Question

*Which of the following statements is correct about the role of substances added in the froth flotation process?*

1. Collectors enhance the non-wettability of the mineral particles.
2. Collectors enhance the non- wettability of gangue particles.
3. By using depressants in the process, two sulphide ores can be separated.
4. Froth stabilisers decrease wettability of gangue.​

Answer 1

Correct option is

Correct option isA

Correct option isACollectors enhance the non-wettability of ore particles

Correct option isACollectors enhance the non-wettability of ore particlesFroth floatation method is used for removing gangue from sulphide ores. In this process, a suspension of the powdered ore is made with water.

Correct option isACollectors enhance the non-wettability of ore particlesFroth floatation method is used for removing gangue from sulphide ores. In this process, a suspension of the powdered ore is made with water.Collectors and froth stabilizers are added to it. Collectors (e.g., pine oils, fatty acids, xanthates, etc.) enhance non-wettability of the mineral particles and froth stabilizers (e.g., cresols, aniline) stabilize the froth.

Correct option isACollectors enhance the non-wettability of ore particlesFroth floatation method is used for removing gangue from sulphide ores. In this process, a suspension of the powdered ore is made with water.Collectors and froth stabilizers are added to it. Collectors (e.g., pine oils, fatty acids, xanthates, etc.) enhance non-wettability of the mineral particles and froth stabilizers (e.g., cresols, aniline) stabilize the froth.The mineral particles become wet by oils while the gangue particles by water.