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MEI Online: Control & Instrumentation: Latest News: September 29th 2010


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:: Hawk Measurement Develops Transmitters for Flotation Cells

Hawk Measurement Solutions has developed a method of monitoring flotation cell performance using acoustic wave transmitters.

Three transmitters combine to monitor the height and density of a cell's froth layer, as well as the height of the chemical pulp.

The pulp is used to separate the minerals from treated ore slurries so they can be carried by compressed air to the surface of the cell. Once they are floating on the surface, the minerals will concentrate in a layer of froth. This froth will eventually overflow into reservoirs around the exterior of the cell called launders.

The height and density of the froth and the height of the pulp therefore need to remain at certain levels so the material always overflows. These parameters can have a major impact on the performance and therefore profitability of a flotation cell, the company said.




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