Question

define refining of metals.....

Answer 1

Answer:

In metallurgy, refining consists of purifying an impure metal. It is to be distinguished from other processes such as smelting and calcining in that those two involve a chemical change to the raw material, whereas in refining, the final material is usually identical chemically to the original one, only it is purer.

Answer 2

Refining of metals

It is the separation of the above extracted metals from the residual impurity such as:

1)The presence of other metals and non metals like silicon and phosphorus.

2)Unreduced oxides and sulphides of the metal.

Note:Refining is the process by which crude metal is purified.

The method of purification used depend upon:-

a) Nature of metal.

b) Nature of the impurities present

in the metal.

c) Purpose for which the metal is to be used.

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