Explain the role of the following : 

(a) CO in the refining of Ni.

(b) Limestone in the metallurgy of Fe.

(c) Depressant in the froth floatation method

 

 

 
 
 
 
 

Answers (1)

(a) CO converts Ni into its volatile compound, Ni(CO)4  in the refining of Ni.

(b) Limestone in the metallurgy of Fe provides flux to remove impurities

(c) Depressant in the froth floatation method selectively prevents one of the sulphide ore from coming to the froth

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