PHYSICAL BASIS FOR SEPARATIONS All separations are based on a difference in some property of the materials being separated. 9 Size[Particle sieving, sort by length or diameter, filtration/ ◆ Color/ sort be color/ ◆ Physical properties E vapor Pressure /Distillation, gas absorption, drying/ E Solubility/Crystallization/ E Magnetic Susceptibility Ferrous metal separation/ E Density Decantation, flotation, sedimentation/ 94/99 Separation Operations: Introduction9/4/99 Separation Operations: Introduction 7 PHYSICAL BASIS FOR SEPARATIONS All separations are based on a difference in some property of the materials being separated. u Size [Particle sieving, sort by length or diameter, filtration] u Color [Sort be color] u Physical Properties ð Vapor Pressure [Distillation, gas absorption, drying] ð Solubility [Crystallization] ð Magnetic Susceptibility [Ferrous metal separation] ð Density [Decantation, flotation, sedimentation]