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MEI Online: Froth Flotation: Latest News: September 2nd 2005


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:: Largest-ever Flotation Cell, TankCell® -300, Launched in Australia

Outokumpu Technology has launched its largest-ever flotation cell, the TankCell® -300, for enhanced metal recoveries and operating efficiencies in mineral processing operations.

The 300m cell - believed to be the largest mechanical cell in the world - was launched by Outokumpu Technology at the Centenary of Flotation Symposium in Brisbane in June.

The TankCell® -300, with an approximate air feed of 16-31 m/min at 71 kPa shaft pressure, is the most recent and most powerful addition to the renowned TankCell® family. A total of more than 1000 TankCell® installations worldwide span sizes from 5m up to the previous largest, the 200m model. The 200m model operates at Zinifexs Century zinc mine and a train of ten 200m are to be commissioned shortly at the Cowal Gold project in NSW.

"Designed to meet ever-increasing demand for greater capacity on-site, the powerful 300m capacity means the TankCell® -300 can cope with a sites most demanding throughput, yet still deliver optimum concentrate grade and recovery level" said Mr Peter Bourke, Global Technology Manager - Flotation Process, for Outokumpu Technology.

"As the TankCell® is a customised design, this ensures mechanisms are optimised to match differing feeds, from ultrafines to coarse, and also varying froth characteristics" he added.

Mr Bourke says the TankCell® -300 brings economies of scale and the latest technology to the proven TankCell® design that has demonstrated the efficiency of its technology on a broad diversity of metals around the globe.

"Benefits of a single larger cell include lower capital cost, lower installation cost and a smaller footprint compared with two smaller tanks. The larger design also offers optimised froth stability for low grade ores, as well as ongoing savings from its lower air and power consumption and also lower maintenance costs compared with two smaller cells".

"Outokumpu TankCell® units are a flexible solution for diverse applications of rougher, scavenger and cleaner flotation. Having the widest range of cell sizes facilitates numerous production rates. Mixing, aeration and froth handling are designed case-by-case to best fit the feed material and individual application involved," said Mr Bourke.

Features of TankCell® technology include:

  • Customised design
  • Fast startup under full load
  • Easy operation and ability to run without sanding
  • Automatic air control
  • Optimum bubble size
  • Air dispersion independent of mixing
  • Optimised power draw




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