The Difference Between Closed Magnetic System And Open Magnetic System
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The Difference Between Closed Magnetic System And Open Magnetic System

The magnetic field of magnetic separator has strong and weak type. The magnetic separator with weak magnetic field mainly adopts open magnetic system. And the magnetic separator with strong magnetic field mainly adopts closed magnetic system. 
Open magnetic system has no ferromagnet among magnetic poles. The radial magnetic system of the drum type magnetic separator, the column-like magnetic system of the dehumidifying tank, and the plane magnetic system of the belt type magnetic separator are all open magnetic systems. 
The selected gap of the closed magnetic system is the single layer or multi-layer. But the gap is very small, so the magnetic flux is generally straight. The resistance is small, and the magnetic flux is more concentrated with magnetic flux density and high magnetic field strength.
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