which among these is not used as a refining process in Metallurgy ? liquation , polling , distillation , froth flotation
Answers
froth flotation....
Hope it help you
Refining of Metals
In metallurgy refining of metals is the final process. Once the extraction process is complete we must ensure that the metal is free of any impurities.
If you remember we have done a similar process before of removing impurities during concentration of ores.
However, in the refining process, the chemical composition of the metal will remain unchanged.
There are various ways to make a metal pure.
Which refining method is to be chosen will depend on the physical and chemical properties of a particular metal.
Let us explore a few common methods of refining of metals.
Distillation
Certain metals such as Zinc and Mercury have a very low boiling point.
So on heating them they very readily vaporize.
And of course, they leave behind their impurities.
The impure metal is heated beyond its melting point in a furnace and the vapors are reconverted to metals once the impurities are separated.