Is there any method to separate two kinds of powder,?

Question

which has been mixed together, without any modifications?For example, when sugar and salt are mixed, how can we separate these two?

Answer 1

It depends on what you mean by "modifications." If the two types of powder have reliably different grain sizes, you can simply sift them apart, by using a grate with a fineness intermediate between the two powders; only the smaller grains will fall through. If one powder if magnetic and the other is not, a magnet could easily pull out the magnetic particles. I guess it might be a "modification," but you could also use a solvent that dissolves only one of the powders. Drain the mixture to be left with only the undissolved powder. It may be possible to regain the other powder by evaporating the solvent.

Answer 2

this is really simple process to perform
salt is inorganic
sugar is organic

add water and an organic solvent, maybe ethanol, to the powder, the salt will dissolve in the water, the sugar will dissolve in your organic solvent, mix really well, and then let them separate, the two solvents will separate according to their densities, but the salt and sugar will have separated with them, as mentioned above. After this occurs you can just remove one layer and then the other. Process usually occurs in a sep-funnel. may need to use drying agent to get rid of excess water in the organic layer. Otherwise, you can boil the solvent off and get the powders back, relatively unharmed.

Answer 3

there are many methods that can be used to separate two powders depending on the actual substances.
Sugar and salt are in fact VERY easy to separate.. put it in cold water - the salt dissolves leaving the sugar, then drain it off, and then evaporate the water to crystallise the salt.

Answer 4

Find a liquid that disolve one but not the other