Question

What is the role of the rotating paddle in froth floatation?

(a) Enhances wettability of gangue particles

(b) Stabilizes the froth

(c) Draws in air causing frothing

(d) Enhances non-wettability of the ore particles

I had been asked this question by my school teacher while I was bunking the class.

I want to ask this question from Concentration of Ores in section General Principles and Processes of Isolation of Elements of Chemistry – Class 12

Answer 1

The correct option is (c) Draws in air causing frothing

The best explanation: In froth floatation process, the suspension of the powdered ore in water along with the collectors and froth stabilizers is violently agitated by the rotating paddle which draws in air, causing frothing.