A "hard method of separation" is not an expression in chemistry.
Using the separating funnel method can be separated mixtures of liquids with different densities.
There are several different ways and procedures of separating mixtures, though, some mixtures areirreversible, and can permanently be combined. A few ways of separating mixtures is through evaporation, filtration, sieving, gravity separation, distillation, condensation, froth flotation, magnetic separation, chromatography, and centrifuging (http://www.slideshare.net/brittgow/separating-mixtures-1247457). Also certain chemical reactions can separate mixtures, or create substances, i.e. acid+base=salt+water etc. (If this is no help I'm sorry just look up separating mixtures on Google).
Separating mixtures can help to reduce waste by allowing components to be reused or recycled. This reduces the amount of material that ends up in landfills or in the environment. Additionally, separating mixtures can help to prevent contamination of soil, water, and air by harmful substances.
Filtering Distillation Evaporation
Two mixtures can be seperated using evaporation cause they have diffrent boiling points.The process is call distillation,one mixture will boil and evaporate leaving the other in the flask.Therefore separating the two mixtures.
Using the separating funnel method can be separated mixtures of liquids with different densities.
Paper chromatography is a method.
By this method iron (being ferromagnetic) is extracted from mixtures.
Filtration is the best method.
This method is called paper chromatography.
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For example filtration, manual collection.
An insoluble solid can be separated by filtration from the liquid.
You think probable to a chromatographic method or to decantation.
that is the method that the method is a method
Chromatography
This is a very simple method to separate immiscible liquids with different densities.