Question

Write short notes on levigation.

Answer 1

1. Levigation is a process used for the concentration of ores.
2. It involves washing the powdered ore with a current of water.
3. The principle is based on the difference in specific gravities of ore particles and gangue particles.
4. The lighter impurities or gangue particles are washed away by water.
5. The heavier ore particles remain behind as concentrated ore.
6. This method is also called hydraulic washing or gravity separation.
7. It is generally used for the concentration of oxide ores.
8. This concise process helps in separating lighter impurities from heavier ore particles effectively.