Draw a neat and labelled diagram
Magnetic separation method

Explanation

Magnetic separation method : Electromagnetic machine is used in this method. The main parts of this machine are two types of iron rollers and the conveyor belt continuously moving around them. One of the roller is nonmagnetic while the other is electromagnetic The conveyor belt moving around the rollers is made up of leather or brass (nonmagnetic). The powdered ore is poured at that end of the conveyor belt which is on the side of the nonmagnetic roller. Two collector vessels are placed below the magnetic roller. The particles of the nonmagnetic part in the ore are not attracted towards the magnetic roller. Therefore, they are carried out further along the belt and fall in the collector vessel which is away from the magnetic roller. Simultaneously the particles of the magnetic ingredients of the ore stick to the magnetic roller and therefore fall in the collector vessel near the belt.

In this way the magnetic and nonmagnetic particles in the ore are separted because of their magnetic nature. For example. cassiterite is a tin ore. It contains mainly the nonmagnetic ingredient stannic oxide `(SnO_(2))` and the magnetic ingredient ferrus tungstate `(FeWO_(4))` These are separated by the electromagnetic method.