ORE SORTING AND GRAVITY correctly. Furthermore there is an emergency overflow output under the NoBLOCK Screen in case slurry in excess of the rated capacity flow is fed.
Gekko gravity plants
Gekko Systems has completed another project for Gold Fields. This time, Gekko assisted with the manufacturing, installation and commissioning of a complete gravity and concentrate treatment circuit at the Granny Smith gold mine 720 km northeast of Perth, Western Australia. Granny Smith, acquired by Gold Fields in October 2013, now recovers about 35 % of its total gold output from the gravity circuit alone, which is well above predicted levels from the test work and modelling stage.
Gold Fields Australia’ s Vice President of Operations, Stuart Mathews, commented,“ Gekko has delivered the gravity project for Granny Smith in a timely and professional manner; the results have been particularly pleasing.”
In addition to the latest model InLine Leach Reactor( ILR3000BA), Gekko’ s fully engineered turnkey‘ gravity box’ design solution included OEM horizontal vibrating screens, two 40” Knelson concentrators and associated electrical and piping distribution.
Apart from the capital work, Gekko also provided complete project management, including metallurgical test work, gravity recoverable gold modelling, design and engineering, installation services and process commissioning.
In Laos, Gekko is involved with the world’ s largest gravity circuit. It supplied and installed two large batch automatic ILR10000 units at Phonesack Group’ s Nampan project. The units have the capacity to treat up to 40 t / d of concentrate.
Canadian-based mineral exploration company, TMAC Resources, engaged the expertise of Gekko Systems for its project in Hope Bay, Nunavut in Canada. Situated within the Arctic Circle, the remote location and extreme conditions of this mine site made Gekko’ s turnkey solutions a good fit for this project. TMAC’ s processing plant will be delivered in two stages. The first stage is scheduled for delivery in mid-2016 and includes a Python plant able to treat 1,000 t / d of ore with a back end circuit and the
®
RIEGL
VZ-4000
Very Long Range 3D Terrestrial Laser Scanner with Online Waveform Processing
RIEGL ®
VZ-4000
3D Terrestrial Laser Scanner
With the RIEGL VZ-4000 Laser Scanner and specifically designed software packages, RIEGL provides a perfect solution for the demanding fieldwork in open pit mining and topography.
| up to 4,000 m range | eyesafe Laser Class 1 | accuracy 15 mm, precision 10 mm | Laser Pulse Repetition Rate up to 300 kHz( 222,000 meas./ sec) | multiple target capability | multiple-time-around( MTA) processing | full waveform export capability( optional) | built-in camera, on-board inclination sensors, GPS receiver and compass integrated, external GNSS receiver( optional) | stand-alone operation
Meet us at
Euro Mine Expo 2016 June 14-16 | Skellefteå, Sweden Booth 210, Hall Copper
Simple gravity plants still have a very important role. One that started production in March is Havilah Resources’ Portia gold mine in Western Australia. Here a 120 t / h trommel, log washer and attritioning circuit washes silty clay material that contains the free coarse gold. This reports to a fully automated dual system of Knelson concentrators( shown here) that can efficiently recover gold over a wide size range, including very fine gold, not included in the current resource
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MAY 2016 | International Mining 25