Question

indicate the principle behind the method used for refining of zinc​

Answer 1

principle of chemistry is used

Answer 2

Zinc is in the middle reactivity series.so it can be only found in the form of carbonates or sulphide.If it's found in sulphide use roasting or else if it is found in carbonates then use calcination.Later the metal is in oxide form use simple heating to remove oxide and to get the metal.Now use the process of electrolysis for complete refining of the metal.