The difference between the structure of the strong magnetic field magnetic separator and the weak magnetic separation machine

The magnetic system is the main part of the magnetic separator, magnetic separator performance is not only related to magnetic materials and magnetic characteristics, but also with the structure of the magnetic system has a great relationship.

弱磁场磁选机一般都设计为开放的磁系。它是由永磁磁块粘结迭合而成的磁极和底板以及磁矩组成。这是一个三极磁系，由于空气的磁阻较大，所以形成的磁场属于弱磁场。

Weak magnetic separators are generally designed to open the magnetic system. The magnetic pole and the base plate and the magnetic moment formed by the permanent magnet block are bonded together. This is a three pole magnetic system, due to the large magnetic resistance of the air, so the formation of the magnetic field is weak.

闭合磁系由于磁极间的空气隙小，容易产生强磁场。所以选别弱磁性矿物的强磁场磁选机都设计为闭合的磁系。为了进一步提高闭合磁系的磁场力，可以缩小空气隙，以此减小磁阻。但是这样做会使选别空间减小，使设备处理能力降低，所以目前多从改进磁极对的形式和它的几何尺寸，以及在两磁间放置导磁系数很高的聚磁介质来提高磁场力。如在两原磁极间放置一个整体的具有一定形状的感应介质（转辊、转锥或转盘）构成磁路，还可在原磁极之间放置多个具有一定形状的感应介质（齿板、球、柱或网等）构成磁路。

The closed magnetic system is easy to generate strong magnetic field due to the small air gap between the magnetic poles. So the strong magnetic field magnetic separation of the weak magnetic minerals is designed as a closed magnetic system. In order to further improve the magnetic field force of the closed magnetic system, the air gap can be reduced, thereby reducing the magnetic field of the magnetic field. But it will make the separation space decreases, reducing the equipment processing capacity, so the improvement of the magnetic pole from the form and its size, and placed in the two magnetic permeability between high magnetic media to improve magnetic force. Such as a whole has a certain shape of the induction medium in the two original pole (roller, cone or disc) constitute a magnetic circuit, can also be placed with a plurality of induction medium with a certain shape in the original pole (tooth plate, spherical and cylindrical or net) constitute a magnetic circuit.