Flotation Lab2009 - EMA 3080C Fall 2009 Flotation...

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EMA 3080C Fall 2009 Flotation INTRODUCTION Particle separation and selection are key steps in many materials processing operations including recycling and mining. In recycling operations, raw materials often arrive mixed. Soda bottle caps and safety rings are polypropylene (PP), the bottle is polyethylene terephthalate (PET), and the cap gasket is sometimes polyvinyl chloride (PVC); all need to be separated, especially PVC from PET. When ore is mined from the earth, the desired phase must be removed from the gangue (all the rest of the stuff you dig up with no economic value). Most mining operations involve grinding and milling steps to liberate desired material from an aggregate (a mixture of desired phase(s) and gangue). Once aggregates are ground such that all desired materials are liberated from the gangue, various material dependent techniques are used to separate the phases. Particle size is a convenient method for separation. Grinding and milling operations can produce particles of various sizes. Sieves with progressively smaller line
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This note was uploaded on 11/16/2011 for the course EMA 3080 taught by Professor Bourne during the Fall '10 term at University of Florida.

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Flotation Lab2009 - EMA 3080C Fall 2009 Flotation...

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