Most naturally occurring fine particles, such as those produced at an aggregate operation, have a negative surface charge. This charge sets up repulsion forces that reduce the tendency for the particles to agglomerate and settle. However, other factors such as particle size, particle density, and liquid density also exert considerable influence on the tendency of fine particles to settle. The “art” of flocculation and coagulation has a lot more “science” than meets the eye. A variety of flocculants and coagulants is available, with different chemistries, molecular weights, charge ratios, and other attributes. It is critical that the appropriate flocculant and/or coagulant be chosen to ensure cost effective performance in a solids/liquid separation process Click Here For Complete Overview Text
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