Question

name the process used for the concentration of zinc blende

Answer 1

The pure form of zinc can be obtained by processing the zinc blende, which is the crystalline form of zinc sulphide (ZnS) that is also known as sphalerite. The concentration of this zinc blende is the first step that is taken for obtaining zinc from this chemical compound.

The froth flotation method is applied for concentrating the zinc blend and it is thoroughly mixed with pine oil and water, which are kept in a large tank. Then the compressed air is directed to this mixture by passing it through a pipe, resulting in the creation of froth.

All the impure substances present with the zinc blend subsides within this liquid, while the concentrated zinc blend is found to be floating on the surface of the froth.