Question

Froth floatation can be applied to non-sulphide ores.

• A. True
• B. False

Answer 1

The correct option is A

True

The underlying principle behind the process is differential wettability of ore and matrix. In other words, if by adding suitable reagents, ore and gangue can be wetted differentially, then this method can be applied to non-sulphide ores as well.

For example,

The activator $N{a}_{2}S$ is added to Malachite $CuC{O}_3.Cu(OH{)}_2$ so that a coating of $CuS$ is formed around ore particles, such that the ore is now conducive for froth floatation. $N{a}_{2}S$ can also be added to anglesite $PbS{O}_4$ so that the ore can be dressed using froth floatation.