Abstract
There are many different processes for the separation of ultrafine mineral particles by hydrophobic aggregation methods. All of them have the same basic characteristics, as follows: (a) selective hydrophobicization of particle surfaces and the formation of hydrophobic aggregates; (b) the intensification by nonpolar oils and (c) the high energy consumption due to agitation. In this paper, the above three characteristics are discussed based on our experiment results. On the basis of the hydrophobic interaction theory, proposed in the light of modern theory concerning water structure and surface forces, the machanism of hydrophobic aggregation is explained satisfactorily.
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