Magnetic circuit design of magnetic separator
published date: 2019/7/22
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PTMS magnetic separation
what is magnetic separation process?
First, the magnetic circuit This paper mainly introduces the magnetic circuit design of the magnetic separator. The closed loop through which the magnetic flux is concentrated becomes a magnetic circuit. The magnetic system of the magnetic separator needs to generate a magnetic field of a certain intensity, and requires that most of the magnetic flux in the magnetic field be concentrated through the sorting space. For this reason, a magnetic conductor in which a ferromagnetic substance is usually formed into a certain shape forms a magnetic circuit together with a sorting space. A coil is wound around a portion of the magnetic conductor, or the magnetic conductor surrounds the coil. Since the magnetic permeability of the ferromagnetic substance is much larger than that of air, most of the magnetic flux is concentrated in the path formed by the magnetic conductor. For the permanent magnet magnetic circuit, the energized coil of the above magnetic circuit is replaced with a permanent magnet. Although the magnetic circuit and circuit are similar in form, they are essentially different. The circuit is a closed loop composed of a metal conductor with a large electrical conductivity. All current flows in the conductor. The magnetic circuit is a closed loop composed of a magnetic conductor with a large magnetic permeability. Most of the magnetic flux is in the magnetic circuit. by.
Second, the magnetic resistance, magnetic permeability and magnetic circuit Ohm's law The current flowing through the conductor is called resistance. When the magnetic flux flows through the magnet and the air, it also receives the corresponding resistance, called magnetoresistance. Resistance refers to the various resistances that electrons are subjected to during the flow process, while magnetoresistance is not the resistance that is caused by the flow of a certain magnetic substance, but is caused by the resistance of the magnetic material in the magnetic pole rotation or the movement of the magnetic domain wall. Decreasing the degree of magnetization of the material corresponds to a decrease in magnetic flux and exhibits the presence of a similar magnetic resistance. Sometimes for the convenience of magnetic circuit calculation, the concept of magnetic conduction is also adopted. The magnetic permeability is the reciprocal of the magnetic resistance, that is: G=l/R m The magnitude of the magnetic resistance is proportional to the length of the magnetic circuit, and the cross-sectional area of the magnetic circuit Inverse ratio of magnetic permeability