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MEI Online: Plant Operation News: Australasia: April 11th 2007


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:: Outokumpu Technology to Deliver World's Largest Flotation Cell, TankCell®-300, for OceanaGold, New Zealand

Outokumpu Technology has agreed the delivery of three TankCell®-300 flotation cells ( see www.min-eng.com/frothflotation/43) to OceanaGold's Macraes operation in New Zealand. TankCell®-300, with an active capacity of over 300m3, is the largest mechanical flotation cell in the world. The Macraes delivery will be the first such installation and represents a significant development for flotation technology in general.

Outokumpu Technology will provide the complete flotation circuit at Macraes and is responsible for the design, supply, installation and commissioning of the three cells, with completion scheduled for mid 2007.

OceanaGold's Macraes mine is New Zealand's largest producer of gold, with the annual capacity to process 6 million tonnes. A single train configuration of 1/1/1 TankCell®-300s, combined with two existing TankCell®-150s, will replace the site's original three trains of column flotation, representing a significant reduction not only in footprint, but also in operational costs such as maintenance and spare parts. The larger TankCell® design also offers optimized froth stability for low-grade ores, as well as ongoing savings from lower air and power consumption.

The TankCell®-300 units at Macraes will also feature the latest field-proven and patented FloatForceTM mixing technologies developed by Outokumpu Technology.

In the past ten years alone, Outokumpu Technology has installed a total of more than 1600 TankCell® units globally including the world's largest single train of flotation cells by volume, 10 x 200m3, installed in 2006 in Australia.




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