At present, there are many types of magnetic separators used at home and abroad, and the classification methods are different.
(l) According to the magnetic source of the magnetic separator, it can be divided into a permanent magnet magnetic separator and an electromagnetic magnetic separator;
(2) According to the strength of the magnetic field can be divided into:
(1) Weak magnetic field magnetic separator, the magnetic field strength of the magnetic pole surface is H0=72-136 kA/m,
Magnetic field force HgradH=(2.5~5.0)x1011A2/m3.
(2) Medium magnetic field magnetic separator, magnetic field surface magnetic field strength H. =160~480 kA/m;
(3) Strong magnetic field magnetic separator, magnetic field surface magnetic field strength H. =480 ~ 1600 kA l m,
Magnetic force HgradH=(1.5~6.0)x1013A2/m3;
(3) The medium according to the sorting process can be divided into a dry magnetic separator and a wet magnetic separator;
(4) According to the type of magnetic field, it can be divided into constant magnetic field, pulsating magnetic field and alternating magnetic field magnetic separator;
(5) According to the outline structure of the machine, it is divided into belt magnetic separator, cylinder magnetic separator, roller magnetic separator, disc magnetic separator, ring magnetic separator, cage magnetic separator and pulley magnetic separator. .
Among them, the magnetic field strength, the selection medium and the structure type are mainly distinguished. Weak magnetic separator mainly used for sorting ferromagnetic minerals, magnetic iron ore, titanium magnetite, ferrosilicon. In the past, the industrial is mostly electromagnetic magnetic system, and the shape of the body is mostly tubular and belt type. At present, most of them are permanent magnet magnetic systems and cylindrical shapes, and are widely used in wet applications. In the past domestic and strong magnetic separator aspect mainly dry high intensity magnetic separator for sorting coarse grain size sorting nonferrous metals and rare minerals. In the past ten years, in order to select weak magnetic minerals with low grade, fine grain size and complex mineral composition, various forms of wet magnetic separators have been developed, such as ring, cage and disc, most of which are still In the experimental stage. The medium magnetic field magnetic separator is mainly used for sorting locally oxidized ferromagnetic ore.
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