Isolation Of Elements

A mixture of PbS and PbO undergoes self-reduction to produce Pb and SO₂

In the extraction process of copper from copper pyrites, silica is added to produce copper silicate.

Partial oxidation of sulphide ore of copper by roasting, followed by self-reduction produces blister copper.

In cyanide process, zinc powder is utilized to precipitate gold from Na[Au(CN)₂]