drum fed onto an overland conveyor to the stacking system detailed below

The plant was designed to handle a capacity of 167tph (dry) and a nominal peak capacity of 200 tph of minus 150mm material.

Proprietary equipment supply on the project included;

• 10 x Mobile Hopper Conveyors 600mm w x 35m l
• 1 x Mobile Transverse Conveyor 600mm w x 20 m l
• 1 x Mobile Stacker Feed Conveyor 750mm w x 38 m l
• 1 x Mobile Radial Stacker Conveyor 750mm w x 40m l
• Agglomeration drum 2.7m Ø x 9m l (c/w Feed & Discharge chutes, sprays, electrics lighting and free standing base.)

Commissioning was initiated in August 2008 and first Gold was poured in October 2008.