December 2017 saw the successful commissioning of the turnkey gravity circuit installation (gravity box) at EMR Golden Grove. The circuit was designed, installed and successfully commissioned by the Gekko technical services team in close collaboration with EMR Golden Grove teams through late November and early December 2017 and in the process met a critical mine schedule which had high grade gold ore hitting the plant immediately post commissioning.
The gravity circuit comprises Gekko Systems unique dual Mag-Screen technology and an SB2500 concentrator. Mag-Screen in this instance was key to the success of the process flow sheet given the requirement to maximise gravity concentrate mass yield, remove iron magnetics from the final Zn concentrate product as well as aid the 70m long pumping duty to have gravity gold concentrate reporting to the Zn concentrate thickener.
“The Gekko team displayed professionalism throughout the process both in the circuit installation and commissioning, demonstrating an ability to work safely and productively. Importantly they were able to deliver on their promises and demonstrated a very strong willingness to work collaboratively with Golden Grove site teams” EMR Golden Grove Processing Manager, John Burgess
Technical performance of the circuit has been pleasing both during and post commissioning with gravity recoveries ranging between 20% and 45% from gold head grades between ~1g/t and ~4g/t. Significantly objectives set prior to project execution were achieved with gold recoveries up by over 11%. Gekko acknowledge the great support received on site throughout the process by project manager Michael Hogan and EMR automation, operations and maintenance teams.
For more information about Gekko’s Gravity Box Package, contact Tim Bell, [email protected]