The high gradient magnetic separator is a new type of strong magnetic separator developed on the basis of the strong magnetic separator. It is characterized by a uniform magnetic field through the magnetization field of the entire working volume, which means that regardless of the processing capacity of the magnetic separator. Size, any particle in the working volume is subjected to the same force as the particles in any position, the magnetization field is uniformly passed through the working volume, the medium is uniformly magnetized, and the magnitude of the gradient is the same at any position in the magnetization space, but Compared with general magnetic separators, the magnetic field gradient is greatly improved, usually up to 107 Gauss/cm (for steel wool media), which is increased by 10 to 100 times, which provides a strong magnetic force for magnetic particles to overcome fluid resistance and Gravity, the fine-grained weak magnetic ore particles can be effectively recovered (the lower limit of the recovery fraction can be as low as 1 micron), the space occupied by the medium is greatly reduced, and the filling rate of the medium of the high gradient magnetic separator is only 5% to 12%. (Generally, the medium filling rate of the strong magnetic separator is 50% to 70%), thereby improving the utilization rate of the sorting area, the medium is light, the transmission load is light, and the processing amount is large. Because of these characteristics of the high gradient magnetic separator it has been used for separation of weakly magnetic minerals, non-metallic minerals iron and water treatment.
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