Question

In the Froth Floatation process, zinc sulphide and lead sulphide can be separated by _________.

• A. using depressant.
• B. Using collectors.
• C. adjusting the proportion of oil to water.
• D. using froth stabilizers.

Answer 1

Answer: (A), (C)

adjusting the proportion of oil to water.

$\bullet$ Froth floatation method is used to extract metal sulphide ore by the concentration of sulphide ores depresents$\left(NaCN\right)$ that from complex with $Zinc\left(N{a}_2\right[Zn\left(C{N}_4\right)\left]\right)$ and prevents it from the formal of

Option (A):

Collectors enhance the non-wettability of the mineral particles.

Option(B):

Zinc sulphide and lead sulphide can be separated by adjusting proportion of oil to water.

ption (C):

zinc sulphide and lead sulphide can be separated by adjusting proportion of oil to water or by using depressants. The depressant used is $NaCN$.

Option (D):

Using froth stabilisers we can stabilisers we can stabilige the froth.

So, the correct answer is options (B) and (C).