Magnetic pulleys are used at the discharge point of the conveyor to separate tramp iron from the product moving on the conveyor belt. The pulley is particularly very useful in iron ore purification to ensure broader working field. Pulley is also used in conjunction with suspension magnet to efficiently control the tramp iron removal. Magnetic pulley can be manufactured using permanent magnets or electromagnetic pulley by using aluminum or copper coils. Electromagnetic coils of magnet are fully protected and sealed as these are normally used in open places and are subjected to varying atmospheric conditions. Magnetic pulleys are supplied complete with sealed bearing units on both sides and in diameter and length to suit individual requirements.