Question

Give the principles of:

(i) Hydraulic washing

Answer 1

Hydraulic Washing

• The principle of hydraulic washing lies on the concept of specific gravity of substances.
• Gangue (impurities present in the Ore) is lighter while the metal ore particles are heavier.
• The mixture is washed with running water or agitated by water. The heavier metal particles settle down while the gangue (containing sand or clay) is washed away.