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MEI Online: Commodities: Metallic Ores: Gold: Latest News: September 29th 2010


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:: Gold Fields Invests in Python Technology

The Gold Fields metallurgical team has placed an order for a number of Gekko’s innovative processing systems with a view to achieving high gold extraction rates from existing surface dumps at Kloof Mine. The Kloof Growth Project is designed to achieve economic outcomes as well as pilot improved processes, flowsheets and technological options. Reduced operating costs, improved footprint and lower power consumption have all been targeted by this innovative project.

The surface dump material will be treated initially by optical sorting equipment, followed by a Python consisting of a two-stage crushing operation using a jaw crusher and vertical shaft impactors. The continuous gravity separation InLine Pressure Jig, combined with Outotec flotation will upgrade the product for treatment in the Gekko InLine Leach Reactor. The project reflects new flowsheet opportunities identified by intensive industry research and seeks to establish the potential for the system to operate underground in the future.

Power consumption in South Africa is a critical issue, both economically and politically, and the government has requested mining companies reduce their overall levels of power usage. Potentially, this pilot programme will assist Gold Fields to achieve this outcome. Ted da Silva, Head Metallurgist, Gold Fields, South Africa, said; “This exciting installation will accelerate the Gold Fields metallurgical structure and knowledge base with significant benefits being achieved for operating costs and the environment."


Left to right: Gekko South African Manager, Val Korzinski, Gold Fields (GFI Mining South Africa Pty Ltd) Senior Consultants, Derek Beytell and Ted da Silva, Gekko Technical Director, Sandy Gray, Gold Fields Kloof Metallurgical Manager, Ruan Vorster and Gekko R&D Manager, Tim Hughes.




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