Electromagnetic iron separators are mainly categorized into three cooling types: self-cooled, oil-cooled, and forced-air cooled. An oil-cooled electromagnetic iron separator involves submerging the coil of the separator in transformer oil, where the oil's flow dissipates the heat generated by the coil. This cooling method requires careful consideration of the oil flow path and insulation sealing, resulting in a highly complex structure for the separator. A forced-air cooled electromagnetic iron separator uses a fan to expel the heat produced by the coil, necessitating a more complex installation. In contrast, for self-cooled electromagnetic iron separators, current technology reduces heat generation by decreasing the current density of the electromagnetic wire. However, since the coils are in a long-term operating state, even with reduced current, there is always a significant temperature rise within the coil, which affects the coil's lifespan and hinders the full potential of the separator's magnetic performance.
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