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:: Record TankCell for Century
Outokumpu Technology, a subsidiary of the Finnish-based metals and technology group Outokumpu Oyj, plans to provide a 200 m3 flotation TankCell® for the Century zinc mine, operated by Pasminco Ltd, in northwestern Queensland.
Outokumpu believes that the unit will be the world's largest mechanical cell. It is the latest in a series ofTankCells being installed at Century. The TankCell will be built at Perth by JV Engineering, and installed by Bechtel Engineering Services.
The new unit is scheduled to be installed in September of this year to provide additional capacity on the zinc scavenger circuit, where there is a series of 100 m3 TankCells already installed. The additional flotation capacity will allow the pulp density to be reduced without decreasing the residence time, which will improve the rejection of silica in the primary zinc circuit.
According to Andrew Okely, systems sales manager - mineral processing for Outokumpu Technology, the larger cell offers savings in both capital and operating costs compared with two units of half its capacity. Furthermore, the larger unit has a smaller 'footprint' than two of the smaller ones, thus saving space in the processing plant.
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