Briefly explain any three methods for the refining of metals.

(i) Distillation – in order to obtain the pure metal as a distillate, the impure metal block is evaporated. This method can be used for metals with low boiling points such as zinc or mercury.

(ii) Liquation – Metals with low boiling points are made to flow on a sloped surface, thereby separating them from the impurities which have higher boiling points. Example: Tin can be refined via this method.

(iii) Zone Refining – the principle of this method is that impurities are more soluble in their melt state when compared to the corresponding solid-state. A mobile heater moves along the metal block/rod and the impurities move along with it. Eg: Silicon and Germanium are generally purified via this method.

Was this answer helpful?

  
   

2.5 (1)

Upvote (3)

Choose An Option That Best Describes Your Problem

Thank you. Your Feedback will Help us Serve you better.

Leave a Comment

Your Mobile number and Email id will not be published. Required fields are marked *

*

*

BOOK

Free Class

Ask
Question