Question

(i) Write the principle of Zone refining. 

(ii) What is the role of collectors in froth floatation process? Give an example of a collector. 

(iii) Write the name of a reducing agent to abtain Fe from Fe₂O₃ at low temperafure.

Answer 1

(i) Zone Refining- Impurities are more soluble in the melt moltan state in the solid metal.

(ii) Collectors enhance non-wettability of the mineral particles ex. pine oil/fatty acids.

(iii) Carbon monoxide (CO).