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  • State the principle involved in the following metallurgical processes: (a) Froth floation (b) Zone refining (c) Vapour phase refining      

State the principle involved in the following metallurgical processes:

(a) Froth floation

(b) Zone refining

(c) Vapour phase refining

 

 

 

 
 
 
 
 

Answers (1)

(a) Froth floation: It is used to seprate metal sulphide ore from the gangue. Metal sulphide ore frm the gangue. metal sulphide is wetted by oil and hence its non - wettability towards oil is enhanced by using collectors and hence the metal ore is seprated in the froth.

(b) Zone refining : Impurities are more soluble in the liquid state of metal compared to that in solid state. Hence, heating is used to create two zones one end with crystalizing soild and other end with liquified impurities that is later seprated.

(c) Vapour phase refining: The impure metal is converted into volatile phase and then compressed to obtain pure metal.

 

Posted by

Sumit Saini

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