Question

Explain different methods of concentration of ores.Answer the given question in detail.

Answer 1

1) Electromagnetic process:--
The pulverised ore is placed on a conveyor belt. The magnetic particles are attracted to the magnetic wheel and falls separately apart from the non-magnetic particles.

2)Froath Floatation Process:--
This is generally applied for sulphide ores. The ore is taken in a large tank containing oil and water and agitated with a current of compressed air. The ore is wetted by the oil and separates from the gangue in the form of Froath.

3) Gravity Separation:---
The ore is poured over a vibrating slope table with grooves and a jet of water is allowed to flow over it. The denser ore particles settle down in the grooves

Answer 2

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