The utility model relates to the technical field of
coal dressing, in particular to a
magnetic separator tailing overflow self-circulation water replenishing device which comprises a
magnetic separator, a feeding port of the
magnetic separator is connected with a dilute medium
barrel through a feeding
pipe, a water pump is arranged on the feeding
pipe, a water inlet of the dilute medium
barrel is connected with a water replenishing pipeline, and an overflow
pipe of the magnetic separator is located above an opening of the dilute medium
barrel. An overflow pipe of the magnetic separator is connected with one end of a
backflow pipeline, the other end of the
backflow pipeline is located above the dilute medium barrel and close to an opening of the dilute medium barrel, and water overflowing from the overflow pipe of the magnetic separator flows into the dilute medium barrel through the
backflow pipeline under the action of gravity. According to the utility model, water overflowing from the overflow pipeline of the magnetic separator can automatically flow to the dilute medium barrel to be used as replenished water, so that the circulation of
water resources in the
coal dressing
system is realized, the use of external water is reduced, additional equipment is not needed, and unnecessary
power consumption is effectively reduced, energy is saved and consumption is reduced while the production process is stabilized.