Methods of separation are: decantation, filtration, sieving, electromagnetic, centrifugation, distillation, ion exchange, gravitational system, elutriation, radiometric sorting, zone refining, sublimation and many others.
Heating not; but distillation, sublimation, zone refinig, etc. need heat.
methods in separating
Paper chromatography is a method.
The simplest method is decantation.
Using the separating funnel method can be separated mixtures of liquids with different densities.
This metod is called filtration.
Gravity separating.
the method to separating chemical
By this method iron (being ferromagnetic) is extracted from mixtures.
chemistry
pick them out
The best method is distillation.