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:: CMH Iron Ore Flotation
Pneumatic flotation technology comprises a small range of specialised non-mechanical devices. They are generally perceived to provide energy savings for fast-floating fine particulate separations. This, however, certainly does not define the limits of their application. Compañía Minera Huasco are currently installing one of the largest iron ore flotation plants in the world at their iron ore pellet plant, based on IMF pneumatic flotation technology from Maelgwyn Mineral Services.
The three stage plant will use six IMF45 pneumatic cells for silica and silicate removal from levels of more than 3% to 1.2%, while maintaining high iron recoveries. The high performance technology utilises fluid energy for operation, obviating the use of moving parts for mixing and dispersion. Each 4.5m diameter cell incorporates a ceramic DN300 multi-jet self-aspirator, hydraulic froth crowding and internal distribution systems. A microprocessor controls pump flow rates, recycles and levels in all cells. The plant will be commissioned by the end of this year.
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